{
 "ocl_version": "0.1.0",
 "name": "Halekoa Drive",
 "slug": "halekoa-drive",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 18.655812154679552,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1358.0,
   "end_distance_m": 1360.0,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 191.39719406320506,
   "min_gradient_pct": -0.07118641732404285
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 18.536676815176634,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1358.0,
   "end_distance_m": 1361.0,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 191.58017812456677,
   "min_gradient_pct": 0.1705230100905434
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 18.196063501348476,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1358.0,
   "end_distance_m": 1363.0,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 191.9338809951789,
   "min_gradient_pct": 0.8061732242174457
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.986800404438554,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1358.0,
   "end_distance_m": 1368.0,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 192.82275786055533,
   "min_gradient_pct": 1.2903513718964632
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.879574801188483,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1358.0,
   "end_distance_m": 1378.0,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 194.59999278034917,
   "min_gradient_pct": 2.373871031307928
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.80948151561313,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1357.0,
   "end_distance_m": 1382.0,
   "start_elevation_m": 190.8530735512116,
   "end_elevation_m": 195.30544393011488,
   "min_gradient_pct": 2.4753568443223344
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.61048875324252,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1330.0,
   "end_distance_m": 1380.0,
   "start_elevation_m": 186.15324982536424,
   "end_elevation_m": 194.9584942019855,
   "min_gradient_pct": 3.914726016306844
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.245733275984406,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1319.0,
   "end_distance_m": 1419.0,
   "start_elevation_m": 184.24779200888605,
   "end_elevation_m": 201.49352528487046,
   "min_gradient_pct": 5.96230463698825
  }
 ],
 "shape": {
  "ascent_concentration": 0.293,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 519.0,
  "shape_class": "sustained"
 },
 "length_m": 2998.324190819048,
 "start_elevation_m": 40.68374114002335,
 "end_elevation_m": 391.8863916135274,
 "endpoint_gain_m": 351.20265047350404,
 "overall_gradient_pct": 11.713298099948508,
 "accumulated_ascent_m": 351.20715763463375,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 18.196063501348476,
   "start_distance_m": 1358.0,
   "end_distance_m": 1363.0,
   "midpoint_distance_m": 1360.5,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 191.9338809951789,
   "start_xy": [
    626638.5399598457,
    2354458.5079585244
   ],
   "end_xy": [
    626641.7395999902,
    2354462.327120297
   ]
  },
  "max_10m": {
   "gradient_pct": 17.986800404438554,
   "start_distance_m": 1358.0,
   "end_distance_m": 1368.0,
   "midpoint_distance_m": 1363.0,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 192.82275786055533,
   "start_xy": [
    626638.5399598457,
    2354458.5079585244
   ],
   "end_xy": [
    626645.2043343189,
    2354465.932063574
   ]
  },
  "max_20m": {
   "gradient_pct": 17.879574801188483,
   "start_distance_m": 1358.0,
   "end_distance_m": 1378.0,
   "midpoint_distance_m": 1368.0,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 194.59999278034917,
   "start_xy": [
    626638.5399598457,
    2354458.5079585244
   ],
   "end_xy": [
    626652.1338029763,
    2354473.1419501286
   ]
  },
  "max_25m": {
   "gradient_pct": 17.80948151561313,
   "start_distance_m": 1357.0,
   "end_distance_m": 1382.0,
   "midpoint_distance_m": 1369.5,
   "start_elevation_m": 190.8530735512116,
   "end_elevation_m": 195.30544393011488,
   "start_xy": [
    626637.9805000816,
    2354457.679101014
   ],
   "end_xy": [
    626654.985854847,
    2354475.9174852776
   ]
  },
  "max_50m": {
   "gradient_pct": 17.61048875324252,
   "start_distance_m": 1330.0,
   "end_distance_m": 1380.0,
   "midpoint_distance_m": 1355.0,
   "start_elevation_m": 186.15324982536424,
   "end_elevation_m": 194.9584942019855,
   "start_xy": [
    626624.2571778533,
    2354434.5950122364
   ],
   "end_xy": [
    626653.5196967078,
    2354474.583927439
   ]
  },
  "max_100m": {
   "gradient_pct": 17.245733275984406,
   "start_distance_m": 1319.0,
   "end_distance_m": 1419.0,
   "midpoint_distance_m": 1369.0,
   "start_elevation_m": 184.24779200888605,
   "end_elevation_m": 201.49352528487046,
   "start_xy": [
    626620.4896738034,
    2354424.2603175994
   ],
   "end_xy": [
    626688.6980683465,
    2354490.8520190297
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.8061732242174457,
   "start_distance_m": 2927.0,
   "end_distance_m": 2932.0,
   "midpoint_distance_m": 2929.5,
   "start_elevation_m": 387.6331870288265,
   "end_elevation_m": 387.6734956900374,
   "start_xy": [
    627158.6553660593,
    2355815.4375249627
   ],
   "end_xy": [
    627154.466357732,
    2355818.1673984462
   ]
  },
  "min_10m": {
   "gradient_pct": 1.2903513718964632,
   "start_distance_m": 2925.0,
   "end_distance_m": 2935.0,
   "midpoint_distance_m": 2930.0,
   "start_elevation_m": 387.5853802071077,
   "end_elevation_m": 387.7144153442973,
   "start_xy": [
    627159.5518748485,
    2355814.1390664494
   ],
   "end_xy": [
    627151.9529527356,
    2355819.805322536
   ]
  },
  "min_20m": {
   "gradient_pct": 2.373871031307928,
   "start_distance_m": 664.0,
   "end_distance_m": 684.0,
   "midpoint_distance_m": 674.0,
   "start_elevation_m": 107.3909410856637,
   "end_elevation_m": 107.86571529192528,
   "start_xy": [
    626465.5230504822,
    2354041.5971020097
   ],
   "end_xy": [
    626454.3015113143,
    2354058.152374847
   ]
  },
  "min_25m": {
   "gradient_pct": 2.4753568443223344,
   "start_distance_m": 662.0,
   "end_distance_m": 687.0,
   "midpoint_distance_m": 674.5,
   "start_elevation_m": 107.32609013269986,
   "end_elevation_m": 107.94492934378044,
   "start_xy": [
    626466.590089353,
    2354039.919829244
   ],
   "end_xy": [
    626452.6182804392,
    2354060.6356657725
   ]
  },
  "min_50m": {
   "gradient_pct": 3.914726016306844,
   "start_distance_m": 647.0,
   "end_distance_m": 697.0,
   "midpoint_distance_m": 672.0,
   "start_elevation_m": 106.47290677703431,
   "end_elevation_m": 108.43026978518773,
   "start_xy": [
    626468.9192364037,
    2354025.101763445
   ],
   "end_xy": [
    626447.0075108553,
    2354068.9133021906
   ]
  },
  "min_100m": {
   "gradient_pct": 5.96230463698825,
   "start_distance_m": 44.0,
   "end_distance_m": 144.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 45.83412352664246,
   "end_elevation_m": 51.79642816363071,
   "start_xy": [
    626692.2393374742,
    2354001.0637087026
   ],
   "end_xy": [
    626604.0591859599,
    2353958.0427231146
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 18.655812154679552,
   "start_distance_m": 1358.0,
   "end_distance_m": 1360.0,
   "midpoint_distance_m": 1359.0,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 191.39719406320506,
   "start_xy": [
    626638.5399598457,
    2354458.5079585244
   ],
   "end_xy": [
    626639.6607593929,
    2354460.1641543307
   ]
  },
  "max_3m": {
   "gradient_pct": 18.536676815176634,
   "start_distance_m": 1358.0,
   "end_distance_m": 1361.0,
   "midpoint_distance_m": 1359.5,
   "start_elevation_m": 191.02407782011147,
   "end_elevation_m": 191.58017812456677,
   "start_xy": [
    626638.5399598457,
    2354458.5079585244
   ],
   "end_xy": [
    626640.3537062587,
    2354460.885142986
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:26904",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/hi/USGS_1M_4_x62y236_HI_NOAAMauiOahu_2020_B20.tif"
  ],
  "calculated_at": "2026-09-08T04:18:49+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/hawaii-2026-09-08-batch-band1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "hi-run5-260908",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, HI_NOAAMauiOahu_2020_B20 (collected 2020)",
  "elevation_tile_ids": [
   "x62y236"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Honolulu",
  "county": "Hawaii"
 }
}