AIS Events

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 406,
    "avg_distance_m": 407.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 57,
    "overlap_duration_s": 3421,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T03:37:54+00:00",
        "end": "2026-07-19T04:34:55+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 406m, avg 408m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 57 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 406m, avg 408m) for 57 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 406.80000000000001136868377216160297393798828125,
    "avg_distance_m": 408.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 0.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 168.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 10132,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T00:38:33+00:00",
        "end": "2026-07-19T03:27:25+00:00"
    },
    "points_count": {
        "vessel_a": 39,
        "vessel_b": 39
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 407m, avg 408m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 169 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 407m, avg 408m) for 169 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 28.39999999999999857891452847979962825775146484375,
    "duration_minutes": 96,
    "points": 11,
    "centroid": {
        "lat": 46.53699863636364142394086229614913463592529296875,
        "lon": 142.933983036363628116305335424840450286865234375
    },
    "bbox": {
        "min_lat": 46.53689829999999716392267146147787570953369140625,
        "min_lon": 142.9337199999999938881956040859222412109375,
        "max_lat": 46.53716670000000021900632418692111968994140625,
        "max_lon": 142.934261700000007522248779423534870147705078125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 96,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-07-18T23:06:53+00:00",
        "lat": 46.5369299999999981309883878566324710845947265625,
        "lon": 142.93392499999998790372046642005443572998046875
    },
    "last_point": {
        "ts": "2026-07-19T00:42:53+00:00",
        "lat": 46.53716670000000021900632418692111968994140625,
        "lon": 142.934261700000007522248779423534870147705078125
    }
}

{
    "radius_m": 54,
    "duration_minutes": 393,
    "points": 39,
    "centroid": {
        "lat": 46.6240923025641080812420113943517208099365234375,
        "lon": 142.466207694871854982920922338962554931640625
    },
    "bbox": {
        "min_lat": 46.623733299999997825580067001283168792724609375,
        "min_lon": 142.46573330000001078587956726551055908203125,
        "max_lat": 46.62434999999999973852027324028313159942626953125,
        "max_lon": 142.466383299999989731077221222221851348876953125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 393,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-18T22:32:57+00:00",
        "lat": 46.62389999999999901092451182194054126739501953125,
        "lon": 142.466266700000005585025064647197723388671875
    },
    "last_point": {
        "ts": "2026-07-19T05:05:59+00:00",
        "lat": 46.623733299999997825580067001283168792724609375,
        "lon": 142.46573330000001078587956726551055908203125
    }
}

{
    "radius_m": 93,
    "duration_minutes": 378,
    "points": 21,
    "centroid": {
        "lat": 46.36970858095238412488470203243196010589599609375,
        "lon": 142.639501661904745333231403492391109466552734375
    },
    "bbox": {
        "min_lat": 46.3690916999999984682290232740342617034912109375,
        "min_lon": 142.6386850000000094951246865093708038330078125,
        "max_lat": 46.369941699999998263592715375125408172607421875,
        "max_lon": 142.640078299999998989733285270631313323974609375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 378,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-18T22:36:50+00:00",
        "lat": 46.3690916999999984682290232740342617034912109375,
        "lon": 142.6386850000000094951246865093708038330078125
    },
    "last_point": {
        "ts": "2026-07-19T04:54:51+00:00",
        "lat": 46.3697599999999994224708643741905689239501953125,
        "lon": 142.639666699999992260927683673799037933349609375
    }
}

{
    "radius_m": 42.60000000000000142108547152020037174224853515625,
    "duration_minutes": 396.8999999999999772626324556767940521240234375,
    "points": 103,
    "centroid": {
        "lat": 46.64963246213591929745234665460884571075439453125,
        "lon": 142.720439727184469802523381076753139495849609375
    },
    "bbox": {
        "min_lat": 46.649321700000001555963535793125629425048828125,
        "min_lon": 142.72010829999999259598553180694580078125,
        "max_lat": 46.6498466999999976678736857138574123382568359375,
        "max_lon": 142.72084169999999403444235213100910186767578125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 396.8999999999999772626324556767940521240234375,
    "points_in_zone": 103,
    "first_point": {
        "ts": "2026-07-18T22:31:20+00:00",
        "lat": 46.649321700000001555963535793125629425048828125,
        "lon": 142.720113300000008393908501602709293365478515625
    },
    "last_point": {
        "ts": "2026-07-19T05:08:12+00:00",
        "lat": 46.64978169999999835226844879798591136932373046875,
        "lon": 142.72064000000000305590219795703887939453125
    }
}

{
    "radius_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 386,
    "points": 45,
    "centroid": {
        "lat": 46.6278366022222172659894567914307117462158203125,
        "lon": 142.75623388222220455645583570003509521484375
    },
    "bbox": {
        "min_lat": 46.62781499999999823558027856051921844482421875,
        "min_lon": 142.756184999999987894625519402325153350830078125,
        "max_lat": 46.62785999999999830833985470235347747802734375,
        "max_lon": 142.756274999999988040144671685993671417236328125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 386,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-18T22:41:09+00:00",
        "lat": 46.62785670000000237678250414319336414337158203125,
        "lon": 142.75627170000001342486939392983913421630859375
    },
    "last_point": {
        "ts": "2026-07-19T05:07:10+00:00",
        "lat": 46.62784669999999920264599495567381381988525390625,
        "lon": 142.75618670000000065556378103792667388916015625
    }
}

{
    "radius_m": 36.10000000000000142108547152020037174224853515625,
    "duration_minutes": 396,
    "points": 49,
    "centroid": {
        "lat": 46.6651342877550945331677212379872798919677734375,
        "lon": 142.660246361224523070632130838930606842041015625
    },
    "bbox": {
        "min_lat": 46.66486669999999747915353509597480297088623046875,
        "min_lon": 142.6598966999999902327544987201690673828125,
        "max_lat": 46.665441700000002356318873353302478790283203125,
        "max_lon": 142.660564999999991186996339820325374603271484375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 396,
    "points_in_zone": 49,
    "first_point": {
        "ts": "2026-07-18T22:31:13+00:00",
        "lat": 46.66494999999999748752088635228574275970458984375,
        "lon": 142.660371700000013106546248309314250946044921875
    },
    "last_point": {
        "ts": "2026-07-19T05:07:13+00:00",
        "lat": 46.665424999999999045030563138425350189208984375,
        "lon": 142.660224999999996953192749060690402984619140625
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 406.6000000000000227373675443232059478759765625,
    "avg_distance_m": 408.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 381,
    "overlap_duration_s": 22861,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-18T22:16:42+00:00",
        "end": "2026-07-19T04:37:43+00:00"
    },
    "points_count": {
        "vessel_a": 33,
        "vessel_b": 33
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 407m, avg 408m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 381 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and AZOV) maintained close proximity (min 407m, avg 408m) for 381 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 393,
    "points": 35,
    "centroid": {
        "lat": 46.6251650428571480233586044050753116607666015625,
        "lon": 142.76614628857140587570029310882091522216796875
    },
    "bbox": {
        "min_lat": 46.62515830000000249810909735970199108123779296875,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.6251749999999987039700499735772609710693359375,
        "max_lon": 142.766153300000013359749573282897472381591796875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 393,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-07-18T22:04:42+00:00",
        "lat": 46.62516500000000263526089838705956935882568359375,
        "lon": 142.766151699999994661993696354329586029052734375
    },
    "last_point": {
        "ts": "2026-07-19T04:37:43+00:00",
        "lat": 46.62516169999999959827619022689759731292724609375,
        "lon": 142.76614499999999452484189532697200775146484375
    }
}

{
    "radius_m": 84.400000000000005684341886080801486968994140625,
    "duration_minutes": 398.1000000000000227373675443232059478759765625,
    "points": 54,
    "centroid": {
        "lat": 46.39751845185184464526173542253673076629638671875,
        "lon": 142.694045362962953049645875580608844757080078125
    },
    "bbox": {
        "min_lat": 46.3971250000000026147972675971686840057373046875,
        "min_lon": 142.6934400000000096042640507221221923828125,
        "max_lat": 46.39793829999999985602698870934545993804931640625,
        "max_lon": 142.694960000000008903953130356967449188232421875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 398.1000000000000227373675443232059478759765625,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-18T22:30:51+00:00",
        "lat": 46.3971982999999994490281096659600734710693359375,
        "lon": 142.6936233000000129322870634496212005615234375
    },
    "last_point": {
        "ts": "2026-07-19T05:08:59+00:00",
        "lat": 46.39782170000000149912011693231761455535888671875,
        "lon": 142.694768299999992677840054966509342193603515625
    }
}

{
    "radius_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 396.19999999999998863131622783839702606201171875,
    "points": 93,
    "centroid": {
        "lat": 46.62193206774193043884224607609212398529052734375,
        "lon": 142.768673741935316456874716095626354217529296875
    },
    "bbox": {
        "min_lat": 46.62191500000000132786226458847522735595703125,
        "min_lon": 142.768648299999995288089849054813385009765625,
        "max_lat": 46.6219516999999967765688779763877391815185546875,
        "max_lon": 142.768691700000005084802978672087192535400390625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 396.19999999999998863131622783839702606201171875,
    "points_in_zone": 93,
    "first_point": {
        "ts": "2026-07-18T22:30:32+00:00",
        "lat": 46.62192329999999884648786974139511585235595703125,
        "lon": 142.768675000000001773514668457210063934326171875
    },
    "last_point": {
        "ts": "2026-07-19T05:06:46+00:00",
        "lat": 46.62193169999999753372321720235049724578857421875,
        "lon": 142.76866830000000163636286742985248565673828125
    }
}

{
    "radius_m": 77.2999999999999971578290569595992565155029296875,
    "duration_minutes": 390,
    "points": 23,
    "centroid": {
        "lat": 46.3731315304347759820302599109709262847900390625,
        "lon": 142.718177108695641663871356286108493804931640625
    },
    "bbox": {
        "min_lat": 46.37261670000000179925336851738393306732177734375,
        "min_lon": 142.71749829999998837593011558055877685546875,
        "max_lat": 46.37353499999999684177964809350669384002685546875,
        "max_lon": 142.71899500000000671207089908421039581298828125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-07-18T22:20:31+00:00",
        "lat": 46.37261670000000179925336851738393306732177734375,
        "lon": 142.717540000000013833414413966238498687744140625
    },
    "last_point": {
        "ts": "2026-07-19T04:50:32+00:00",
        "lat": 46.37353499999999684177964809350669384002685546875,
        "lon": 142.71899500000000671207089908421039581298828125
    }
}

{
    "radius_m": 111.7999999999999971578290569595992565155029296875,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 47,
    "centroid": {
        "lat": 46.39551936382978425399414845742285251617431640625,
        "lon": 142.7459151808510569026111625134944915771484375
    },
    "bbox": {
        "min_lat": 46.39506329999999678648237022571265697479248046875,
        "min_lon": 142.7450367000000142070348374545574188232421875,
        "max_lat": 46.3960067000000009329596650786697864532470703125,
        "max_lon": 142.74718669999998610364855267107486724853515625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-07-18T22:31:12+00:00",
        "lat": 46.39507830000000154768713400699198246002197265625,
        "lon": 142.745366700000005266701919026672840118408203125
    },
    "last_point": {
        "ts": "2026-07-19T05:01:16+00:00",
        "lat": 46.3960067000000009329596650786697864532470703125,
        "lon": 142.74718669999998610364855267107486724853515625
    }
}

{
    "radius_m": 96.400000000000005684341886080801486968994140625,
    "duration_minutes": 390,
    "points": 49,
    "centroid": {
        "lat": 46.395445444897944753392948769032955169677734375,
        "lon": 142.745805753061205223275464959442615509033203125
    },
    "bbox": {
        "min_lat": 46.39486500000000290810930891893804073333740234375,
        "min_lon": 142.7450367000000142070348374545574188232421875,
        "max_lat": 46.3959033000000005131369107402861118316650390625,
        "max_lon": 142.7469399999999950523488223552703857421875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 49,
    "first_point": {
        "ts": "2026-07-18T21:46:12+00:00",
        "lat": 46.395111700000001064836396835744380950927734375,
        "lon": 142.74539329999998926723492331802845001220703125
    },
    "last_point": {
        "ts": "2026-07-19T04:16:14+00:00",
        "lat": 46.395814999999998917701304890215396881103515625,
        "lon": 142.7469399999999950523488223552703857421875
    }
}

{
    "radius_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 396,
    "points": 37,
    "centroid": {
        "lat": 46.62516521891891585482881055213510990142822265625,
        "lon": 142.76614626486485803980031050741672515869140625
    },
    "bbox": {
        "min_lat": 46.62515830000000249810909735970199108123779296875,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.6251749999999987039700499735772609710693359375,
        "max_lon": 142.766153300000013359749573282897472381591796875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 396,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-18T21:43:40+00:00",
        "lat": 46.62516329999999697974999435245990753173828125,
        "lon": 142.76614499999999452484189532697200775146484375
    },
    "last_point": {
        "ts": "2026-07-19T04:19:41+00:00",
        "lat": 46.62516169999999959827619022689759731292724609375,
        "lon": 142.766146700000007285780156962573528289794921875
    }
}

{
    "radius_m": 94.7000000000000028421709430404007434844970703125,
    "duration_minutes": 381,
    "points": 30,
    "centroid": {
        "lat": 46.3729667266666609748426708392798900604248046875,
        "lon": 142.717993006666659994152723811566829681396484375
    },
    "bbox": {
        "min_lat": 46.3722350000000034242475521750748157501220703125,
        "min_lon": 142.717363299999988157651387155055999755859375,
        "max_lat": 46.3733466999999990321157383732497692108154296875,
        "max_lon": 142.7186633000000028914655558764934539794921875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 381,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-07-18T21:08:30+00:00",
        "lat": 46.3723932999999988169292919337749481201171875,
        "lon": 142.71746669999998857747414149343967437744140625
    },
    "last_point": {
        "ts": "2026-07-19T03:29:32+00:00",
        "lat": 46.3733466999999990321157383732497692108154296875,
        "lon": 142.7186633000000028914655558764934539794921875
    }
}

{
    "radius_m": 45,
    "duration_minutes": 393.6000000000000227373675443232059478759765625,
    "points": 100,
    "centroid": {
        "lat": 46.6495898520000338294266839511692523956298828125,
        "lon": 142.720388017000033187287044711410999298095703125
    },
    "bbox": {
        "min_lat": 46.64927999999999741476131021045148372650146484375,
        "min_lon": 142.72007999999999583451426587998867034912109375,
        "max_lat": 46.6498466999999976678736857138574123382568359375,
        "max_lon": 142.72084169999999403444235213100910186767578125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 393.6000000000000227373675443232059478759765625,
    "points_in_zone": 100,
    "first_point": {
        "ts": "2026-07-18T21:51:39+00:00",
        "lat": 46.6493200000000030058799893595278263092041015625,
        "lon": 142.720118299999995770122040994465351104736328125
    },
    "last_point": {
        "ts": "2026-07-19T04:25:12+00:00",
        "lat": 46.64979670000000311347321257926523685455322265625,
        "lon": 142.72070669999999381616362370550632476806640625
    }
}

{
    "radius_m": 80,
    "duration_minutes": 386.1000000000000227373675443232059478759765625,
    "points": 54,
    "centroid": {
        "lat": 46.397447435185171116245328448712825775146484375,
        "lon": 142.6939111037037264395621605217456817626953125
    },
    "bbox": {
        "min_lat": 46.39700500000000005229594535194337368011474609375,
        "min_lon": 142.693311700000009523137123323976993560791015625,
        "max_lat": 46.397868299999998953353497199714183807373046875,
        "max_lon": 142.69475499999998646671883761882781982421875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 386.1000000000000227373675443232059478759765625,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-18T21:54:54+00:00",
        "lat": 46.39700500000000005229594535194337368011474609375,
        "lon": 142.693311700000009523137123323976993560791015625
    },
    "last_point": {
        "ts": "2026-07-19T04:21:01+00:00",
        "lat": 46.397868299999998953353497199714183807373046875,
        "lon": 142.69475499999998646671883761882781982421875
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 102.5,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-18T21:02:36+00:00",
        "lat": 46.52884329999999835081325727514922618865966796875,
        "lon": 142.72250170000000935033312998712062835693359375
    },
    "last_point": {
        "ts": "2026-07-18T22:45:06+00:00",
        "lat": 46.67722830000000300287865684367716312408447265625,
        "lon": 142.632891699999987622504704631865024566650390625
    }
}

{
    "radius_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 390,
    "points": 43,
    "centroid": {
        "lat": 46.6278365999999806490450282581150531768798828125,
        "lon": 142.7562409627906845344114117324352264404296875
    },
    "bbox": {
        "min_lat": 46.62781499999999823558027856051921844482421875,
        "min_lon": 142.75619829999999410574673675000667572021484375,
        "max_lat": 46.62785999999999830833985470235347747802734375,
        "max_lon": 142.75627670000000080108293332159519195556640625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-18T21:47:10+00:00",
        "lat": 46.62784169999999761557774036191403865814208984375,
        "lon": 142.75625669999999445280991494655609130859375
    },
    "last_point": {
        "ts": "2026-07-19T04:17:09+00:00",
        "lat": 46.62784169999999761557774036191403865814208984375,
        "lon": 142.756201699999991205913829617202281951904296875
    }
}

{
    "radius_m": 2.5,
    "duration_minutes": 395.3999999999999772626324556767940521240234375,
    "points": 95,
    "centroid": {
        "lat": 46.6219314978947494410022045485675334930419921875,
        "lon": 142.76867503368401912666740827262401580810546875
    },
    "bbox": {
        "min_lat": 46.62191169999999829087755642831325531005859375,
        "min_lon": 142.768648299999995288089849054813385009765625,
        "max_lat": 46.6219516999999967765688779763877391815185546875,
        "max_lon": 142.768695000000008121787686832249164581298828125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 395.3999999999999772626324556767940521240234375,
    "points_in_zone": 95,
    "first_point": {
        "ts": "2026-07-18T21:52:22+00:00",
        "lat": 46.62191169999999829087755642831325531005859375,
        "lon": 142.768691700000005084802978672087192535400390625
    },
    "last_point": {
        "ts": "2026-07-19T04:27:44+00:00",
        "lat": 46.6219449999999966394170769490301609039306640625,
        "lon": 142.76866000000001122316461987793445587158203125
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 405.69999999999998863131622783839702606201171875,
    "avg_distance_m": 408.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 377,
    "overlap_duration_s": 22620,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-18T21:29:42+00:00",
        "end": "2026-07-19T03:46:42+00:00"
    },
    "points_count": {
        "vessel_a": 35,
        "vessel_b": 35
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 406m, avg 409m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 377 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and AZOV) maintained close proximity (min 406m, avg 409m) for 377 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 42.7000000000000028421709430404007434844970703125,
    "duration_minutes": 390.19999999999998863131622783839702606201171875,
    "points": 45,
    "centroid": {
        "lat": 46.66507159555555261931658606044948101043701171875,
        "lon": 142.660300406666721073634107597172260284423828125
    },
    "bbox": {
        "min_lat": 46.66486669999999747915353509597480297088623046875,
        "min_lon": 142.660020000000002937667886726558208465576171875,
        "max_lat": 46.66540330000000125210135593079030513763427734375,
        "max_lon": 142.660564999999991186996339820325374603271484375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390.19999999999998863131622783839702606201171875,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-18T21:43:04+00:00",
        "lat": 46.6649400000000014188117347657680511474609375,
        "lon": 142.66037330000000338259269483387470245361328125
    },
    "last_point": {
        "ts": "2026-07-19T04:13:14+00:00",
        "lat": 46.66540330000000125210135593079030513763427734375,
        "lon": 142.660020000000002937667886726558208465576171875
    }
}

{
    "radius_m": 84.5,
    "duration_minutes": 396,
    "points": 21,
    "centroid": {
        "lat": 46.3696533428571484591884654946625232696533203125,
        "lon": 142.639424599999983911402523517608642578125
    },
    "bbox": {
        "min_lat": 46.3690916999999984682290232740342617034912109375,
        "min_lon": 142.6386850000000094951246865093708038330078125,
        "max_lat": 46.369941699999998263592715375125408172607421875,
        "max_lon": 142.640078299999998989733285270631313323974609375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 396,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-18T21:42:49+00:00",
        "lat": 46.36916000000000082081896835006773471832275390625,
        "lon": 142.638959999999997307895682752132415771484375
    },
    "last_point": {
        "ts": "2026-07-19T04:18:50+00:00",
        "lat": 46.3699117000000029520379030145704746246337890625,
        "lon": 142.639890000000008285496733151376247406005859375
    }
}

{
    "radius_m": 105,
    "duration_minutes": 390,
    "points": 21,
    "centroid": {
        "lat": 46.369449371428572703734971582889556884765625,
        "lon": 142.63917119047619053162634372711181640625
    },
    "bbox": {
        "min_lat": 46.3686500000000023646862246096134185791015625,
        "min_lon": 142.63844499999999015926732681691646575927734375,
        "max_lat": 46.36979000000000183945303433574736118316650390625,
        "max_lon": 142.63966329999999516076059080660343170166015625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-18T20:48:50+00:00",
        "lat": 46.3686500000000023646862246096134185791015625,
        "lon": 142.63844499999999015926732681691646575927734375
    },
    "last_point": {
        "ts": "2026-07-19T03:18:50+00:00",
        "lat": 46.36969330000000155678208102472126483917236328125,
        "lon": 142.6395033000000012179953046143054962158203125
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 405.69999999999998863131622783839702606201171875,
    "avg_distance_m": 408.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 382,
    "overlap_duration_s": 22919,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-18T20:14:43+00:00",
        "end": "2026-07-19T02:36:42+00:00"
    },
    "points_count": {
        "vessel_a": 39,
        "vessel_b": 39
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 406m, avg 409m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 382 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and AZOV) maintained close proximity (min 406m, avg 409m) for 382 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 379,
    "points": 38,
    "centroid": {
        "lat": 46.6251648631578774484296445734798908233642578125,
        "lon": 142.766146013157907646018429659307003021240234375
    },
    "bbox": {
        "min_lat": 46.62515669999999801120793563313782215118408203125,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.6251749999999987039700499735772609710693359375,
        "max_lon": 142.766153300000013359749573282897472381591796875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 379,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-07-18T20:59:42+00:00",
        "lat": 46.62516000000000104819264379329979419708251953125,
        "lon": 142.766146700000007285780156962573528289794921875
    },
    "last_point": {
        "ts": "2026-07-19T03:18:42+00:00",
        "lat": 46.62516670000000118534444482065737247467041015625,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "radius_m": 118.7999999999999971578290569595992565155029296875,
    "duration_minutes": 386.1000000000000227373675443232059478759765625,
    "points": 61,
    "centroid": {
        "lat": 46.3973189311475238127968623302876949310302734375,
        "lon": 142.693773191803273903133231215178966522216796875
    },
    "bbox": {
        "min_lat": 46.3964433000000013862518244422972202301025390625,
        "min_lon": 142.692886700000002520027919672429561614990234375,
        "max_lat": 46.39763169999999803394530317746102809906005859375,
        "max_lon": 142.694236700000004702815203927457332611083984375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 386.1000000000000227373675443232059478759765625,
    "points_in_zone": 61,
    "first_point": {
        "ts": "2026-07-18T20:51:52+00:00",
        "lat": 46.3964433000000013862518244422972202301025390625,
        "lon": 142.692886700000002520027919672429561614990234375
    },
    "last_point": {
        "ts": "2026-07-19T03:18:01+00:00",
        "lat": 46.3975683000000032052412279881536960601806640625,
        "lon": 142.694150000000007594280759803950786590576171875
    }
}

{
    "radius_m": 63.60000000000000142108547152020037174224853515625,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 48,
    "centroid": {
        "lat": 46.66504382291666530591101036407053470611572265625,
        "lon": 142.66042451250001477092155255377292633056640625
    },
    "bbox": {
        "min_lat": 46.66486669999999747915353509597480297088623046875,
        "min_lon": 142.660113300000006120171747170388698577880859375,
        "max_lat": 46.6652332999999970297722029499709606170654296875,
        "max_lon": 142.6612499999999954525264911353588104248046875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-07-18T20:52:06+00:00",
        "lat": 46.6649799999999999045030563138425350189208984375,
        "lon": 142.6612499999999954525264911353588104248046875
    },
    "last_point": {
        "ts": "2026-07-19T03:22:12+00:00",
        "lat": 46.66517999999999943838702165521681308746337890625,
        "lon": 142.660318300000000135696609504520893096923828125
    }
}

{
    "radius_m": 3,
    "duration_minutes": 382,
    "points": 41,
    "centroid": {
        "lat": 46.62783899268291776252226554788649082183837890625,
        "lon": 142.756245929268260397293488495051860809326171875
    },
    "bbox": {
        "min_lat": 46.62781499999999823558027856051921844482421875,
        "min_lon": 142.7562149999999974170350469648838043212890625,
        "max_lat": 46.62785999999999830833985470235347747802734375,
        "max_lon": 142.75627670000000080108293332159519195556640625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 382,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-07-18T20:48:10+00:00",
        "lat": 46.62784669999999920264599495567381381988525390625,
        "lon": 142.75622670000001335210981778800487518310546875
    },
    "last_point": {
        "ts": "2026-07-19T03:10:11+00:00",
        "lat": 46.6278317000000015468685887753963470458984375,
        "lon": 142.756225000000000591171556152403354644775390625
    }
}

{
    "radius_m": 64.2999999999999971578290569595992565155029296875,
    "duration_minutes": 279.19999999999998863131622783839702606201171875,
    "points": 13,
    "centroid": {
        "lat": 46.5369965384615369430321152321994304656982421875,
        "lon": 142.93406808461537593757384456694126129150390625
    },
    "bbox": {
        "min_lat": 46.53689829999999716392267146147787570953369140625,
        "min_lon": 142.9337199999999938881956040859222412109375,
        "max_lat": 46.53716670000000021900632418692111968994140625,
        "max_lon": 142.934895000000011577867553569376468658447265625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 279.19999999999998863131622783839702606201171875,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-07-18T20:03:39+00:00",
        "lat": 46.53690000000000281943357549607753753662109375,
        "lon": 142.934895000000011577867553569376468658447265625
    },
    "last_point": {
        "ts": "2026-07-19T00:42:53+00:00",
        "lat": 46.53716670000000021900632418692111968994140625,
        "lon": 142.934261700000007522248779423534870147705078125
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 162,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-18T20:03:05+00:00",
        "lat": 46.38115169999999665151335648261010646820068359375,
        "lon": 142.867223300000006247501005418598651885986328125
    },
    "last_point": {
        "ts": "2026-07-18T22:45:06+00:00",
        "lat": 46.67722830000000300287865684367716312408447265625,
        "lon": 142.632891699999987622504704631865024566650390625
    }
}

{
    "radius_m": 86.2999999999999971578290569595992565155029296875,
    "duration_minutes": 387,
    "points": 28,
    "centroid": {
        "lat": 46.3729091107142750161074218340218067169189453125,
        "lon": 142.717920185714291392287123017013072967529296875
    },
    "bbox": {
        "min_lat": 46.3722350000000034242475521750748157501220703125,
        "min_lon": 142.717363299999988157651387155055999755859375,
        "max_lat": 46.373296699999997372287907637655735015869140625,
        "max_lon": 142.71836669999999003266566433012485504150390625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 387,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-07-18T20:44:32+00:00",
        "lat": 46.3723116999999973586454871110618114471435546875,
        "lon": 142.71745670000001382504706270992755889892578125
    },
    "last_point": {
        "ts": "2026-07-19T03:11:31+00:00",
        "lat": 46.3731666999999987410774338059127330780029296875,
        "lon": 142.71836669999999003266566433012485504150390625
    }
}

{
    "radius_m": 3.5,
    "duration_minutes": 392.6000000000000227373675443232059478759765625,
    "points": 92,
    "centroid": {
        "lat": 46.62193000434783840546515421010553836822509765625,
        "lon": 142.768676504347666877947631292045116424560546875
    },
    "bbox": {
        "min_lat": 46.6218999999999965666575008071959018707275390625,
        "min_lon": 142.768648299999995288089849054813385009765625,
        "max_lat": 46.62195669999999836363713257014751434326171875,
        "max_lon": 142.768695000000008121787686832249164581298828125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 392.6000000000000227373675443232059478759765625,
    "points_in_zone": 92,
    "first_point": {
        "ts": "2026-07-18T20:54:51+00:00",
        "lat": 46.62191500000000132786226458847522735595703125,
        "lon": 142.76866999999998597559169866144657135009765625
    },
    "last_point": {
        "ts": "2026-07-19T03:27:25+00:00",
        "lat": 46.62193669999999912079147179611027240753173828125,
        "lon": 142.768671699999998736529960297048091888427734375
    }
}

{
    "radius_m": 127.900000000000005684341886080801486968994140625,
    "duration_minutes": 390,
    "points": 44,
    "centroid": {
        "lat": 46.39533674318181510898284614086151123046875,
        "lon": 142.745661861363629441257216967642307281494140625
    },
    "bbox": {
        "min_lat": 46.3943833000000012134478311054408550262451171875,
        "min_lon": 142.7447316999999884501448832452297210693359375,
        "max_lat": 46.3959033000000005131369107402861118316650390625,
        "max_lon": 142.746478300000006811387720517814159393310546875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-07-18T20:58:11+00:00",
        "lat": 46.3943833000000012134478311054408550262451171875,
        "lon": 142.7447316999999884501448832452297210693359375
    },
    "last_point": {
        "ts": "2026-07-19T03:28:12+00:00",
        "lat": 46.39550669999999854553607292473316192626953125,
        "lon": 142.74560999999999921783455647528171539306640625
    }
}

{
    "radius_m": 52.89999999999999857891452847979962825775146484375,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 101,
    "centroid": {
        "lat": 46.6495225079208211127479444257915019989013671875,
        "lon": 142.72029136831685036668204702436923980712890625
    },
    "bbox": {
        "min_lat": 46.6490916999999996050974004901945590972900390625,
        "min_lon": 142.71981329999999843494151718914508819580078125,
        "max_lat": 46.64981499999999670080796931870281696319580078125,
        "max_lon": 142.720603299999993396340869367122650146484375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 101,
    "first_point": {
        "ts": "2026-07-18T20:53:22+00:00",
        "lat": 46.6490916999999996050974004901945590972900390625,
        "lon": 142.71999829999998610219336114823818206787109375
    },
    "last_point": {
        "ts": "2026-07-19T03:23:31+00:00",
        "lat": 46.64973330000000117934177978895604610443115234375,
        "lon": 142.720603299999993396340869367122650146484375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 175.099999999999994315658113919198513031005859375,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-07-18T19:50:03+00:00",
        "lat": 46.3438282999999984212990966625511646270751953125,
        "lon": 142.889088299999997389022610150277614593505859375
    },
    "last_point": {
        "ts": "2026-07-18T22:45:06+00:00",
        "lat": 46.67722830000000300287865684367716312408447265625,
        "lon": 142.632891699999987622504704631865024566650390625
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 405.3999999999999772626324556767940521240234375,
    "avg_distance_m": 408.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 271.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 16272,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-18T19:45:31+00:00",
        "end": "2026-07-19T00:16:43+00:00"
    },
    "points_count": {
        "vessel_a": 60,
        "vessel_b": 60
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 405m, avg 409m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 271 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 405m, avg 409m) for 271 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 99.2999999999999971578290569595992565155029296875,
    "duration_minutes": 390,
    "points": 46,
    "centroid": {
        "lat": 46.66502746521737066132118343375623226165771484375,
        "lon": 142.660523550000021941741579212248325347900390625
    },
    "bbox": {
        "min_lat": 46.66486669999999747915353509597480297088623046875,
        "min_lon": 142.660126700000006394475349225103855133056640625,
        "max_lat": 46.6652332999999970297722029499709606170654296875,
        "max_lon": 142.66181000000000267391442321240901947021484375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 46,
    "first_point": {
        "ts": "2026-07-18T19:55:11+00:00",
        "lat": 46.664929999999998244675225578248500823974609375,
        "lon": 142.661685000000005629772203974425792694091796875
    },
    "last_point": {
        "ts": "2026-07-19T02:25:09+00:00",
        "lat": 46.6651183000000031597664928995072841644287109375,
        "lon": 142.660165000000006330083124339580535888671875
    }
}

{
    "radius_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 391,
    "points": 40,
    "centroid": {
        "lat": 46.62516390999999060795744298957288265228271484375,
        "lon": 142.766145002500024929759092628955841064453125
    },
    "bbox": {
        "min_lat": 46.62515669999999801120793563313782215118408203125,
        "min_lon": 142.76613670000000411164364777505397796630859375,
        "max_lat": 46.6251749999999987039700499735772609710693359375,
        "max_lon": 142.766151699999994661993696354329586029052734375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 391,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-18T19:53:41+00:00",
        "lat": 46.62516000000000104819264379329979419708251953125,
        "lon": 142.76613670000000411164364777505397796630859375
    },
    "last_point": {
        "ts": "2026-07-19T02:24:42+00:00",
        "lat": 46.62516169999999959827619022689759731292724609375,
        "lon": 142.766150000000010322764865122735500335693359375
    }
}

{
    "radius_m": 80.2999999999999971578290569595992565155029296875,
    "duration_minutes": 390,
    "points": 28,
    "centroid": {
        "lat": 46.37267124999999623469193466007709503173828125,
        "lon": 142.71773809285713241479243151843547821044921875
    },
    "bbox": {
        "min_lat": 46.3720167000000031976014724932610988616943359375,
        "min_lon": 142.717295000000007121343514882028102874755859375,
        "max_lat": 46.37323330000000254358383244834840297698974609375,
        "max_lon": 142.71827830000000858490238897502422332763671875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-07-18T19:08:28+00:00",
        "lat": 46.3722800000000034970071283169090747833251953125,
        "lon": 142.71737830000000712971086613833904266357421875
    },
    "last_point": {
        "ts": "2026-07-19T01:38:29+00:00",
        "lat": 46.37322669999999646961441612802445888519287109375,
        "lon": 142.71818500000000540239852853119373321533203125
    }
}

{
    "radius_m": 146.5,
    "duration_minutes": 389.1000000000000227373675443232059478759765625,
    "points": 66,
    "centroid": {
        "lat": 46.39712661212120536902148160152137279510498046875,
        "lon": 142.693596230302972571735153906047344207763671875
    },
    "bbox": {
        "min_lat": 46.39597499999999996589394868351519107818603515625,
        "min_lon": 142.692665000000005193214747123420238494873046875,
        "max_lat": 46.39763169999999803394530317746102809906005859375,
        "max_lon": 142.694236700000004702815203927457332611083984375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 389.1000000000000227373675443232059478759765625,
    "points_in_zone": 66,
    "first_point": {
        "ts": "2026-07-18T19:51:52+00:00",
        "lat": 46.3960383000000007314156391657888889312744140625,
        "lon": 142.692711699999989605203154496848583221435546875
    },
    "last_point": {
        "ts": "2026-07-19T02:21:00+00:00",
        "lat": 46.39747330000000147265382111072540283203125,
        "lon": 142.69386170000001357038854621350765228271484375
    }
}

{
    "radius_m": 3.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 397,
    "points": 39,
    "centroid": {
        "lat": 46.62784231794871203646835056133568286895751953125,
        "lon": 142.756247346153855914963060058653354644775390625
    },
    "bbox": {
        "min_lat": 46.627821699999998372732079587876796722412109375,
        "min_lon": 142.7562183000000004540197551250457763671875,
        "max_lat": 46.6278649999999998954081092961132526397705078125,
        "max_lon": 142.75627670000000080108293332159519195556640625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 397,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-18T19:51:08+00:00",
        "lat": 46.62785999999999830833985470235347747802734375,
        "lon": 142.75623170000000072832335717976093292236328125
    },
    "last_point": {
        "ts": "2026-07-19T02:28:10+00:00",
        "lat": 46.6278266999999999598003341816365718841552734375,
        "lon": 142.75623500000000376530806533992290496826171875
    }
}

{
    "radius_m": 70.7999999999999971578290569595992565155029296875,
    "duration_minutes": 394.69999999999998863131622783839702606201171875,
    "points": 101,
    "centroid": {
        "lat": 46.6494176405940805807404103688895702362060546875,
        "lon": 142.72033126831689742175512947142124176025390625
    },
    "bbox": {
        "min_lat": 46.64884829999999737992766313254833221435546875,
        "min_lon": 142.71981329999999843494151718914508819580078125,
        "max_lat": 46.64981499999999670080796931870281696319580078125,
        "max_lon": 142.720830000000006521077011711895465850830078125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 394.69999999999998863131622783839702606201171875,
    "points_in_zone": 101,
    "first_point": {
        "ts": "2026-07-18T19:51:42+00:00",
        "lat": 46.64887499999999675992512493394315242767333984375,
        "lon": 142.7207300000000032014213502407073974609375
    },
    "last_point": {
        "ts": "2026-07-19T02:26:22+00:00",
        "lat": 46.6496532999999971025317790918052196502685546875,
        "lon": 142.720416699999987031333148479461669921875
    }
}

{
    "radius_m": 140.5,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 42,
    "centroid": {
        "lat": 46.3951190880952282213911530561745166778564453125,
        "lon": 142.74547818095237516899942420423030853271484375
    },
    "bbox": {
        "min_lat": 46.39399999999999835154085303656756877899169921875,
        "min_lon": 142.7445950000000038926373235881328582763671875,
        "max_lat": 46.39583999999999974761522025801241397857666015625,
        "max_lon": 142.74632170000000996878952719271183013916015625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-07-18T19:52:17+00:00",
        "lat": 46.39407330000000229119905270636081695556640625,
        "lon": 142.74470999999999776264303363859653472900390625
    },
    "last_point": {
        "ts": "2026-07-19T02:28:13+00:00",
        "lat": 46.39539669999999915717125986702740192413330078125,
        "lon": 142.74569669999999632636900059878826141357421875
    }
}

{
    "radius_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 399.1000000000000227373675443232059478759765625,
    "points": 91,
    "centroid": {
        "lat": 46.62192807802199467914761044085025787353515625,
        "lon": 142.768676375824071556053240783512592315673828125
    },
    "bbox": {
        "min_lat": 46.6218999999999965666575008071959018707275390625,
        "min_lon": 142.768646700000005012043402530252933502197265625,
        "max_lat": 46.62195669999999836363713257014751434326171875,
        "max_lon": 142.768695000000008121787686832249164581298828125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 399.1000000000000227373675443232059478759765625,
    "points_in_zone": 91,
    "first_point": {
        "ts": "2026-07-18T19:50:51+00:00",
        "lat": 46.621908300000001190710463561117649078369140625,
        "lon": 142.76866000000001122316461987793445587158203125
    },
    "last_point": {
        "ts": "2026-07-19T02:29:55+00:00",
        "lat": 46.62193669999999912079147179611027240753173828125,
        "lon": 142.768666700000011360316420905292034149169921875
    }
}

{
    "radius_m": 87.400000000000005684341886080801486968994140625,
    "duration_minutes": 390,
    "points": 17,
    "centroid": {
        "lat": 46.369196870588240244615008123219013214111328125,
        "lon": 142.638911764705909490658086724579334259033203125
    },
    "bbox": {
        "min_lat": 46.368508300000002009255695156753063201904296875,
        "min_lon": 142.638373300000012022792361676692962646484375,
        "max_lat": 46.36979000000000183945303433574736118316650390625,
        "max_lon": 142.63965669999998908679117448627948760986328125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-07-18T19:00:50+00:00",
        "lat": 46.368508300000002009255695156753063201904296875,
        "lon": 142.638373300000012022792361676692962646484375
    },
    "last_point": {
        "ts": "2026-07-19T01:30:51+00:00",
        "lat": 46.36979000000000183945303433574736118316650390625,
        "lon": 142.63965669999998908679117448627948760986328125
    }
}

{
    "radius_m": 80.099999999999994315658113919198513031005859375,
    "duration_minutes": 390,
    "points": 49,
    "centroid": {
        "lat": 46.6649867367347042090841569006443023681640625,
        "lon": 142.660768912244890316287637688219547271728515625
    },
    "bbox": {
        "min_lat": 46.66483670000000216759872273541986942291259765625,
        "min_lon": 142.660126700000006394475349225103855133056640625,
        "max_lat": 46.6652332999999970297722029499709606170654296875,
        "max_lon": 142.66181000000000267391442321240901947021484375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 49,
    "first_point": {
        "ts": "2026-07-18T18:58:09+00:00",
        "lat": 46.66487500000000210320649784989655017852783203125,
        "lon": 142.661799999999999499777914024889469146728515625
    },
    "last_point": {
        "ts": "2026-07-19T01:28:11+00:00",
        "lat": 46.6651250000000032969182939268648624420166015625,
        "lon": 142.660293300000006411210051737725734710693359375
    }
}

{
    "radius_m": 59.89999999999999857891452847979962825775146484375,
    "duration_minutes": 387.19999999999998863131622783839702606201171875,
    "points": 16,
    "centroid": {
        "lat": 46.5370451000000002750311978161334991455078125,
        "lon": 142.934221156250004014509613625705242156982421875
    },
    "bbox": {
        "min_lat": 46.53689829999999716392267146147787570953369140625,
        "min_lon": 142.9337199999999938881956040859222412109375,
        "max_lat": 46.53731330000000099289536592550575733184814453125,
        "max_lon": 142.934966699999989714342518709599971771240234375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 387.19999999999998863131622783839702606201171875,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-07-18T18:15:39+00:00",
        "lat": 46.53731330000000099289536592550575733184814453125,
        "lon": 142.934844999999995707185007631778717041015625
    },
    "last_point": {
        "ts": "2026-07-19T00:42:53+00:00",
        "lat": 46.53716670000000021900632418692111968994140625,
        "lon": 142.934261700000007522248779423534870147705078125
    }
}

{
    "radius_m": 84.599999999999994315658113919198513031005859375,
    "duration_minutes": 387.1000000000000227373675443232059478759765625,
    "points": 29,
    "centroid": {
        "lat": 46.37260666551725307726883329451084136962890625,
        "lon": 142.7176956862068664122489280998706817626953125
    },
    "bbox": {
        "min_lat": 46.3719066999999967038093018345534801483154296875,
        "min_lon": 142.7172633000000132597051560878753662109375,
        "max_lat": 46.37323330000000254358383244834840297698974609375,
        "max_lon": 142.71827830000000858490238897502422332763671875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 387.1000000000000227373675443232059478759765625,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-07-18T18:47:30+00:00",
        "lat": 46.3719066999999967038093018345534801483154296875,
        "lon": 142.7172633000000132597051560878753662109375
    },
    "last_point": {
        "ts": "2026-07-19T01:14:33+00:00",
        "lat": 46.3731666999999987410774338059127330780029296875,
        "lon": 142.718074999999998908606357872486114501953125
    }
}

{
    "radius_m": 85.599999999999994315658113919198513031005859375,
    "duration_minutes": 384,
    "points": 17,
    "centroid": {
        "lat": 46.36911608823529462597434758208692073822021484375,
        "lon": 142.638836076470596481158281676471233367919921875
    },
    "bbox": {
        "min_lat": 46.3684166999999973768353811465203762054443359375,
        "min_lon": 142.6383700000000089858076535165309906005859375,
        "max_lat": 46.36969669999999865694917389191687107086181640625,
        "max_lon": 142.639440000000007557900971733033657073974609375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 384,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-07-18T18:54:50+00:00",
        "lat": 46.3684166999999973768353811465203762054443359375,
        "lon": 142.6383700000000089858076535165309906005859375
    },
    "last_point": {
        "ts": "2026-07-19T01:18:50+00:00",
        "lat": 46.36959829999999982419467414729297161102294921875,
        "lon": 142.63915670000000091022229753434658050537109375
    }
}

{
    "radius_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 392,
    "points": 41,
    "centroid": {
        "lat": 46.62516377317073335007080459035933017730712890625,
        "lon": 142.7661448024390438149566762149333953857421875
    },
    "bbox": {
        "min_lat": 46.62515669999999801120793563313782215118408203125,
        "min_lon": 142.76613670000000411164364777505397796630859375,
        "max_lat": 46.6251749999999987039700499735772609710693359375,
        "max_lon": 142.766151699999994661993696354329586029052734375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 392,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-07-18T18:53:41+00:00",
        "lat": 46.62516670000000118534444482065737247467041015625,
        "lon": 142.76614169999999148785718716681003570556640625
    },
    "last_point": {
        "ts": "2026-07-19T01:25:41+00:00",
        "lat": 46.62516670000000118534444482065737247467041015625,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "radius_m": 69.099999999999994315658113919198513031005859375,
    "duration_minutes": 394.1000000000000227373675443232059478759765625,
    "points": 103,
    "centroid": {
        "lat": 46.6493027339805763631375157274305820465087890625,
        "lon": 142.720379882524326831116923131048679351806640625
    },
    "bbox": {
        "min_lat": 46.64873330000000350992195308208465576171875,
        "min_lon": 142.71981329999999843494151718914508819580078125,
        "max_lat": 46.64981499999999670080796931870281696319580078125,
        "max_lon": 142.720830000000006521077011711895465850830078125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 394.1000000000000227373675443232059478759765625,
    "points_in_zone": 103,
    "first_point": {
        "ts": "2026-07-18T18:52:22+00:00",
        "lat": 46.648948300000000699583324603736400604248046875,
        "lon": 142.72073829999999361461959779262542724609375
    },
    "last_point": {
        "ts": "2026-07-19T01:26:31+00:00",
        "lat": 46.64960500000000109821485239081084728240966796875,
        "lon": 142.720471699999990278229233808815479278564453125
    }
}

{
    "radius_m": 163.5,
    "duration_minutes": 390,
    "points": 44,
    "centroid": {
        "lat": 46.39489352045453784967321553267538547515869140625,
        "lon": 142.745353336363649532358977012336254119873046875
    },
    "bbox": {
        "min_lat": 46.393491699999998445491655729711055755615234375,
        "min_lon": 142.7445950000000038926373235881328582763671875,
        "max_lat": 46.39583999999999974761522025801241397857666015625,
        "max_lon": 142.74632170000000996878952719271183013916015625
    },
    "zone_id": "russia_prigorodnoye"
}