{
 "ocl_version": "0.1.0",
 "name": "Montana Road",
 "slug": "montana-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 15.196512685770358,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2305.0,
   "end_distance_m": 2307.0,
   "start_elevation_m": 266.46491478942227,
   "end_elevation_m": 266.7688450431377,
   "min_gradient_pct": -5.427634493069888
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 14.348441736402151,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1777.0,
   "end_distance_m": 1780.0,
   "start_elevation_m": 225.09790956098578,
   "end_elevation_m": 225.52836281307785,
   "min_gradient_pct": -5.005278903398865
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 14.02516413281603,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1777.0,
   "end_distance_m": 1782.0,
   "start_elevation_m": 225.09790956098578,
   "end_elevation_m": 225.79916776762659,
   "min_gradient_pct": -4.709728793541217
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 13.86959932535234,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1777.0,
   "end_distance_m": 1787.0,
   "start_elevation_m": 225.09790956098578,
   "end_elevation_m": 226.48486949352102,
   "min_gradient_pct": -4.345073012744081
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 13.624864510116481,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1772.0,
   "end_distance_m": 1792.0,
   "start_elevation_m": 224.42304503623797,
   "end_elevation_m": 227.14801793826126,
   "min_gradient_pct": -3.8337151228004984
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 13.467607314146107,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1769.0,
   "end_distance_m": 1794.0,
   "start_elevation_m": 224.04826874061328,
   "end_elevation_m": 227.4151705691498,
   "min_gradient_pct": -3.5805485172488716
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 12.927627406413421,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1746.0,
   "end_distance_m": 1796.0,
   "start_elevation_m": 221.19935850769338,
   "end_elevation_m": 227.6631722109001,
   "min_gradient_pct": -3.0513360495245934
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.164124723856503,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1703.0,
   "end_distance_m": 1803.0,
   "start_elevation_m": 216.30534827428784,
   "end_elevation_m": 228.46947299814434,
   "min_gradient_pct": -2.1258449261150645
  }
 ],
 "shape": {
  "ascent_concentration": 0.374,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 131.0,
  "shape_class": "sustained"
 },
 "length_m": 3429.500716397448,
 "start_elevation_m": 110.9807298638906,
 "end_elevation_m": 308.68595274017446,
 "endpoint_gain_m": 197.70522287628387,
 "overall_gradient_pct": 5.764839818548434,
 "accumulated_ascent_m": 203.13137442153305,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 14.02516413281603,
   "start_distance_m": 1777.0,
   "end_distance_m": 1782.0,
   "midpoint_distance_m": 1779.5,
   "start_elevation_m": 225.09790956098578,
   "end_elevation_m": 225.79916776762659,
   "start_xy": [
    492895.3987734785,
    4508949.474310521
   ],
   "end_xy": [
    492896.2822160382,
    4508954.394903225
   ]
  },
  "max_10m": {
   "gradient_pct": 13.86959932535234,
   "start_distance_m": 1777.0,
   "end_distance_m": 1787.0,
   "midpoint_distance_m": 1782.0,
   "start_elevation_m": 225.09790956098578,
   "end_elevation_m": 226.48486949352102,
   "start_xy": [
    492895.3987734785,
    4508949.474310521
   ],
   "end_xy": [
    492897.1437630559,
    4508959.32011761
   ]
  },
  "max_20m": {
   "gradient_pct": 13.624864510116481,
   "start_distance_m": 1772.0,
   "end_distance_m": 1792.0,
   "midpoint_distance_m": 1782.0,
   "start_elevation_m": 224.42304503623797,
   "end_elevation_m": 227.14801793826126,
   "start_xy": [
    492894.1962955944,
    4508944.621059349
   ],
   "end_xy": [
    492898.00531007367,
    4508964.245331994
   ]
  },
  "max_25m": {
   "gradient_pct": 13.467607314146107,
   "start_distance_m": 1769.0,
   "end_distance_m": 1794.0,
   "midpoint_distance_m": 1781.5,
   "start_elevation_m": 224.04826874061328,
   "end_elevation_m": 227.4151705691498,
   "start_xy": [
    492893.4748088639,
    4508941.709108646
   ],
   "end_xy": [
    492898.3499288808,
    4508966.215417748
   ]
  },
  "max_50m": {
   "gradient_pct": 12.927627406413421,
   "start_distance_m": 1746.0,
   "end_distance_m": 1796.0,
   "midpoint_distance_m": 1771.0,
   "start_elevation_m": 221.19935850769338,
   "end_elevation_m": 227.6631722109001,
   "start_xy": [
    492886.8010622637,
    4508919.706137324
   ],
   "end_xy": [
    492898.6945476879,
    4508968.185503502
   ]
  },
  "max_100m": {
   "gradient_pct": 12.164124723856503,
   "start_distance_m": 1703.0,
   "end_distance_m": 1803.0,
   "midpoint_distance_m": 1753.0,
   "start_elevation_m": 216.30534827428784,
   "end_elevation_m": 228.46947299814434,
   "start_xy": [
    492865.4840523692,
    4508882.447335389
   ],
   "end_xy": [
    492899.90071351273,
    4508975.080803641
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.709728793541217,
   "start_distance_m": 653.0,
   "end_distance_m": 658.0,
   "midpoint_distance_m": 655.5,
   "start_elevation_m": 153.4924384621595,
   "end_elevation_m": 153.25695202248244,
   "start_xy": [
    492847.2601939785,
    4507908.596019813
   ],
   "end_xy": [
    492847.23477252026,
    4507913.595955187
   ]
  },
  "min_10m": {
   "gradient_pct": -4.345073012744081,
   "start_distance_m": 650.0,
   "end_distance_m": 660.0,
   "midpoint_distance_m": 655.0,
   "start_elevation_m": 153.60441864022997,
   "end_elevation_m": 153.16991133895556,
   "start_xy": [
    492847.2754468534,
    4507905.596058588
   ],
   "end_xy": [
    492847.22460393695,
    4507915.595929337
   ]
  },
  "min_20m": {
   "gradient_pct": -3.8337151228004984,
   "start_distance_m": 649.0,
   "end_distance_m": 669.0,
   "midpoint_distance_m": 659.0,
   "start_elevation_m": 153.63826943434407,
   "end_elevation_m": 152.87152640978397,
   "start_xy": [
    492847.2805311451,
    4507904.596071513
   ],
   "end_xy": [
    492847.1788453121,
    4507924.595813011
   ]
  },
  "min_25m": {
   "gradient_pct": -3.5805485172488716,
   "start_distance_m": 645.0,
   "end_distance_m": 670.0,
   "midpoint_distance_m": 657.5,
   "start_elevation_m": 153.73583252567653,
   "end_elevation_m": 152.8406953963643,
   "start_xy": [
    492847.30086831166,
    4507900.596123213
   ],
   "end_xy": [
    492847.1737610204,
    4507925.595800086
   ]
  },
  "min_50m": {
   "gradient_pct": -3.0513360495245934,
   "start_distance_m": 649.0,
   "end_distance_m": 699.0,
   "midpoint_distance_m": 674.0,
   "start_elevation_m": 153.63826943434407,
   "end_elevation_m": 152.11260140958177,
   "start_xy": [
    492847.2805311451,
    4507904.596071513
   ],
   "end_xy": [
    492847.0263165626,
    4507954.595425258
   ]
  },
  "min_100m": {
   "gradient_pct": -2.1258449261150645,
   "start_distance_m": 2970.0,
   "end_distance_m": 3070.0,
   "midpoint_distance_m": 3020.0,
   "start_elevation_m": 298.62100404100573,
   "end_elevation_m": 296.49515911489067,
   "start_xy": [
    493296.46851238393,
    4510038.194108207
   ],
   "end_xy": [
    493362.6839682489,
    4510111.664386806
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 15.196512685770358,
   "start_distance_m": 2305.0,
   "end_distance_m": 2307.0,
   "midpoint_distance_m": 2306.0,
   "start_elevation_m": 266.46491478942227,
   "end_elevation_m": 266.7688450431377,
   "start_xy": [
    493140.0293202576,
    4509406.200083437
   ],
   "end_xy": [
    493140.2602410789,
    4509408.186707603
   ]
  },
  "max_3m": {
   "gradient_pct": 14.348441736402151,
   "start_distance_m": 1777.0,
   "end_distance_m": 1780.0,
   "midpoint_distance_m": 1778.5,
   "start_elevation_m": 225.09790956098578,
   "end_elevation_m": 225.52836281307785,
   "start_xy": [
    492895.3987734785,
    4508949.474310521
   ],
   "end_xy": [
    492895.93759723107,
    4508952.424817471
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.213,
   "obstruction_max_height_m": 40.04,
   "flagged_windows_m": [
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nj/USGS_1M_18_x49y451_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif",
   "data/cache/usa/nj/USGS_1M_18_x49y452_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif"
  ],
  "calculated_at": "2026-09-06T01:58:26+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-jersey-2026-09-06.osm.pbf",
  "osm_snapshot": "2026-09-04T20:21:21Z",
  "run_id": "nj-run2-260906",
  "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, NJ_NW_New_Jersey_6_County_Lidar_2017_B17 (collected 2017)",
  "elevation_tile_ids": [
   "x49y451",
   "x49y452"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NJ_NW6Co_2017",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.995,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Franklin",
  "county": "New Jersey"
 }
}