{
 "source": "IHO DCDB crowdsourced bathymetry, pings uploaded 2026-01-01..2026-09-13 (108M), 44 of 82 platforms kept after calibration against charted soundings (>=300 pings on sounded cells, spread <= 3 m, offset <= 10 m, offset removed); noise floor at sounded cells 1.63 m median",
 "map": "national_v6_out (three-member ensemble)",
 "cells_unsounded_total": 430464,
 "dropout_cells_excluded": 23130,
 "shelf_cells": 278898,
 "all": {
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   "within5": 0.509,
   "within10": 0.702
  },
  "nearest": {
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   "within5": 0.673,
   "within10": 0.833
  },
  "blend": {
   "median": 3.31,
   "within5": 0.651,
   "within10": 0.813
  },
  "n": 278898
 },
 "by_distance_km": {
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    "median": 4.3,
    "within5": 0.55,
    "within10": 0.751
   },
   "nearest": {
    "median": 2.46,
    "within5": 0.804,
    "within10": 0.939
   },
   "blend": {
    "median": 2.46,
    "within5": 0.804,
    "within10": 0.939
   },
   "n": 133196
  },
  "0.25-0.5": {
   "model": {
    "median": 4.67,
    "within5": 0.523,
    "within10": 0.711
   },
   "nearest": {
    "median": 3.02,
    "within5": 0.726,
    "within10": 0.912
   },
   "blend": {
    "median": 3.67,
    "within5": 0.622,
    "within10": 0.818
   },
   "n": 68247
  },
  "0.5-1": {
   "model": {
    "median": 5.5,
    "within5": 0.476,
    "within10": 0.644
   },
   "nearest": {
    "median": 3.75,
    "within5": 0.623,
    "within10": 0.854
   },
   "blend": {
    "median": 4.98,
    "within5": 0.501,
    "within10": 0.67
   },
   "n": 38776
  },
  "1-3": {
   "model": {
    "median": 6.35,
    "within5": 0.428,
    "within10": 0.642
   },
   "nearest": {
    "median": 8.3,
    "within5": 0.339,
    "within10": 0.564
   },
   "blend": {
    "median": 6.44,
    "within5": 0.419,
    "within10": 0.639
   },
   "n": 13774
  },
  "3-6": {
   "model": {
    "median": 8.11,
    "within5": 0.365,
    "within10": 0.564
   },
   "nearest": {
    "median": 25.27,
    "within5": 0.202,
    "within10": 0.338
   },
   "blend": {
    "median": 8.51,
    "within5": 0.38,
    "within10": 0.536
   },
   "n": 6715
  }
 },
 "by_depth_m": {
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   "model": {
    "median": 7.03,
    "within5": 0.413,
    "within10": 0.593
   },
   "nearest": {
    "median": 3.55,
    "within5": 0.616,
    "within10": 0.774
   },
   "blend": {
    "median": 4.11,
    "within5": 0.555,
    "within10": 0.689
   },
   "n": 13252
  },
  "20-50": {
   "model": {
    "median": 4.3,
    "within5": 0.551,
    "within10": 0.722
   },
   "nearest": {
    "median": 2.74,
    "within5": 0.734,
    "within10": 0.847
   },
   "blend": {
    "median": 2.9,
    "within5": 0.705,
    "within10": 0.832
   },
   "n": 48831
  },
  "50-200": {
   "model": {
    "median": 4.93,
    "within5": 0.505,
    "within10": 0.704
   },
   "nearest": {
    "median": 3.28,
    "within5": 0.663,
    "within10": 0.833
   },
   "blend": {
    "median": 3.38,
    "within5": 0.645,
    "within10": 0.816
   },
   "n": 216814
  }
 },
 "by_region": {
  "BC": {
   "model": {
    "median": 4.58,
    "within5": 0.531,
    "within10": 0.75
   },
   "nearest": {
    "median": 3.44,
    "within5": 0.638,
    "within10": 0.773
   },
   "blend": {
    "median": 3.25,
    "within5": 0.667,
    "within10": 0.828
   },
   "n": 147117
  },
  "Atlantic": {
   "model": {
    "median": 3.14,
    "within5": 0.682,
    "within10": 0.888
   },
   "nearest": {
    "median": 3.12,
    "within5": 0.717,
    "within10": 0.909
   },
   "blend": {
    "median": 2.97,
    "within5": 0.731,
    "within10": 0.919
   },
   "n": 79082
  }
 }
}