{
 "ocl_version": "0.1.0",
 "name": "Old M\u0101malahoa Highway",
 "slug": "old-mamalahoa-highway-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.66824095081708,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 41.0,
   "end_distance_m": 43.0,
   "start_elevation_m": 70.25390825884436,
   "end_elevation_m": 70.7872730778607,
   "min_gradient_pct": -60.160750441768585,
   "suppressed_max_gradient_pct": 106.66328171456243,
   "suppressed_location_m": [
    6.0,
    8.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.410684586783304,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 40.0,
   "end_distance_m": 43.0,
   "start_elevation_m": 70.0549525402572,
   "end_elevation_m": 70.7872730778607,
   "min_gradient_pct": -60.03434527188508,
   "suppressed_max_gradient_pct": 87.459260950682,
   "suppressed_location_m": [
    6.0,
    9.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.284910450555174,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 169.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 84.32903099853496,
   "end_elevation_m": 85.34327652106272,
   "min_gradient_pct": -56.317185337840954,
   "suppressed_max_gradient_pct": 69.82677116713432,
   "suppressed_location_m": [
    52.0,
    57.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.283027184094777,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 164.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 83.31497380265324,
   "end_elevation_m": 85.34327652106272,
   "min_gradient_pct": -40.65924021653203,
   "suppressed_max_gradient_pct": 53.182358238635175,
   "suppressed_location_m": [
    49.0,
    59.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.22784396997025,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 154.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 81.29770772706867,
   "end_elevation_m": 85.34327652106272,
   "min_gradient_pct": -25.64186719762077,
   "suppressed_max_gradient_pct": 31.687587404384914,
   "suppressed_location_m": [
    39.0,
    59.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.20004738659196,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 152.0,
   "end_distance_m": 177.0,
   "start_elevation_m": 80.97640295784576,
   "end_elevation_m": 85.77641480449375,
   "min_gradient_pct": -12.390396525311587,
   "suppressed_max_gradient_pct": 27.043774146454044,
   "suppressed_location_m": [
    33.0,
    58.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.365,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 40.0,
  "shape_class": "sustained"
 },
 "length_m": 326.6665872585467,
 "start_elevation_m": 68.21160271971436,
 "end_elevation_m": 94.73764396666232,
 "endpoint_gain_m": 26.526041246947955,
 "overall_gradient_pct": 8.120218682161514,
 "accumulated_ascent_m": 43.32779931880577,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.284910450555174,
   "start_distance_m": 169.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 171.5,
   "start_elevation_m": 84.32903099853496,
   "end_elevation_m": 85.34327652106272,
   "start_xy": [
    278893.1654949891,
    2198039.0673245634
   ],
   "end_xy": [
    278896.12985234865,
    2198043.0938096805
   ]
  },
  "max_10m": {
   "gradient_pct": 20.283027184094777,
   "start_distance_m": 164.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 83.31497380265324,
   "end_elevation_m": 85.34327652106272,
   "start_xy": [
    278890.2009443182,
    2198035.0409816536
   ],
   "end_xy": [
    278896.12985234865,
    2198043.0938096805
   ]
  },
  "max_20m": {
   "gradient_pct": 20.22784396997025,
   "start_distance_m": 154.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 164.0,
   "start_elevation_m": 81.29770772706867,
   "end_elevation_m": 85.34327652106272,
   "start_xy": [
    278884.27095524914,
    2198026.9889493682
   ],
   "end_xy": [
    278896.12985234865,
    2198043.0938096805
   ]
  },
  "max_25m": {
   "gradient_pct": 19.20004738659196,
   "start_distance_m": 152.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 164.5,
   "start_elevation_m": 80.97640295784576,
   "end_elevation_m": 85.77641480449375,
   "start_xy": [
    278883.08521678194,
    2198025.3783519836
   ],
   "end_xy": [
    278897.9091197478,
    2198045.509220096
   ]
  },
  "max_50m": null,
  "max_100m": null
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -56.317185337840954,
   "start_distance_m": 19.0,
   "end_distance_m": 24.0,
   "midpoint_distance_m": 21.5,
   "start_elevation_m": 71.84146608534432,
   "end_elevation_m": 69.02560681845227,
   "start_xy": [
    278800.8156198266,
    2197928.1466052877
   ],
   "end_xy": [
    278802.6117213395,
    2197932.812869108
   ]
  },
  "min_10m": {
   "gradient_pct": -40.65924021653203,
   "start_distance_m": 66.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 75.06412365237755,
   "end_elevation_m": 70.99819963072434,
   "start_xy": [
    278816.6975483993,
    2197971.646413172
   ],
   "end_xy": [
    278823.0514649083,
    2197979.368311668
   ]
  },
  "min_20m": {
   "gradient_pct": -25.64186719762077,
   "start_distance_m": 58.0,
   "end_distance_m": 78.0,
   "midpoint_distance_m": 68.0,
   "start_elevation_m": 76.21445914005001,
   "end_elevation_m": 71.08608570052586,
   "start_xy": [
    278811.67819838546,
    2197965.4207411367
   ],
   "end_xy": [
    278824.32254633383,
    2197980.912446167
   ]
  },
  "min_25m": {
   "gradient_pct": -12.390396525311587,
   "start_distance_m": 58.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 70.5,
   "start_elevation_m": 76.21445914005001,
   "end_elevation_m": 73.11686000872211,
   "start_xy": [
    278811.67819838546,
    2197965.4207411367
   ],
   "end_xy": [
    278827.5432540166,
    2197984.7328964095
   ]
  },
  "min_50m": {
   "gradient_pct": -2.8383922673706934,
   "start_distance_m": 201.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 226.0,
   "start_elevation_m": 89.19775378236653,
   "end_elevation_m": 87.77855764868119,
   "start_xy": [
    278910.1578727602,
    2198066.0385028087
   ],
   "end_xy": [
    278935.5544665404,
    2198108.9430603194
   ]
  },
  "min_100m": {
   "gradient_pct": 1.6102374018137624,
   "start_distance_m": 205.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 255.0,
   "start_elevation_m": 89.91808263443386,
   "end_elevation_m": 91.52832003624762,
   "start_xy": [
    278911.92070121004,
    2198069.6291065426
   ],
   "end_xy": [
    278969.4519843798,
    2198144.8435287955
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.66824095081708,
   "start_distance_m": 41.0,
   "end_distance_m": 43.0,
   "midpoint_distance_m": 42.0,
   "start_elevation_m": 70.25390825884436,
   "end_elevation_m": 70.7872730778607,
   "start_xy": [
    278808.6971629989,
    2197948.685803165
   ],
   "end_xy": [
    278809.04701731313,
    2197950.654965921
   ]
  },
  "max_3m": {
   "gradient_pct": 24.410684586783304,
   "start_distance_m": 40.0,
   "end_distance_m": 43.0,
   "midpoint_distance_m": 41.5,
   "start_elevation_m": 70.0549525402572,
   "end_elevation_m": 70.7872730778607,
   "start_xy": [
    278808.3593847424,
    2197947.744855554
   ],
   "end_xy": [
    278809.04701731313,
    2197950.654965921
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.239,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.526,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 4,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 113.0,
     "end_m": 138.0,
     "raw_pct": 21.84,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 118.0,
     "end_m": 138.0,
     "raw_pct": 24.92,
     "reason": "staircase+hump"
    },
    {
     "window_m": 10.0,
     "start_m": 129.0,
     "end_m": 139.0,
     "raw_pct": 32.84,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 131.0,
     "end_m": 136.0,
     "raw_pct": 40.21,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 183.0,
     "end_m": 208.0,
     "raw_pct": 19.68,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 186.0,
     "end_m": 206.0,
     "raw_pct": 22.11,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 305.0,
     "end_m": 315.0,
     "raw_pct": 31.65,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 251.0,
     "end_m": 256.0,
     "raw_pct": 34.27,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 105.0,
     "end_m": 110.0,
     "raw_pct": 34.25,
     "reason": "mask-edge+short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "excluded_ranges_m": [
   [
    2.0,
    30.0
   ],
   [
    45.0,
    93.0
   ],
   [
    103.0,
    141.0
   ],
   [
    181.0,
    210.0
   ],
   [
    249.0,
    258.0
   ],
   [
    303.0,
    317.0
   ]
  ],
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "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:26905",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/hi-east/USGS_1M_5_x27y220_HI_Hawaii_Island_Lidar_NOAA_2017_B17.tif"
  ],
  "calculated_at": "2026-09-12T00:59:59+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.osm.pbf",
  "osm_snapshot": "2026-09-07T20:21:20Z",
  "run_id": "texture-us-hi-260911",
  "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_Hawaii_Island_Lidar_NOAA_2017_B17 (collected 2017)",
  "elevation_tile_ids": [
   "x27y220"
  ],
  "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": "Papaikou-Wailea",
  "county": "Hawaii"
 }
}