{
 "rule": " before the run:\n  surface  = per 20 m along-track bin, median of photons within 1.5 m of the pass-wide surface mode\n  bottom   = per 10 m bin, densest 0.5 m depth slice 2.5-40 m below the local surface (the 1.5-2.5 m band is the surface tail / ice),\n             with a gap: every slice between 1.0 m below the surface and 1.0 m above the bottom must hold < thr/2 photons, counted a hit if count >= max(4, bg + 5*sqrt(bg))\n             where bg is the mean count per 0.5 m slice in the 15-40 m band of the same pass (deep-water photon noise)\n  segment  = >= 6 consecutive hit bins (60 m) whose depths change < 1.5 m bin to bin\n  afterpulse guard: a segment with median depth 3.3-5.0 m AND depth std < 0.4 m is discarded (fixed-offset detector echo)\n  pass verdict: bottom seen = at least one surviving segment; depth = median of its bin depths\n  claim SUPPORTED iff >= 2 passes see a bottom shallowe",
 "claims": [
  {
   "claim": 0,
   "region": "unnamed water near 68.4N 82.2W",
   "note": "no photons"
  },
  {
   "passes": 17,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 1,
   "region": "St. Lawrence estuary",
   "lat": 47.47857,
   "lon": -70.10465,
   "predicted_shoal_m": 3.6,
   "chart_m": 27.4,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 19,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 2,
   "region": "St. Lawrence estuary",
   "lat": 47.47486,
   "lon": -70.10877,
   "predicted_shoal_m": 4.1,
   "chart_m": 25.7,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 19,
   "passes_with_bottom": 1,
   "bottom_depths_m": [
    3.2
   ],
   "afterpulse_segments": 0,
   "claim": 3,
   "region": "Amundsen Gulf",
   "lat": 69.40771,
   "lon": -124.12863,
   "predicted_shoal_m": 4.5,
   "chart_m": 21.1,
   "passes_shallower_than_0p6chart": 1,
   "supported_pending_control": false
  },
  {
   "passes": 6,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 4,
   "region": "Cape Breton / Sydney Bight",
   "lat": 45.6842,
   "lon": -61.62021,
   "predicted_shoal_m": 5.6,
   "chart_m": 23.7,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 2,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 5,
   "region": "Queen Maud Gulf",
   "lat": 68.54659,
   "lon": -99.86128,
   "predicted_shoal_m": 4.3,
   "chart_m": 31.1,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 37,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 6,
   "region": "unnamed water near 68.4N 82.2W",
   "lat": 68.4221,
   "lon": -82.15528,
   "predicted_shoal_m": 6.0,
   "chart_m": 28.3,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 21,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 7,
   "region": "unnamed water near 48.1N 65.9W",
   "lat": 48.10176,
   "lon": -65.92626,
   "predicted_shoal_m": 3.3,
   "chart_m": 21.8,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 7,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 8,
   "region": "Vancouver Island west coast",
   "lat": 49.38217,
   "lon": -126.38391,
   "predicted_shoal_m": 3.0,
   "chart_m": 23.1,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 8,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 9,
   "region": "Vancouver Island west coast",
   "lat": 49.38217,
   "lon": -126.38117,
   "predicted_shoal_m": 3.4,
   "chart_m": 23.1,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 68,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 10,
   "region": "Rae Strait / King William Is.",
   "lat": 68.90656,
   "lon": -94.68771,
   "predicted_shoal_m": 5.5,
   "chart_m": 26.7,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 32,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 11,
   "region": "Foxe Channel",
   "lat": 64.06262,
   "lon": -83.48951,
   "predicted_shoal_m": 3.2,
   "chart_m": 21.2,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 7,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 12,
   "region": "Scotian Shelf",
   "lat": 44.05598,
   "lon": -59.65593,
   "predicted_shoal_m": 3.2,
   "chart_m": 30.8,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 7,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 13,
   "region": "Ungava Bay",
   "lat": 58.7715,
   "lon": -66.13903,
   "predicted_shoal_m": 3.6,
   "chart_m": 51.9,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 60,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 14,
   "region": "Amundsen Gulf",
   "lat": 71.61215,
   "lon": -119.04565,
   "predicted_shoal_m": 3.9,
   "chart_m": 21.5,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 3,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 15,
   "region": "Simpson Strait",
   "lat": 68.42513,
   "lon": -98.62177,
   "predicted_shoal_m": 4.5,
   "chart_m": 21.7,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 8,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 16,
   "region": "Cape Breton / Sydney Bight",
   "lat": 46.49051,
   "lon": -61.12194,
   "predicted_shoal_m": 3.8,
   "chart_m": 31.3,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 6,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 17,
   "region": "Mingan / Quebec North Shore",
   "lat": 50.2256,
   "lon": -64.18847,
   "predicted_shoal_m": 4.0,
   "chart_m": 47.0,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 7,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 18,
   "region": "Ungava Bay",
   "lat": 58.76865,
   "lon": -66.1404,
   "predicted_shoal_m": 3.6,
   "chart_m": 41.9,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 44,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 19,
   "region": "Simpson Strait",
   "lat": 68.39884,
   "lon": -95.78859,
   "predicted_shoal_m": 4.9,
   "chart_m": 21.7,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 18,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 20,
   "region": "Cape Breton / Sydney Bight",
   "lat": 46.48388,
   "lon": -61.11507,
   "predicted_shoal_m": 3.8,
   "chart_m": 32.0,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 20,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 21,
   "region": "unnamed water near 48.1N 65.9W",
   "lat": 48.10268,
   "lon": -65.92214,
   "predicted_shoal_m": 5.0,
   "chart_m": 27.9,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 75,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 22,
   "region": "Simpson Strait",
   "lat": 68.08761,
   "lon": -98.75217,
   "predicted_shoal_m": 3.9,
   "chart_m": 22.4,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "claim": 23,
   "region": "Queen Maud Gulf",
   "note": "no photons"
  },
  {
   "passes": 35,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 24,
   "region": "Ungava Bay",
   "lat": 59.25963,
   "lon": -69.19321,
   "predicted_shoal_m": 3.5,
   "chart_m": 21.3,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 46,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 25,
   "region": "Rae Strait / King William Is.",
   "lat": 68.85159,
   "lon": -94.66849,
   "predicted_shoal_m": 5.1,
   "chart_m": 21.3,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 2,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 26,
   "region": "Queen Maud Gulf",
   "lat": 68.58224,
   "lon": -99.86952,
   "predicted_shoal_m": 5.2,
   "chart_m": 21.6,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 12,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 27,
   "region": "unnamed water near 62.2N 74.8W",
   "lat": 62.21295,
   "lon": -74.7827,
   "predicted_shoal_m": 3.4,
   "chart_m": 34.8,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 24,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 28,
   "region": "St. Lawrence estuary",
   "lat": 47.63252,
   "lon": -70.04563,
   "predicted_shoal_m": 3.2,
   "chart_m": 29.7,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 37,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 29,
   "region": "Bellot Strait",
   "lat": 72.1025,
   "lon": -90.04124,
   "predicted_shoal_m": 3.4,
   "chart_m": 25.0,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "claim": 30,
   "region": "Queen Maud Gulf",
   "note": "no photons"
  },
  {
   "passes": 29,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 31,
   "region": "Bellot Strait",
   "lat": 71.54614,
   "lon": -93.28485,
   "predicted_shoal_m": 3.2,
   "chart_m": 33.0,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 12,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 32,
   "region": "Simpson Strait",
   "lat": 68.51591,
   "lon": -99.46458,
   "predicted_shoal_m": 6.6,
   "chart_m": 21.8,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 2,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 33,
   "region": "Bellot Strait",
   "lat": 71.7766,
   "lon": -93.91902,
   "predicted_shoal_m": 6.1,
   "chart_m": 24.0,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 38,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 34,
   "region": "Queen Maud Gulf",
   "lat": 68.44584,
   "lon": -99.99169,
   "predicted_shoal_m": 6.3,
   "chart_m": 21.4,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 16,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 35,
   "region": "Cape Breton / Sydney Bight",
   "lat": 46.47253,
   "lon": -61.13017,
   "predicted_shoal_m": 5.0,
   "chart_m": 25.4,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 32,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 36,
   "region": "Bellot Strait",
   "lat": 71.40425,
   "lon": -93.10777,
   "predicted_shoal_m": 3.1,
   "chart_m": 22.2,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "passes": 72,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 37,
   "region": "Bellot Strait",
   "lat": 71.77617,
   "lon": -93.95608,
   "predicted_shoal_m": 3.9,
   "chart_m": 21.8,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  },
  {
   "claim": 38,
   "region": "unnamed water near 68.6N 75.8W",
   "note": "no photons"
  },
  {
   "passes": 27,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "claim": 39,
   "region": "unnamed water near 68.3N 66.2W",
   "lat": 68.31018,
   "lon": -66.2453,
   "predicted_shoal_m": 3.2,
   "chart_m": 23.6,
   "passes_shallower_than_0p6chart": 0,
   "supported_pending_control": false
  }
 ],
 "controls": [
  {
   "passes": 48,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "site": "Lancaster Sound",
   "chart_m": 400
  },
  {
   "passes": 21,
   "passes_with_bottom": 0,
   "bottom_depths_m": [],
   "afterpulse_segments": 0,
   "site": "Hudson Strait centre",
   "chart_m": 300
  }
 ],
 "control_false_positive_rate": 0.0,
 "verdict": "control passes",
 "claims_supported_pending_control": []
}