{
 "generated_utc": "2026-08-07T11:27:35Z",
 "gfs_cycle_utc": "2026-08-07T06:00:00Z",
 "model": {
  "source": "NCEP GFS 0.50 degree",
  "vertical_coordinate": "constant density (isopycnic)",
  "horizon_hours": 497.5,
  "output_interval_min": 30,
  "integration_step_s": 900,
  "wind_field_interval_h": 3
 },
 "staleness": {
  "fresh_seed_max_h": 24.0,
  "served_until_h": 336.0,
  "track_max_age_h": 72.0,
  "region_spread_deg": 60.0,
  "note": "A trajectory is served for 336 h after the last real fix and then the flight disappears. That matches the archive's own bridging limit: 23% of flights go quiet for over a week and are then heard again, so a shorter window drops balloons that are still flying. Past dead_reckoned flights the balloon has not been heard from since seed_time, so its present position is a prediction too -- the silent period is reconstructed from GFS analyses of weather that has already happened, which is why wind_source distinguishes analysis from forecast. Use display_as, not seed_age_h, to decide how to draw a flight: 'track' means the members still agree and a line is meaningful, 'region' means draw the member envelope instead because the nominal member is no better than any other."
 },
 "members": {
  "offsets_m": [
   -2000,
   -1500,
   -1000,
   -500,
   0,
   500,
   1000,
   1500,
   2000
  ],
  "nominal_offset_m": 0,
  "note": "Each member is seeded at the last observed altitude plus its offset and then conserves the density it started with. The ladder is a sensitivity fan, not a probability distribution: adjacent members diverge by roughly 1,200 km over seven days. levels_spanned reports how many GFS levels the fan actually straddles, usually 2 or 3."
 },
 "files": {
  "trajectories_csv_gz": "PBA_forecast_20260807_06Z.csv.gz",
  "trajectories_geojson_gz": "PBA_forecast_20260807_06Z.geojson.gz"
 },
 "counts": {
  "flights": 34,
  "members": 9,
  "rows": 181593
 },
 "flights": [
  {
   "callsign": "AG6NS-23",
   "flight_id": "AG6NS-23_2026-02-07",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 09:53:40",
   "seed_lat": -59.6875,
   "seed_lon": 84.25001,
   "seed_alt_m": 12420.0,
   "seed_age_h": 1.44,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 3,
   "nominal_end": {
    "valid_time": "2026-08-14 09:30:00",
    "lat": -45.41066,
    "lon": -6.65928,
    "alt_m": 12128.3
   },
   "member_spread_deg": {
    "lat": 6.63,
    "lon": 56.54
   },
   "member_spread_now_deg": {
    "lat": 0.49,
    "lon": 0.34
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "BSS52",
   "flight_id": "BSS52_2025-12-25",
   "payload_type": "WSPR",
   "seed_time": "2026-07-24 17:39:48",
   "seed_lat": 59.97917,
   "seed_lon": 4.08333,
   "seed_alt_m": 13000.0,
   "seed_age_h": 329.67,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 55.12315,
    "lon": -99.07811,
    "alt_m": 13044.1
   },
   "member_spread_deg": {
    "lat": 43.57,
    "lon": 270.94
   },
   "member_spread_now_deg": {
    "lat": 45.17,
    "lon": 126.52
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "BSS53",
   "flight_id": "BSS53_2026-03-09",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 02:00:18",
   "seed_lat": 53.25,
   "seed_lon": -109.0,
   "seed_alt_m": 12710.0,
   "seed_age_h": 9.33,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 66.7647,
    "lon": 21.02,
    "alt_m": 12401.9
   },
   "member_spread_deg": {
    "lat": 14.85,
    "lon": 64.54
   },
   "member_spread_now_deg": {
    "lat": 1.25,
    "lon": 4.15
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "BSS54",
   "flight_id": "BSS54_2026-07-09",
   "payload_type": "WSPR",
   "seed_time": "2026-08-06 09:15:03",
   "seed_lat": 58.04167,
   "seed_lon": 26.125,
   "seed_alt_m": 13940.0,
   "seed_age_h": 26.08,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 1,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 45.46517,
    "lon": 139.94382,
    "alt_m": 14295.2
   },
   "member_spread_deg": {
    "lat": 29.79,
    "lon": 312.91
   },
   "member_spread_now_deg": {
    "lat": 7.39,
    "lon": 5.14
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "DG2GG-23",
   "flight_id": "DG2GG-23_2026-05-23",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 01:39:00",
   "seed_lat": 37.8125,
   "seed_lon": -149.33333,
   "seed_alt_m": 13020.0,
   "seed_age_h": 9.68,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 40.2211,
    "lon": 11.9442,
    "alt_m": 12745.1
   },
   "member_spread_deg": {
    "lat": 31.15,
    "lon": 104.2
   },
   "member_spread_now_deg": {
    "lat": 1.42,
    "lon": 4.28
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "DG2GG-25",
   "flight_id": "DG2GG-25_2026-06-15",
   "payload_type": "WSPR",
   "seed_time": "2026-07-25 07:22:00",
   "seed_lat": 68.97917,
   "seed_lon": 68.16667,
   "seed_alt_m": 12990.0,
   "seed_age_h": 315.97,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 72.8573,
    "lon": -8.50876,
    "alt_m": 12635.0
   },
   "member_spread_deg": {
    "lat": 34.15,
    "lon": 313.19
   },
   "member_spread_now_deg": {
    "lat": 37.06,
    "lon": 225.26
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "DG2GG-27",
   "flight_id": "DG2GG-27_2026-07-04",
   "payload_type": "WSPR",
   "seed_time": "2026-08-06 22:53:00",
   "seed_lat": 37.4375,
   "seed_lon": -100.95833,
   "seed_alt_m": 13850.0,
   "seed_age_h": 12.45,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 10.01358,
    "lon": -120.59843,
    "alt_m": 14104.7
   },
   "member_spread_deg": {
    "lat": 35.11,
    "lon": 46.18
   },
   "member_spread_now_deg": {
    "lat": 1.51,
    "lon": 1.55
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "DG2GG-29",
   "flight_id": "DG2GG-29_2026-07-28",
   "payload_type": "WSPR",
   "seed_time": "2026-08-04 04:57:00",
   "seed_lat": 46.91667,
   "seed_lon": 165.25,
   "seed_alt_m": 13380.0,
   "seed_age_h": 78.38,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 20.82829,
    "lon": -106.36272,
    "alt_m": 13585.9
   },
   "member_spread_deg": {
    "lat": 74.95,
    "lon": 261.38
   },
   "member_spread_now_deg": {
    "lat": 31.26,
    "lon": 357.02
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "DJ2DS-34",
   "flight_id": "DJ2DS-34_2026-04-22",
   "payload_type": "WSPR",
   "seed_time": "2026-07-28 14:41:00",
   "seed_lat": 30.70833,
   "seed_lon": -70.5,
   "seed_alt_m": 9190.0,
   "seed_age_h": 236.65,
   "float_reliable": false,
   "dead_reckoned": true,
   "levels_spanned": 4,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 31.35349,
    "lon": 64.34324,
    "alt_m": 9080.8
   },
   "member_spread_deg": {
    "lat": 39.82,
    "lon": 314.36
   },
   "member_spread_now_deg": {
    "lat": 29.56,
    "lon": 133.08
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "DL0MMZ",
   "flight_id": "DL0MMZ_2026-07-24",
   "payload_type": "OTHER",
   "seed_time": "2026-07-25 15:59:04",
   "seed_lat": 36.60802,
   "seed_lon": 30.46457,
   "seed_alt_m": 8441.0,
   "seed_age_h": 307.35,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 4,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 47.83395,
    "lon": 38.155,
    "alt_m": 8712.2
   },
   "member_spread_deg": {
    "lat": 54.28,
    "lon": 335.35
   },
   "member_spread_now_deg": {
    "lat": 42.01,
    "lon": 329.9
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "DL0MZ-493",
   "flight_id": "DL0MZ-493_2026-07-25",
   "payload_type": "WSPR",
   "seed_time": "2026-07-29 07:36:01",
   "seed_lat": 64.20833,
   "seed_lon": 58.16667,
   "seed_alt_m": 12170.0,
   "seed_age_h": 219.73,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 3,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 74.20207,
    "lon": 113.05783,
    "alt_m": 11902.2
   },
   "member_spread_deg": {
    "lat": 34.48,
    "lon": 183.75
   },
   "member_spread_now_deg": {
    "lat": 50.24,
    "lon": 133.51
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "DL0MZ-493e",
   "flight_id": "DL0MZ-493e_2026-07-25",
   "payload_type": "WSPR",
   "seed_time": "2026-07-29 07:27:02",
   "seed_lat": 64.15625,
   "seed_lon": 58.08889,
   "seed_alt_m": 12170.0,
   "seed_age_h": 219.88,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 3,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 44.27653,
    "lon": -96.26943,
    "alt_m": 12664.9
   },
   "member_spread_deg": {
    "lat": 40.42,
    "lon": 179.18
   },
   "member_spread_now_deg": {
    "lat": 37.18,
    "lon": 61.37
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "DN3LEO-13",
   "flight_id": "DN3LEO-13_2026-04-12",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 10:53:00",
   "seed_lat": 73.27083,
   "seed_lon": -36.20833,
   "seed_alt_m": 12300.0,
   "seed_age_h": 0.45,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 3,
   "nominal_end": {
    "valid_time": "2026-08-14 11:00:00",
    "lat": 62.10415,
    "lon": -14.56152,
    "alt_m": 12291.7
   },
   "member_spread_deg": {
    "lat": 19.35,
    "lon": 110.27
   },
   "member_spread_now_deg": {
    "lat": 0.08,
    "lon": 0.23
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "DO3GU-40",
   "flight_id": "DO3GU-40_2026-06-19",
   "payload_type": "WSPR",
   "seed_time": "2026-07-24 12:15:47",
   "seed_lat": 71.20833,
   "seed_lon": 93.16667,
   "seed_alt_m": 15164.0,
   "seed_age_h": 335.07,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 72.19887,
    "lon": -106.74064,
    "alt_m": 14946.6
   },
   "member_spread_deg": {
    "lat": 25.58,
    "lon": 210.34
   },
   "member_spread_now_deg": {
    "lat": 34.77,
    "lon": 338.95
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "EI6BFW-18",
   "flight_id": "EI6BFW-18_2026-07-25",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 02:03:00",
   "seed_lat": 62.85417,
   "seed_lon": -131.95833,
   "seed_alt_m": 12900.0,
   "seed_age_h": 9.28,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 82.91578,
    "lon": -129.79854,
    "alt_m": 12553.8
   },
   "member_spread_deg": {
    "lat": 36.23,
    "lon": 117.13
   },
   "member_spread_now_deg": {
    "lat": 0.68,
    "lon": 2.69
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "K5NOT-11",
   "flight_id": "K5NOT-11_2026-06-20",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 01:55:37",
   "seed_lat": 46.16661,
   "seed_lon": 129.125,
   "seed_alt_m": 13010.0,
   "seed_age_h": 9.41,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 18.64839,
    "lon": -168.00191,
    "alt_m": 13516.7
   },
   "member_spread_deg": {
    "lat": 39.84,
    "lon": 334.62
   },
   "member_spread_now_deg": {
    "lat": 6.87,
    "lon": 5.49
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "K9YO-23",
   "flight_id": "K9YO-23_2026-07-13",
   "payload_type": "WSPR",
   "seed_time": "2026-07-27 06:25:49",
   "seed_lat": 52.5833,
   "seed_lon": 125.16663,
   "seed_alt_m": 12840.0,
   "seed_age_h": 268.9,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 19.62583,
    "lon": -176.027,
    "alt_m": 13252.0
   },
   "member_spread_deg": {
    "lat": 74.53,
    "lon": 338.88
   },
   "member_spread_now_deg": {
    "lat": 74.81,
    "lon": 277.63
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "KC3LBR-449",
   "flight_id": "KC3LBR-449_2026-07-06",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 10:57:03",
   "seed_lat": 60.33333,
   "seed_lon": -63.91667,
   "seed_alt_m": 13310.0,
   "seed_age_h": 0.38,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 11:00:00",
    "lat": 55.99127,
    "lon": 36.81611,
    "alt_m": 13412.4
   },
   "member_spread_deg": {
    "lat": 6.91,
    "lon": 115.42
   },
   "member_spread_now_deg": {
    "lat": 0.04,
    "lon": 0.15
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "KC3LBR-485",
   "flight_id": "KC3LBR-485_2026-03-19",
   "payload_type": "WSPR",
   "seed_time": "2026-07-28 09:08:18",
   "seed_lat": 50.14583,
   "seed_lon": 23.375,
   "seed_alt_m": 12850.0,
   "seed_age_h": 242.2,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 54.52386,
    "lon": -104.90838,
    "alt_m": 12943.6
   },
   "member_spread_deg": {
    "lat": 41.6,
    "lon": 326.46
   },
   "member_spread_now_deg": {
    "lat": 38.83,
    "lon": 271.11
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "KC5TRB-1",
   "flight_id": "KC5TRB-1_2026-06-20",
   "payload_type": "WSPR",
   "seed_time": "2026-08-06 01:55:43",
   "seed_lat": 77.04161,
   "seed_lon": 175.7917,
   "seed_alt_m": 12360.0,
   "seed_age_h": 33.41,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 3,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 77.58645,
    "lon": 55.81823,
    "alt_m": 12402.5
   },
   "member_spread_deg": {
    "lat": 36.82,
    "lon": 120.06
   },
   "member_spread_now_deg": {
    "lat": 25.06,
    "lon": 27.76
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "KD7FXO-1",
   "flight_id": "KD7FXO-1_2026-08-02",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 10:15:00",
   "seed_lat": 51.875,
   "seed_lon": -52.41667,
   "seed_alt_m": 12890.0,
   "seed_age_h": 1.08,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 09:45:00",
    "lat": 48.89651,
    "lon": -0.86828,
    "alt_m": 12888.1
   },
   "member_spread_deg": {
    "lat": 40.3,
    "lon": 128.61
   },
   "member_spread_now_deg": {
    "lat": 0.39,
    "lon": 0.33
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "KE8RES-8",
   "flight_id": "KE8RES-8_2026-06-20",
   "payload_type": "WSPR",
   "seed_time": "2026-08-06 22:06:00",
   "seed_lat": 62.375,
   "seed_lon": -80.91667,
   "seed_alt_m": 12140.0,
   "seed_age_h": 13.23,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 3,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 50.60233,
    "lon": -68.29394,
    "alt_m": 12097.4
   },
   "member_spread_deg": {
    "lat": 16.59,
    "lon": 84.1
   },
   "member_spread_now_deg": {
    "lat": 1.2,
    "lon": 5.36
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "KE9DAB-11",
   "flight_id": "KE9DAB-11_2026-07-29",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 10:41:00",
   "seed_lat": 45.27083,
   "seed_lon": 28.16667,
   "seed_alt_m": 12080.0,
   "seed_age_h": 0.65,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 3,
   "nominal_end": {
    "valid_time": "2026-08-14 10:15:00",
    "lat": 29.64312,
    "lon": 132.6427,
    "alt_m": 12369.7
   },
   "member_spread_deg": {
    "lat": 25.57,
    "lon": 313.89
   },
   "member_spread_now_deg": {
    "lat": 0.16,
    "lon": 0.2
   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
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   "flight_id": "KI1TEN-1_2026-07-23",
   "payload_type": "WSPR",
   "seed_time": "2026-08-01 22:55:27",
   "seed_lat": 23.95828,
   "seed_lon": -104.12496,
   "seed_alt_m": 12380.0,
   "seed_age_h": 132.41,
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   "dead_reckoned": true,
   "levels_spanned": 3,
   "nominal_end": {
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    "lat": 15.88844,
    "lon": -81.02821,
    "alt_m": 12347.3
   },
   "member_spread_deg": {
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   },
   "member_spread_now_deg": {
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   },
   "display_as": "region",
   "display_reason": "seed_age"
  },
  {
   "callsign": "KI6DS-11",
   "flight_id": "KI6DS-11_2026-02-03",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 10:55:45",
   "seed_lat": 69.41661,
   "seed_lon": -32.95831,
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   "seed_age_h": 0.41,
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   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 11:00:00",
    "lat": 64.49697,
    "lon": 125.81569,
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   },
   "member_spread_deg": {
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   },
   "member_spread_now_deg": {
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   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "PC4L-11",
   "flight_id": "PC4L-11_2026-07-16",
   "payload_type": "APRS",
   "seed_time": "2026-07-26 12:46:26",
   "seed_lat": 42.93908,
   "seed_lon": 39.39383,
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   "seed_age_h": 286.56,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 3,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 31.42162,
    "lon": -128.39049,
    "alt_m": 12235.1
   },
   "member_spread_deg": {
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   },
   "member_spread_now_deg": {
    "lat": 56.94,
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   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "SP0LND-6",
   "flight_id": "SP0LND-6_2026-07-25",
   "payload_type": "APRS",
   "seed_time": "2026-07-26 13:19:17",
   "seed_lat": 44.85792,
   "seed_lon": 29.04891,
   "seed_alt_m": 13803.0,
   "seed_age_h": 286.01,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 53.5756,
    "lon": -72.08795,
    "alt_m": 13428.4
   },
   "member_spread_deg": {
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   },
   "member_spread_now_deg": {
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    "lon": 102.88
   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "SP2ROC-41",
   "flight_id": "SP2ROC-41_2026-01-25",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 07:13:00",
   "seed_lat": 57.77083,
   "seed_lon": 143.0,
   "seed_alt_m": 15460.0,
   "seed_age_h": 4.12,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 06:45:00",
    "lat": 46.49181,
    "lon": -139.99007,
    "alt_m": 15666.1
   },
   "member_spread_deg": {
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   "member_spread_now_deg": {
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   },
   "display_as": "track",
   "display_reason": "fresh"
  },
  {
   "callsign": "SP6MPL-34",
   "flight_id": "SP6MPL-34_2025-12-03",
   "payload_type": "WSPR",
   "seed_time": "2026-07-31 18:52:00",
   "seed_lat": 74.5625,
   "seed_lon": -160.0,
   "seed_alt_m": 12890.0,
   "seed_age_h": 160.47,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
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    "lat": 45.00455,
    "lon": -60.98284,
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   "member_spread_deg": {
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   "member_spread_now_deg": {
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   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "SP6MPL-9",
   "flight_id": "SP6MPL-9_2026-08-02",
   "payload_type": "APRS",
   "seed_time": "2026-08-04 04:05:45",
   "seed_lat": 45.52942,
   "seed_lon": 75.286,
   "seed_alt_m": 12836.0,
   "seed_age_h": 79.24,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:30:00",
    "lat": 51.98581,
    "lon": -10.94327,
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   "member_spread_deg": {
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   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "VE3VRO-36",
   "flight_id": "VE3VRO-36_2026-07-30",
   "payload_type": "WSPR",
   "seed_time": "2026-08-07 10:16:00",
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   "seed_lon": 58.54167,
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   "seed_age_h": 1.07,
   "float_reliable": true,
   "dead_reckoned": false,
   "levels_spanned": 2,
   "nominal_end": {
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    "lat": 41.42773,
    "lon": 153.93612,
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   "member_spread_deg": {
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   },
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   "display_as": "track",
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  },
  {
   "callsign": "YU9OMT-1",
   "flight_id": "YU9OMT-1_2026-05-24",
   "payload_type": "WSPR",
   "seed_time": "2026-07-26 12:50:00",
   "seed_lat": 39.60417,
   "seed_lon": 35.08336,
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   "seed_age_h": 286.5,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
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    "lat": 56.01519,
    "lon": -102.19088,
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   "member_spread_deg": {
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   },
   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "ZS6SRC-37",
   "flight_id": "ZS6SRC-37_2026-07-15",
   "payload_type": "WSPR",
   "seed_time": "2026-07-31 04:34:00",
   "seed_lat": -23.70833,
   "seed_lon": 149.29167,
   "seed_alt_m": 12380.0,
   "seed_age_h": 174.77,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 3,
   "nominal_end": {
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    "lat": -9.29883,
    "lon": 41.47493,
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   "member_spread_deg": {
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   "member_spread_now_deg": {
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   "display_as": "region",
   "display_reason": "member_spread"
  },
  {
   "callsign": "ZS6SRC-84",
   "flight_id": "ZS6SRC-84_2026-07-12",
   "payload_type": "WSPR",
   "seed_time": "2026-07-27 15:20:00",
   "seed_lat": -7.75,
   "seed_lon": 8.375,
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   "seed_age_h": 260.0,
   "float_reliable": true,
   "dead_reckoned": true,
   "levels_spanned": 2,
   "nominal_end": {
    "valid_time": "2026-08-14 05:45:00",
    "lat": 8.65344,
    "lon": -48.27024,
    "alt_m": 13141.2
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   "member_spread_deg": {
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   "member_spread_now_deg": {
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    "lon": 251.25
   },
   "display_as": "region",
   "display_reason": "member_spread"
  }
 ]
}