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                "score": 25,
                "max": 25,
                "detail": "Duration 126 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b127m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 315m, avg 328m) for 126 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70892189999999999372448655776679515838623046875,
            "lon": 33.3214851999999979170752339996397495269775390625
        },
        "time_window": {
            "start_ts": "2026-03-09T11:06:56+00:00",
            "end_ts": "2026-03-09T13:12:54+00:00"
        },
        "searched_at": "2026-03-09T18:15:09.231617+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 315.19999999999998863131622783839702606201171875,
    "avg_distance_m": 325.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 22.89999999999999857891452847979962825775146484375,
    "duration_minutes": 161.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 9717,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.36999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.600000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-03-09T10:30:57+00:00",
        "end": "2026-03-09T13:12:54+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 326m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 162 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b123m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 315m, avg 326m) for 162 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7089213000000000874933903105556964874267578125,
            "lon": 33.3214751000000006797563401050865650177001953125
        },
        "time_window": {
            "start_ts": "2026-03-09T10:30:57+00:00",
            "end_ts": "2026-03-09T13:12:54+00:00"
        },
        "searched_at": "2026-03-09T17:00:06.496940+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 389.8999999999999772626324556767940521240234375,
    "points_in_zone": 101,
    "first_point": {
        "ts": "2026-03-09T10:57:57+00:00",
        "lat": 34.70959500000000019781509763561189174652099609375,
        "lon": 33.32299330000000026075213099829852581024169921875
    },
    "last_point": {
        "ts": "2026-03-09T17:27:52+00:00",
        "lat": 34.6875866999999971085344441235065460205078125,
        "lon": 33.33033499999999804686012794263660907745361328125
    }
}

{
    "radius_m": 1092.299999999999954525264911353588104248046875,
    "duration_minutes": 208,
    "points": 25,
    "centroid": {
        "lat": 34.7085505360000041719104046933352947235107421875,
        "lon": 33.32416191999999455219949595630168914794921875
    },
    "bbox": {
        "min_lat": 34.6996333000000021229425328783690929412841796875,
        "min_lon": 33.32295330000000177506080945022404193878173828125,
        "max_lat": 34.7097150000000027603164198808372020721435546875,
        "max_lon": 33.3292167000000034704498830251395702362060546875
    },
    "zone_id": "discovered_037"
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 392.8999999999999772626324556767940521240234375,
    "points_in_zone": 87,
    "first_point": {
        "ts": "2026-03-09T09:54:56+00:00",
        "lat": 34.70963830000000172049112734384834766387939453125,
        "lon": 33.32299330000000026075213099829852581024169921875
    },
    "last_point": {
        "ts": "2026-03-09T16:27:52+00:00",
        "lat": 34.68840329999999738674887339584529399871826171875,
        "lon": 33.330348299999997152553987689316272735595703125
    }
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 315.19999999999998863131622783839702606201171875,
    "avg_distance_m": 324.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 20.39999999999999857891452847979962825775146484375,
    "duration_minutes": 239.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 14397,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 1.600000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-09T09:12:57+00:00",
        "end": "2026-03-09T13:12:54+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 325m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 240 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b120m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 315m, avg 325m) for 240 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70892210000000233094397117383778095245361328125,
            "lon": 33.32147119999999773654053569771349430084228515625
        },
        "time_window": {
            "start_ts": "2026-03-09T09:12:57+00:00",
            "end_ts": "2026-03-09T13:12:54+00:00"
        },
        "searched_at": "2026-03-09T15:15:01.418797+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "radius_m": 1113.200000000000045474735088646411895751953125,
    "duration_minutes": 255.900000000000005684341886080801486968994140625,
    "points": 29,
    "centroid": {
        "lat": 34.70869637931034645816907868720591068267822265625,
        "lon": 33.3240005620689743182083475403487682342529296875
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    "bbox": {
        "min_lat": 34.6996333000000021229425328783690929412841796875,
        "min_lon": 33.32295330000000177506080945022404193878173828125,
        "max_lat": 34.7097150000000027603164198808372020721435546875,
        "max_lon": 33.3292167000000034704498830251395702362060546875
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    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 315.19999999999998863131622783839702606201171875,
    "avg_distance_m": 324.5,
    "distance_consistency_m": 20,
    "duration_minutes": 287.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 17276,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.320000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 1.600000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-09T08:24:58+00:00",
        "end": "2026-03-09T13:12:54+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 288 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b120m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 315m, avg 324m) for 288 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.708921500000002424712874926626682281494140625,
            "lon": 33.32147119999999773654053569771349430084228515625
        },
        "time_window": {
            "start_ts": "2026-03-09T08:24:58+00:00",
            "end_ts": "2026-03-09T13:12:54+00:00"
        },
        "searched_at": "2026-03-09T15:00:09.317969+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 392.8999999999999772626324556767940521240234375,
    "points_in_zone": 61,
    "first_point": {
        "ts": "2026-03-09T08:24:58+00:00",
        "lat": 34.70958830000000006066329660825431346893310546875,
        "lon": 33.3230166999999966037648846395313739776611328125
    },
    "last_point": {
        "ts": "2026-03-09T14:57:53+00:00",
        "lat": 34.68828669999999902984200161881744861602783203125,
        "lon": 33.33039999999999736246536485850811004638671875
    }
}

{
    "radius_m": 1121.40000000000009094947017729282379150390625,
    "duration_minutes": 328,
    "points": 31,
    "centroid": {
        "lat": 34.7087535483870937014216906391084194183349609375,
        "lon": 33.32393665483871103560886695049703121185302734375
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    "bbox": {
        "min_lat": 34.6996333000000021229425328783690929412841796875,
        "min_lon": 33.32295330000000177506080945022404193878173828125,
        "max_lat": 34.7097150000000027603164198808372020721435546875,
        "max_lon": 33.3292167000000034704498830251395702362060546875
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    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 315.19999999999998863131622783839702606201171875,
    "avg_distance_m": 323.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 17.39999999999999857891452847979962825775146484375,
    "duration_minutes": 354,
    "overlap_duration_s": 21238,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.2800000000000000266453525910037569701671600341796875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 1.600000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-03-09T07:18:56+00:00",
        "end": "2026-03-09T13:12:54+00:00"
    },
    "points_count": {
        "vessel_a": 33,
        "vessel_b": 33
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 354 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 315m, avg 324m) for 354 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7089145999999999503415892831981182098388671875,
            "lon": 33.32146709999999956153260427527129650115966796875
        },
        "time_window": {
            "start_ts": "2026-03-09T07:18:56+00:00",
            "end_ts": "2026-03-09T13:12:54+00:00"
        },
        "searched_at": "2026-03-09T14:00:04.476188+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 392.8999999999999772626324556767940521240234375,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-03-09T07:54:57+00:00",
        "lat": 34.70958329999999847359504201449453830718994140625,
        "lon": 33.32300500000000198497218661941587924957275390625
    },
    "last_point": {
        "ts": "2026-03-09T14:27:52+00:00",
        "lat": 34.68829329999999799838406033813953399658203125,
        "lon": 33.330201700000003484092303551733493804931640625
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}

{
    "radius_m": 1146.299999999999954525264911353588104248046875,
    "duration_minutes": 388,
    "points": 39,
    "centroid": {
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    "bbox": {
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        "max_lat": 34.7097150000000027603164198808372020721435546875,
        "max_lon": 33.3292167000000034704498830251395702362060546875
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    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 315.19999999999998863131622783839702606201171875,
    "avg_distance_m": 323.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 16.60000000000000142108547152020037174224853515625,
    "duration_minutes": 390,
    "overlap_duration_s": 23400,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.270000000000000017763568394002504646778106689453125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 1.600000000000000088817841970012523233890533447265625
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-03-09T06:42:54+00:00",
        "end": "2026-03-09T13:12:54+00:00"
    },
    "points_count": {
        "vessel_a": 36,
        "vessel_b": 36
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 315m, avg 324m) for 390 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 394,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-03-09T06:54:54+00:00",
        "lat": 34.70960170000000033496689866296947002410888671875,
        "lon": 33.32300169999999894798747845925390720367431640625
    },
    "last_point": {
        "ts": "2026-03-09T13:28:54+00:00",
        "lat": 34.6996333000000021229425328783690929412841796875,
        "lon": 33.3292167000000034704498830251395702362060546875
    }
}

{
    "radius_m": 1148.700000000000045474735088646411895751953125,
    "duration_minutes": 394,
    "points": 40,
    "centroid": {
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        "lon": 33.32372465750000856132828630506992340087890625
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        "min_lat": 34.6996333000000021229425328783690929412841796875,
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    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 315.19999999999998863131622783839702606201171875,
    "avg_distance_m": 321.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 393,
    "overlap_duration_s": 23580,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-03-09T05:51:56+00:00",
        "end": "2026-03-09T12:24:56+00:00"
    },
    "points_count": {
        "vessel_a": 40,
        "vessel_b": 40
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 321m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 315m, avg 321m) for 393 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-03-09T05:51:56+00:00",
        "lat": 34.70958499999999702367858844809234142303466796875,
        "lon": 33.3229749999999995679900166578590869903564453125
    },
    "last_point": {
        "ts": "2026-03-09T12:24:56+00:00",
        "lat": 34.70959500000000019781509763561189174652099609375,
        "lon": 33.32298329999999708661562181077897548675537109375
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}

{
    "radius_m": 5.5999999999999996447286321199499070644378662109375,
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    "points": 40,
    "centroid": {
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        "lon": 33.322987740000002077067620120942592620849609375
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        "min_lat": 34.7095766999999995050529832951724529266357421875,
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    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
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        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.1000000000000227373675443232059478759765625,
    "avg_distance_m": 320.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 390,
    "overlap_duration_s": 23401,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-09T04:54:56+00:00",
        "end": "2026-03-09T11:24:57+00:00"
    },
    "points_count": {
        "vessel_a": 47,
        "vessel_b": 47
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 321m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 321m) for 390 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-03-09T04:54:56+00:00",
        "lat": 34.70958499999999702367858844809234142303466796875,
        "lon": 33.3229749999999995679900166578590869903564453125
    },
    "last_point": {
        "ts": "2026-03-09T11:24:57+00:00",
        "lat": 34.70960500000000337195160682313144207000732421875,
        "lon": 33.3229749999999995679900166578590869903564453125
    }
}

{
    "radius_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 390,
    "points": 47,
    "centroid": {
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        "min_lon": 33.32294999999999873807610129006206989288330078125,
        "max_lat": 34.70963830000000172049112734384834766387939453125,
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}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 56,
    "first_point": {
        "ts": "2026-03-09T03:30:56+00:00",
        "lat": 34.7095699999999993679011822678148746490478515625,
        "lon": 33.32299499999999881083567743189632892608642578125
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        "ts": "2026-03-09T10:00:56+00:00",
        "lat": 34.70961330000000089057721197605133056640625,
        "lon": 33.32299669999999736091922386549413204193115234375
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}

{
    "radius_m": 5,
    "duration_minutes": 390,
    "points": 56,
    "centroid": {
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        "lon": 33.3229864321428550510972854681313037872314453125
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        "min_lon": 33.32294999999999873807610129006206989288330078125,
        "max_lat": 34.70963830000000172049112734384834766387939453125,
        "max_lon": 33.3230233000000026777343009598553180694580078125
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}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.1000000000000227373675443232059478759765625,
    "avg_distance_m": 321.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 384,
    "overlap_duration_s": 23040,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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        "vessel_b": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-03-09T03:36:56+00:00",
        "end": "2026-03-09T10:00:56+00:00"
    },
    "points_count": {
        "vessel_a": 55,
        "vessel_b": 55
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 321m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 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: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 321m) for 384 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70890150000000318186721415258944034576416015625,
            "lon": 33.32144650000000041245584725402295589447021484375
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        "time_window": {
            "start_ts": "2026-03-09T03:06:56+00:00",
            "end_ts": "2026-03-09T10:00:56+00:00"
        },
        "searched_at": "2026-03-09T10:30:08.785407+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.5,
    "avg_distance_m": 321.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.5,
    "duration_minutes": 384,
    "overlap_duration_s": 23040,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-03-09T02:54:53+00:00",
        "end": "2026-03-09T09:18:53+00:00"
    },
    "points_count": {
        "vessel_a": 59,
        "vessel_b": 59
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 321m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 321m) for 384 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 61,
    "first_point": {
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{
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{
    "zone_id": "discovered_037",
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    "dwell_minutes": 393,
    "points_in_zone": 71,
    "first_point": {
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}

{
    "radius_m": 5.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 393,
    "points": 71,
    "centroid": {
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{
    "vessel_a": {
        "mmsi": 538012063,
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        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
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    "avg_distance_m": 321.19999999999998863131622783839702606201171875,
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-09T01:51:59+00:00",
        "end": "2026-03-09T08:24:58+00:00"
    },
    "points_count": {
        "vessel_a": 71,
        "vessel_b": 71
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 321m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 321m) for 393 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.5,
    "avg_distance_m": 321.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 390,
    "overlap_duration_s": 23398,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-09T00:54:56+00:00",
        "end": "2026-03-09T07:24:54+00:00"
    },
    "points_count": {
        "vessel_a": 77,
        "vessel_b": 77
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 321m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 321m) for 390 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 77,
    "first_point": {
        "ts": "2026-03-09T00:54:56+00:00",
        "lat": 34.7095766999999995050529832951724529266357421875,
        "lon": 33.32299330000000026075213099829852581024169921875
    },
    "last_point": {
        "ts": "2026-03-09T07:24:54+00:00",
        "lat": 34.70959330000000164773155120201408863067626953125,
        "lon": 33.32300330000000343488864018581807613372802734375
    }
}

{
    "radius_m": 5.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 390,
    "points": 77,
    "centroid": {
        "lat": 34.709591424675323878545896150171756744384765625,
        "lon": 33.3229861064935022341160220094025135040283203125
    },
    "bbox": {
        "min_lat": 34.70956670000000343634383170865476131439208984375,
        "min_lon": 33.32293829999999701385604566894471645355224609375,
        "max_lat": 34.70962829999999854635461815632879734039306640625,
        "max_lon": 33.3230233000000026777343009598553180694580078125
    },
    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.5,
    "avg_distance_m": 321.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 384,
    "overlap_duration_s": 23042,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-08T23:48:54+00:00",
        "end": "2026-03-09T06:12:56+00:00"
    },
    "points_count": {
        "vessel_a": 89,
        "vessel_b": 89
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 321m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 321m) for 384 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 384,
    "points_in_zone": 89,
    "first_point": {
        "ts": "2026-03-08T23:48:54+00:00",
        "lat": 34.7095733000000024048858904279768466949462890625,
        "lon": 33.32300169999999894798747845925390720367431640625
    },
    "last_point": {
        "ts": "2026-03-09T06:12:56+00:00",
        "lat": 34.7095867000000026791894924826920032501220703125,
        "lon": 33.3230233000000026777343009598553180694580078125
    }
}

{
    "radius_m": 8.699999999999999289457264239899814128875732421875,
    "duration_minutes": 384,
    "points": 89,
    "centroid": {
        "lat": 34.70959164269664398716486175544559955596923828125,
        "lon": 33.32298588202245781531019019894301891326904296875
    },
    "bbox": {
        "min_lat": 34.70956000000000329919203068129718303680419921875,
        "min_lon": 33.32293829999999701385604566894471645355224609375,
        "max_lat": 34.70966829999999703204593970440328121185302734375,
        "max_lon": 33.3230233000000026777343009598553180694580078125
    },
    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.30000000000001136868377216160297393798828125,
    "avg_distance_m": 321.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 396,
    "overlap_duration_s": 23760,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-08T22:51:56+00:00",
        "end": "2026-03-09T05:27:56+00:00"
    },
    "points_count": {
        "vessel_a": 92,
        "vessel_b": 92
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 321m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 396 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 321m) for 396 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 92,
    "first_point": {
        "ts": "2026-03-08T22:51:56+00:00",
        "lat": 34.70959500000000019781509763561189174652099609375,
        "lon": 33.3229783000000026049747248180210590362548828125
    },
    "last_point": {
        "ts": "2026-03-09T05:27:56+00:00",
        "lat": 34.70960170000000033496689866296947002410888671875,
        "lon": 33.32298829999999867368387640453875064849853515625
    }
}

{
    "radius_m": 8.699999999999999289457264239899814128875732421875,
    "duration_minutes": 396,
    "points": 92,
    "centroid": {
        "lat": 34.7095915695652337262799846939742565155029296875,
        "lon": 33.32298616304347405048247310332953929901123046875
    },
    "bbox": {
        "min_lat": 34.70956000000000329919203068129718303680419921875,
        "min_lon": 33.32293829999999701385604566894471645355224609375,
        "max_lat": 34.70966829999999703204593970440328121185302734375,
        "max_lon": 33.32301830000000109066604636609554290771484375
    },
    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.30000000000001136868377216160297393798828125,
    "avg_distance_m": 321.5,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 393,
    "overlap_duration_s": 23578,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-08T21:51:56+00:00",
        "end": "2026-03-09T04:24:54+00:00"
    },
    "points_count": {
        "vessel_a": 94,
        "vessel_b": 94
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 322m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 322m) for 393 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 94,
    "first_point": {
        "ts": "2026-03-08T21:51:56+00:00",
        "lat": 34.7095800000000025420376914553344249725341796875,
        "lon": 33.32299830000000184782038559205830097198486328125
    },
    "last_point": {
        "ts": "2026-03-09T04:24:54+00:00",
        "lat": 34.709571699999997917984728701412677764892578125,
        "lon": 33.3229850000000027421265258453786373138427734375
    }
}

{
    "radius_m": 8.699999999999999289457264239899814128875732421875,
    "duration_minutes": 393,
    "points": 94,
    "centroid": {
        "lat": 34.7095916946808529246482066810131072998046875,
        "lon": 33.3229867585106376282055862247943878173828125
    },
    "bbox": {
        "min_lat": 34.70956000000000329919203068129718303680419921875,
        "min_lon": 33.32293829999999701385604566894471645355224609375,
        "max_lat": 34.70966829999999703204593970440328121185302734375,
        "max_lon": 33.32301830000000109066604636609554290771484375
    },
    "zone_id": "discovered_037"
}

{
    "vessel_a": {
        "mmsi": 538012063,
        "imo": 9370719,
        "name": "NAVIGATOR",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636025818,
        "imo": 9459230,
        "name": "YUME",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.5,
    "avg_distance_m": 321.5,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23405,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-08T20:51:56+00:00",
        "end": "2026-03-09T03:22:01+00:00"
    },
    "points_count": {
        "vessel_a": 98,
        "vessel_b": 98
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 322m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIGATOR and YUME) maintained close proximity (min 318m, avg 322m) for 390 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 Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 98,
    "first_point": {
        "ts": "2026-03-08T20:51:56+00:00",
        "lat": 34.70959330000000164773155120201408863067626953125,
        "lon": 33.3229816999999997051418176852166652679443359375
    },
    "last_point": {
        "ts": "2026-03-09T03:22:01+00:00",
        "lat": 34.70960500000000337195160682313144207000732421875,
        "lon": 33.32299330000000026075213099829852581024169921875
    }
}