CHEONGHAE3HO

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 63.5,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-07-31T21:01:26+00:00",
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        "lon": 129.08229829999999083156581036746501922607421875
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 119.400000000000005684341886080801486968994140625,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-07-31T20:05:35+00:00",
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        "lon": 129.050153300000005174297257326543331146240234375
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}

{
    "radius_m": 1127,
    "duration_minutes": 112.7000000000000028421709430404007434844970703125,
    "points": 19,
    "centroid": {
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        "lon": 129.049998673684200412026257254183292388916015625
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    "bbox": {
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    "zone_id": "discovered_001"
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 181.099999999999994315658113919198513031005859375,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-07-31T19:03:54+00:00",
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        "lon": 129.050421699999986913098837248980998992919921875
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    "last_point": {
        "ts": "2026-07-31T22:04:57+00:00",
        "lat": 35.0237750000000005456968210637569427490234375,
        "lon": 129.08229829999999083156581036746501922607421875
    }
}

{
    "radius_m": 1141.700000000000045474735088646411895751953125,
    "duration_minutes": 174.400000000000005684341886080801486968994140625,
    "points": 28,
    "centroid": {
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        "lon": 129.05010838214292334669153206050395965576171875
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    "bbox": {
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    "zone_id": "discovered_001"
}

{
    "vessel_a": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440709700,
        "name": "MUSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 6.0999999999999996447286321199499070644378662109375,
    "avg_distance_m": 14.199999999999999289457264239899814128875732421875,
    "distance_consistency_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 35.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2141,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-31T18:05:33+00:00",
        "end": "2026-07-31T18:41:14+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 6m, avg 14m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (CHEONGHAE3HO and MUSUNG) maintained close proximity (min 6m, avg 14m) for 36 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 Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.0070742999999993116944096982479095458984375,
            "lon": 129.050440699999995786129147745668888092041015625
        },
        "time_window": {
            "start_ts": "2026-07-31T18:05:33+00:00",
            "end_ts": "2026-07-31T18:41:14+00:00"
        },
        "searched_at": "2026-08-01T00:45:02.170314+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 244.099999999999994315658113919198513031005859375,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-31T18:00:53+00:00",
        "lat": 35.00696500000000099817043519578874111175537109375,
        "lon": 129.050498299999986784314387477934360504150390625
    },
    "last_point": {
        "ts": "2026-07-31T22:04:57+00:00",
        "lat": 35.0237750000000005456968210637569427490234375,
        "lon": 129.08229829999999083156581036746501922607421875
    }
}

{
    "radius_m": 1147.700000000000045474735088646411895751953125,
    "duration_minutes": 237.400000000000005684341886080801486968994140625,
    "points": 40,
    "centroid": {
        "lat": 35.00771028999999856523572816513478755950927734375,
        "lon": 129.05022940750001225751475431025028228759765625
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    "bbox": {
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    "zone_id": "discovered_001"
}

{
    "vessel_a": {
        "mmsi": 440709700,
        "name": "MUSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 9.0999999999999996447286321199499070644378662109375,
    "avg_distance_m": 16.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 93.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 5601,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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        "vessel_b": {
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            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-31T17:08:06+00:00",
        "end": "2026-07-31T18:41:27+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 9m, avg 16m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 93 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (MUSUNG and CHEONGHAE3HO) maintained close proximity (min 9m, avg 16m) for 93 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 Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.00708900000000056706994655542075634002685546875,
            "lon": 129.05043649999998933708411641418933868408203125
        },
        "time_window": {
            "start_ts": "2026-07-31T17:05:34+00:00",
            "end_ts": "2026-07-31T18:41:27+00:00"
        },
        "searched_at": "2026-07-31T23:45:01.974423+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 299.3999999999999772626324556767940521240234375,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-31T17:05:34+00:00",
        "lat": 35.00751669999999649007804691791534423828125,
        "lon": 129.050514999999990095602697692811489105224609375
    },
    "last_point": {
        "ts": "2026-07-31T22:04:57+00:00",
        "lat": 35.0237750000000005456968210637569427490234375,
        "lon": 129.08229829999999083156581036746501922607421875
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}

{
    "radius_m": 1148,
    "duration_minutes": 292.69999999999998863131622783839702606201171875,
    "points": 42,
    "centroid": {
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    "zone_id": "discovered_001"
}

{
    "vessel_a": {
        "mmsi": 440709700,
        "name": "MUSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 6.79999999999999982236431605997495353221893310546875,
    "avg_distance_m": 14.5999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 144.5,
    "overlap_duration_s": 8669,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
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            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-31T16:16:58+00:00",
        "end": "2026-07-31T18:41:27+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 15m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 144 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (MUSUNG and CHEONGHAE3HO) maintained close proximity (min 7m, avg 15m) for 144 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 364.3999999999999772626324556767940521240234375,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-07-31T16:00:33+00:00",
        "lat": 35.00731329999999985602698870934545993804931640625,
        "lon": 129.050556699999987131377565674483776092529296875
    },
    "last_point": {
        "ts": "2026-07-31T22:04:57+00:00",
        "lat": 35.0237750000000005456968210637569427490234375,
        "lon": 129.08229829999999083156581036746501922607421875
    }
}

{
    "radius_m": 1147.5,
    "duration_minutes": 357.69999999999998863131622783839702606201171875,
    "points": 54,
    "centroid": {
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        "lon": 129.05031027407409283114247955381870269775390625
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    "bbox": {
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}

{
    "vessel_a": {
        "mmsi": 440709700,
        "name": "MUSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 6.79999999999999982236431605997495353221893310546875,
    "avg_distance_m": 15.9000000000000003552713678800500929355621337890625,
    "distance_consistency_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 217.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 13030,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
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            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
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    },
    "time_window": {
        "start": "2026-07-31T15:04:17+00:00",
        "end": "2026-07-31T18:41:27+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 16m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 217 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (MUSUNG and CHEONGHAE3HO) maintained close proximity (min 7m, avg 16m) for 217 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
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            "lon": 129.050449100000008684219210408627986907958984375
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        "time_window": {
            "start_ts": "2026-07-31T15:04:17+00:00",
            "end_ts": "2026-07-31T18:41:27+00:00"
        },
        "searched_at": "2026-07-31T21:30:07.098905+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 381.1000000000000227373675443232059478759765625,
    "points_in_zone": 59,
    "first_point": {
        "ts": "2026-07-31T15:43:52+00:00",
        "lat": 35.0075700000000011868905858136713504791259765625,
        "lon": 129.05050499999998692146618850529193878173828125
    },
    "last_point": {
        "ts": "2026-07-31T22:04:57+00:00",
        "lat": 35.0237750000000005456968210637569427490234375,
        "lon": 129.08229829999999083156581036746501922607421875
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}

{
    "radius_m": 1146.59999999999990905052982270717620849609375,
    "duration_minutes": 392.1000000000000227373675443232059478759765625,
    "points": 58,
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}

{
    "radius_m": 245.900000000000005684341886080801486968994140625,
    "duration_minutes": 398.6000000000000227373675443232059478759765625,
    "points": 53,
    "centroid": {
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{
    "vessel_a": {
        "mmsi": 440709700,
        "name": "MUSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 6.79999999999999982236431605997495353221893310546875,
    "avg_distance_m": 15.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 233.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 13984,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-31T14:48:23+00:00",
        "end": "2026-07-31T18:41:27+00:00"
    },
    "points_count": {
        "vessel_a": 45,
        "vessel_b": 45
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 16m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 233 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (MUSUNG and CHEONGHAE3HO) maintained close proximity (min 7m, avg 16m) for 233 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_001",
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    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-07-31T14:30:13+00:00",
        "lat": 35.00831670000000173104126588441431522369384765625,
        "lon": 129.052625000000006139089236967265605926513671875
    },
    "last_point": {
        "ts": "2026-07-31T21:08:48+00:00",
        "lat": 35.008724999999998317434801720082759857177734375,
        "lon": 129.04823329999999259598553180694580078125
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}

{
    "radius_m": 1142.90000000000009094947017729282379150390625,
    "duration_minutes": 392.80000000000001136868377216160297393798828125,
    "points": 51,
    "centroid": {
        "lat": 35.00734715686274967083591036498546600341796875,
        "lon": 129.05138251568627083543105982244014739990234375
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        "min_lat": 35.00690670000000181971699930727481842041015625,
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{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 392.80000000000001136868377216160297393798828125,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-07-31T13:52:58+00:00",
        "lat": 35.00956330000000349400579580105841159820556640625,
        "lon": 129.063610000000011268639354966580867767333984375
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    "last_point": {
        "ts": "2026-07-31T20:25:46+00:00",
        "lat": 35.0069850000000002410160959698259830474853515625,
        "lon": 129.0501117000000022017047740519046783447265625
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}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 67.7000000000000028421709430404007434844970703125,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-07-30T14:00:32+00:00",
        "lat": 35.02110499999999859710442251525819301605224609375,
        "lon": 129.050558300000005829133442603051662445068359375
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    "last_point": {
        "ts": "2026-07-30T15:08:12+00:00",
        "lat": 35.02894500000000022055246517993509769439697265625,
        "lon": 129.0665533000000095853465609252452850341796875
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}

{
    "vessel_a": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440136380,
        "imo": 9929211,
        "name": "KUK DONG 1 HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 39.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 47.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 5.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 36.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2181,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
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            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-30T13:24:11+00:00",
        "end": "2026-07-30T14:00:32+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 40m, avg 48m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (CHEONGHAE3HO and KUK DONG 1 HO) maintained close proximity (min 40m, avg 48m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 123.7999999999999971578290569595992565155029296875,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-07-30T13:04:21+00:00",
        "lat": 35.02110669999999714718796894885599613189697265625,
        "lon": 129.05061169999999037827365100383758544921875
    },
    "last_point": {
        "ts": "2026-07-30T15:08:12+00:00",
        "lat": 35.02894500000000022055246517993509769439697265625,
        "lon": 129.0665533000000095853465609252452850341796875
    }
}

{
    "radius_m": 110.5,
    "duration_minutes": 118.599999999999994315658113919198513031005859375,
    "points": 23,
    "centroid": {
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        "lon": 129.050723991304352011866285465657711029052734375
    },
    "bbox": {
        "min_lat": 35.020994999999999208739609457552433013916015625,
        "min_lon": 129.050558300000005829133442603051662445068359375,
        "max_lat": 35.02152670000000256322891800664365291595458984375,
        "max_lon": 129.051844999999985930116963572800159454345703125
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    "zone_id": "discovered_001"
}

{
    "vessel_a": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440136380,
        "imo": 9929211,
        "name": "KUK DONG 1 HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 20.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 42.5,
    "distance_consistency_m": 8.800000000000000710542735760100185871124267578125,
    "duration_minutes": 115.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 6942,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-30T12:04:50+00:00",
        "end": "2026-07-30T14:00:32+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 20m, avg 42m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 116 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CHEONGHAE3HO and KUK DONG 1 HO) maintained close proximity (min 20m, avg 42m) for 116 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.02094170000000161735442816279828548431396484375,
            "lon": 129.050647800000007237031240947544574737548828125
        },
        "time_window": {
            "start_ts": "2026-07-30T12:04:50+00:00",
            "end_ts": "2026-07-30T14:00:32+00:00"
        },
        "searched_at": "2026-07-30T18:45:06.420436+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 186.69999999999998863131622783839702606201171875,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-07-30T12:01:31+00:00",
        "lat": 35.02178500000000127556631923653185367584228515625,
        "lon": 129.04920329999998784842318855226039886474609375
    },
    "last_point": {
        "ts": "2026-07-30T15:08:12+00:00",
        "lat": 35.02894500000000022055246517993509769439697265625,
        "lon": 129.0665533000000095853465609252452850341796875
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}

{
    "radius_m": 145.30000000000001136868377216160297393798828125,
    "duration_minutes": 181.400000000000005684341886080801486968994140625,
    "points": 37,
    "centroid": {
        "lat": 35.02117193783784188099161838181316852569580078125,
        "lon": 129.050610724324315015110187232494354248046875
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        "max_lat": 35.02178500000000127556631923653185367584228515625,
        "max_lon": 129.051844999999985930116963572800159454345703125
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}

{
    "vessel_a": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440136380,
        "imo": 9929211,
        "name": "KUK DONG 1 HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 20.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 50.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 39,
    "duration_minutes": 179.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 10792,
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    "speed_b_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.270000000000000017763568394002504646778106689453125,
            "max_sog": 2
        },
        "vessel_b": {
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            "max_sog": 0.299999999999999988897769753748434595763683319091796875
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    },
    "time_window": {
        "start": "2026-07-30T11:00:40+00:00",
        "end": "2026-07-30T14:00:32+00:00"
    },
    "points_count": {
        "vessel_a": 36,
        "vessel_b": 36
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 89,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 20m, avg 50m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 180 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b139m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CHEONGHAE3HO and KUK DONG 1 HO) maintained close proximity (min 20m, avg 50m) for 180 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
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            "lon": 129.04985210000000961372279562056064605712890625
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        "time_window": {
            "start_ts": "2026-07-30T11:00:40+00:00",
            "end_ts": "2026-07-30T14:00:32+00:00"
        },
        "searched_at": "2026-07-30T17:45:06.783301+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 247.5,
    "points_in_zone": 48,
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        "lat": 35.0201167000000026519046514295041561126708984375,
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    "last_point": {
        "ts": "2026-07-30T15:08:12+00:00",
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        "lon": 129.0665533000000095853465609252452850341796875
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}

{
    "radius_m": 258.6000000000000227373675443232059478759765625,
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    "points": 47,
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{
    "vessel_a": {
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        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440136380,
        "imo": 9929211,
        "name": "KUK DONG 1 HO",
        "flag": "REPUBLIC OF KOREA"
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    "avg_distance_m": 67.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 85.7000000000000028421709430404007434844970703125,
    "duration_minutes": 195.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 11740,
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    "speed_a_std": 0.5,
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    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
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    "time_window": {
        "start": "2026-07-30T10:44:52+00:00",
        "end": "2026-07-30T14:00:32+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 20m, avg 68m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 196 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b186m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CHEONGHAE3HO and KUK DONG 1 HO) maintained close proximity (min 20m, avg 68m) for 196 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 306.19999999999998863131622783839702606201171875,
    "points_in_zone": 62,
    "first_point": {
        "ts": "2026-07-30T10:02:00+00:00",
        "lat": 35.01879670000000288609953713603317737579345703125,
        "lon": 129.054703299999999899227987043559551239013671875
    },
    "last_point": {
        "ts": "2026-07-30T15:08:12+00:00",
        "lat": 35.02894500000000022055246517993509769439697265625,
        "lon": 129.0665533000000095853465609252452850341796875
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}

{
    "radius_m": 534.3999999999999772626324556767940521240234375,
    "duration_minutes": 301,
    "points": 61,
    "centroid": {
        "lat": 35.0209233344262287346282391808927059173583984375,
        "lon": 129.051168281967193252057768404483795166015625
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    "bbox": {
        "min_lat": 35.01864830000000239351720665581524372100830078125,
        "min_lon": 129.047216700000006994741852395236492156982421875,
        "max_lat": 35.02182830000000279824234894476830959320068359375,
        "max_lon": 129.056958299999990913420333527028560638427734375
    },
    "zone_id": "discovered_001"
}

{
    "radius_m": 1323,
    "duration_minutes": 352.30000000000001136868377216160297393798828125,
    "points": 72,
    "centroid": {
        "lat": 35.0208180555555372848175466060638427734375,
        "lon": 129.051671252777765630526118911802768707275390625
    },
    "bbox": {
        "min_lat": 35.01671329999999926485543255694210529327392578125,
        "min_lon": 129.047216700000006994741852395236492156982421875,
        "max_lat": 35.02823000000000064346750150434672832489013671875,
        "max_lon": 129.063028300000013359749573282897472381591796875
    },
    "zone_id": "discovered_001"
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 357.6000000000000227373675443232059478759765625,
    "points_in_zone": 73,
    "first_point": {
        "ts": "2026-07-30T09:10:39+00:00",
        "lat": 35.02823000000000064346750150434672832489013671875,
        "lon": 129.063028300000013359749573282897472381591796875
    },
    "last_point": {
        "ts": "2026-07-30T15:08:12+00:00",
        "lat": 35.02894500000000022055246517993509769439697265625,
        "lon": 129.0665533000000095853465609252452850341796875
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}

{
    "gap_minutes": 303,
    "last_seen": {
        "ts": "2026-07-30T02:36:47+00:00",
        "lat": 35.25531000000000148020262713544070720672607421875,
        "lon": 129.30847829999999021310941316187381744384765625,
        "sog": 11.0999999999999996447286321199499070644378662109375,
        "zone_id": "discovered_002"
    },
    "next_seen": {
        "ts": "2026-07-30T07:39:49+00:00",
        "lat": 35.2268100000000004001776687800884246826171875,
        "lon": 129.2803900000000112413545139133930206298828125,
        "zone_ids": [
            "discovered_002"
        ]
    },
    "gap_enrichment": {
        "status": "not_found",
        "corridor": {
            "start": {
                "lat": 35.25531000000000148020262713544070720672607421875,
                "lon": 129.30847829999999021310941316187381744384765625,
                "ts": "2026-07-30T02:36:47+00:00"
            },
            "end": {
                "lat": 35.2268100000000004001776687800884246826171875,
                "lon": 129.2803900000000112413545139133930206298828125,
                "ts": "2026-07-30T07:39:49+00:00"
            },
            "bbox": {
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                "min_lon": 129.05977899999999181090970523655414581298828125,
                "max_lat": 35.4354900000000014870238373987376689910888671875,
                "max_lon": 129.52908999999999650754034519195556640625
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "not_found",
            "notes": "No Sentinel-1 scenes covering corridor and time window"
        },
        "viirs": {
            "status": "not_found",
            "notes": "No VIIRS thermal\/light detections in corridor"
        },
        "searched_at": "2026-07-30T07:45:08.440039+00:00"
    }
}

{
    "zone_id": "discovered_002",
    "zone_name": "Archipelago Sea Sanction Zone",
    "dwell_minutes": 343.80000000000001136868377216160297393798828125,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-07-30T02:12:24+00:00",
        "lat": 35.1940316999999964764356263913214206695556640625,
        "lon": 129.259645000000006120899342931807041168212890625
    },
    "last_point": {
        "ts": "2026-07-30T07:56:09+00:00",
        "lat": 35.18506000000000000227373675443232059478759765625,
        "lon": 129.24783999999999650754034519195556640625
    }
}

{
    "vessel_a": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440130480,
        "name": "STELLA HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 39.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 44.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 5.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 60.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3650,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-07-29T12:08:45+00:00",
        "end": "2026-07-29T13:09:35+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 40m, avg 45m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 61 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CHEONGHAE3HO and STELLA HO) maintained close proximity (min 40m, avg 45m) for 61 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.0099579999999974688762449659407138824462890625,
            "lon": 129.049744400000008681672625243663787841796875
        },
        "time_window": {
            "start_ts": "2026-07-29T12:08:45+00:00",
            "end_ts": "2026-07-29T13:09:35+00:00"
        },
        "searched_at": "2026-07-29T18:45:01.261578+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 106.400000000000005684341886080801486968994140625,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-07-29T12:01:24+00:00",
        "lat": 35.00981829999999916935848887078464031219482421875,
        "lon": 129.04982169999999541687429882586002349853515625
    },
    "last_point": {
        "ts": "2026-07-29T13:47:46+00:00",
        "lat": 35.02550500000000255340637522749602794647216796875,
        "lon": 129.0788049999999884676071815192699432373046875
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}

{
    "radius_m": 955.299999999999954525264911353588104248046875,
    "duration_minutes": 100.7000000000000028421709430404007434844970703125,
    "points": 23,
    "centroid": {
        "lat": 35.01058369565217986973948427475988864898681640625,
        "lon": 129.050216230434756425893283449113368988037109375
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    "bbox": {
        "min_lat": 35.00981829999999916935848887078464031219482421875,
        "min_lon": 129.04928830000000061772880144417285919189453125,
        "max_lat": 35.0156266999999985500835464335978031158447265625,
        "max_lon": 129.05869999999998753992258571088314056396484375
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}

{
    "vessel_a": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440130480,
        "name": "STELLA HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 9.5,
    "avg_distance_m": 42.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 10.800000000000000710542735760100185871124267578125,
    "duration_minutes": 119.5,
    "overlap_duration_s": 7171,
    "speed_a_avg": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_a_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2099999999999999922284388276239042170345783233642578125,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        },
        "vessel_b": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-29T11:10:04+00:00",
        "end": "2026-07-29T13:09:35+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 43m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 120 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CHEONGHAE3HO and STELLA HO) maintained close proximity (min 10m, avg 43m) for 120 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.009967799999998305793269537389278411865234375,
            "lon": 129.048978199999993421442923136055469512939453125
        },
        "time_window": {
            "start_ts": "2026-07-29T11:10:04+00:00",
            "end_ts": "2026-07-29T13:09:35+00:00"
        },
        "searched_at": "2026-07-29T17:45:02.034975+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 157.69999999999998863131622783839702606201171875,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-29T11:10:04+00:00",
        "lat": 35.00898670000000123536665341816842555999755859375,
        "lon": 129.0460567000000082771293818950653076171875
    },
    "last_point": {
        "ts": "2026-07-29T13:47:46+00:00",
        "lat": 35.02550500000000255340637522749602794647216796875,
        "lon": 129.0788049999999884676071815192699432373046875
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}

{
    "radius_m": 1033,
    "duration_minutes": 152,
    "points": 37,
    "centroid": {
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        "lon": 129.049353918918910721913562156260013580322265625
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        "max_lat": 35.0156266999999985500835464335978031158447265625,
        "max_lon": 129.05869999999998753992258571088314056396484375
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}

{
    "vessel_a": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440130480,
        "name": "STELLA HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 9.5,
    "avg_distance_m": 43.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 9.800000000000000710542735760100185871124267578125,
    "duration_minutes": 171.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 10311,
    "speed_a_avg": 0.200000000000000011102230246251565404236316680908203125,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
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        "vessel_b": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-29T10:17:44+00:00",
        "end": "2026-07-29T13:09:35+00:00"
    },
    "points_count": {
        "vessel_a": 40,
        "vessel_b": 40
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 43m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 172 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CHEONGHAE3HO and STELLA HO) maintained close proximity (min 10m, avg 43m) for 172 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_001",
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    "first_point": {
        "ts": "2026-07-29T10:06:43+00:00",
        "lat": 35.00780670000000327490852214395999908447265625,
        "lon": 129.045423300000010158328223042190074920654296875
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    "last_point": {
        "ts": "2026-07-29T13:47:46+00:00",
        "lat": 35.02550500000000255340637522749602794647216796875,
        "lon": 129.0788049999999884676071815192699432373046875
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}

{
    "radius_m": 1139.299999999999954525264911353588104248046875,
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    "points": 49,
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}

{
    "vessel_a": {
        "mmsi": 440308690,
        "name": "CHEONGHAE3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440114920,
        "name": "NO.7 HAEGU",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 39.5,
    "avg_distance_m": 55.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 9.300000000000000710542735760100185871124267578125,
    "duration_minutes": 87,
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    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-07-29T09:14:43+00:00",
        "end": "2026-07-29T10:41:45+00:00"
    },
    "points_count": {
        "vessel_a": 22,
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