{
 "ocl_version": "0.1.0",
 "name": "Wilson Road",
 "slug": "wilson-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.76022420574532,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 248.0,
   "end_distance_m": 250.0,
   "start_elevation_m": 355.2724454691075,
   "end_elevation_m": 355.9876499532224,
   "min_gradient_pct": -11.33824990980088
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.25796660427992,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 248.0,
   "end_distance_m": 251.0,
   "start_elevation_m": 355.2724454691075,
   "end_elevation_m": 356.2701844672359,
   "min_gradient_pct": -9.139425566305212
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 33.48650035734863,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 86.0,
   "end_distance_m": 91.0,
   "start_elevation_m": 333.21299558015363,
   "end_elevation_m": 334.88732059802106,
   "min_gradient_pct": -9.075887070032422
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.38822088894574,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 86.0,
   "end_distance_m": 96.0,
   "start_elevation_m": 333.21299558015363,
   "end_elevation_m": 336.0518176690482,
   "min_gradient_pct": -8.085797265334804
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.193666251892694,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 256.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 356.9114406601936,
   "end_elevation_m": 361.75017391057213,
   "min_gradient_pct": -7.423317484498284
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.19668581803512,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 256.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 356.9114406601936,
   "end_elevation_m": 362.71061211470237,
   "min_gradient_pct": -6.511770978475624
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.21803702978059,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 227.0,
   "end_distance_m": 277.0,
   "start_elevation_m": 351.41815171632203,
   "end_elevation_m": 362.0271702312123,
   "min_gradient_pct": -4.7737724016818674
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.046170193352452,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 221.0,
   "end_distance_m": 321.0,
   "start_elevation_m": 350.17184548139994,
   "end_elevation_m": 366.2180156747524,
   "min_gradient_pct": -3.733878328725609,
   "suppressed_max_gradient_pct": 18.82109581543682,
   "suppressed_location_m": [
    184.0,
    284.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.49,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 104.0,
  "shape_class": "stepped"
 },
 "length_m": 1456.4991266472148,
 "start_elevation_m": 321.77606244335993,
 "end_elevation_m": 411.41365408688665,
 "endpoint_gain_m": 89.63759164352672,
 "overall_gradient_pct": 6.15431825557409,
 "accumulated_ascent_m": 104.19548804890144,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 33.48650035734863,
   "start_distance_m": 86.0,
   "end_distance_m": 91.0,
   "midpoint_distance_m": 88.5,
   "start_elevation_m": 333.21299558015363,
   "end_elevation_m": 334.88732059802106,
   "start_xy": [
    717690.3234364071,
    4878569.257987325
   ],
   "end_xy": [
    717694.8743387954,
    4878571.329046826
   ]
  },
  "max_10m": {
   "gradient_pct": 28.38822088894574,
   "start_distance_m": 86.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 91.0,
   "start_elevation_m": 333.21299558015363,
   "end_elevation_m": 336.0518176690482,
   "start_xy": [
    717690.3234364071,
    4878569.257987325
   ],
   "end_xy": [
    717699.2471753946,
    4878573.752109835
   ]
  },
  "max_20m": {
   "gradient_pct": 24.193666251892694,
   "start_distance_m": 256.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 266.0,
   "start_elevation_m": 356.9114406601936,
   "end_elevation_m": 361.75017391057213,
   "start_xy": [
    717830.6972885268,
    4878660.922458577
   ],
   "end_xy": [
    717842.4611486931,
    4878676.9917138275
   ]
  },
  "max_25m": {
   "gradient_pct": 23.19668581803512,
   "start_distance_m": 256.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 268.5,
   "start_elevation_m": 356.9114406601936,
   "end_elevation_m": 362.71061211470237,
   "start_xy": [
    717830.6972885268,
    4878660.922458577
   ],
   "end_xy": [
    717844.3313825276,
    4878681.62054446
   ]
  },
  "max_50m": {
   "gradient_pct": 21.21803702978059,
   "start_distance_m": 227.0,
   "end_distance_m": 277.0,
   "midpoint_distance_m": 252.0,
   "start_elevation_m": 351.41815171632203,
   "end_elevation_m": 362.0271702312123,
   "start_xy": [
    717811.709291464,
    4878639.008014659
   ],
   "end_xy": [
    717842.8490040627,
    4878677.913434073
   ]
  },
  "max_100m": {
   "gradient_pct": 16.046170193352452,
   "start_distance_m": 221.0,
   "end_distance_m": 321.0,
   "midpoint_distance_m": 271.0,
   "start_elevation_m": 350.17184548139994,
   "end_elevation_m": 366.2180156747524,
   "start_xy": [
    717807.7297071965,
    4878634.517701858
   ],
   "end_xy": [
    717842.5412062174,
    4878721.326101496
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.075887070032422,
   "start_distance_m": 731.0,
   "end_distance_m": 736.0,
   "midpoint_distance_m": 733.5,
   "start_elevation_m": 402.0592891109195,
   "end_elevation_m": 401.6054947574179,
   "start_xy": [
    717796.126104006,
    4879125.478122722
   ],
   "end_xy": [
    717794.7062543435,
    4879130.269646734
   ]
  },
  "min_10m": {
   "gradient_pct": -8.085797265334804,
   "start_distance_m": 731.0,
   "end_distance_m": 741.0,
   "midpoint_distance_m": 736.0,
   "start_elevation_m": 402.0592891109195,
   "end_elevation_m": 401.250709384386,
   "start_xy": [
    717796.126104006,
    4879125.478122722
   ],
   "end_xy": [
    717793.0002458299,
    4879134.969597261
   ]
  },
  "min_20m": {
   "gradient_pct": -7.423317484498284,
   "start_distance_m": 730.0,
   "end_distance_m": 750.0,
   "midpoint_distance_m": 740.0,
   "start_elevation_m": 402.1119071049218,
   "end_elevation_m": 400.6272436080221,
   "start_xy": [
    717796.3940184541,
    4879124.514680016
   ],
   "end_xy": [
    717789.9294305055,
    4879143.429508208
   ]
  },
  "min_25m": {
   "gradient_pct": -6.511770978475624,
   "start_distance_m": 728.0,
   "end_distance_m": 753.0,
   "midpoint_distance_m": 740.5,
   "start_elevation_m": 402.1674467611118,
   "end_elevation_m": 400.5395040164929,
   "start_xy": [
    717796.9298473502,
    4879122.587794603
   ],
   "end_xy": [
    717788.9058253973,
    4879146.249478525
   ]
  },
  "min_50m": {
   "gradient_pct": -4.7737724016818674,
   "start_distance_m": 810.0,
   "end_distance_m": 860.0,
   "midpoint_distance_m": 835.0,
   "start_elevation_m": 399.281616323848,
   "end_elevation_m": 396.8947301230071,
   "start_xy": [
    717769.4573283423,
    4879199.828914527
   ],
   "end_xy": [
    717742.3768371238,
    4879239.120978771
   ]
  },
  "min_100m": {
   "gradient_pct": -3.733878328725609,
   "start_distance_m": 727.0,
   "end_distance_m": 827.0,
   "midpoint_distance_m": 777.0,
   "start_elevation_m": 402.1927881996181,
   "end_elevation_m": 398.4589098708925,
   "start_xy": [
    717797.1977617984,
    4879121.624351896
   ],
   "end_xy": [
    717763.656899396,
    4879215.8087463165
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.76022420574532,
   "start_distance_m": 248.0,
   "end_distance_m": 250.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 355.2724454691075,
   "end_elevation_m": 355.9876499532224,
   "start_xy": [
    717825.596706545,
    4878654.759337335
   ],
   "end_xy": [
    717826.8718520404,
    4878656.300117645
   ]
  },
  "max_3m": {
   "gradient_pct": 33.25796660427992,
   "start_distance_m": 248.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 249.5,
   "start_elevation_m": 355.2724454691075,
   "end_elevation_m": 356.2701844672359,
   "start_xy": [
    717825.596706545,
    4878654.759337335
   ],
   "end_xy": [
    717827.5094247882,
    4878657.0705078
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.021,
   "windows_resited": [
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.8,
   "obstruction_max_height_m": 30.17,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    190.0,
    220.0
   ]
  ],
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/vt/USGS_1M_18_x71y488_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-04T21:34:30+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/vermont-260821.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "hunt-wave1-260905",
  "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, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
   "x71y488"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/VT_Statewide_2_A23",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.999,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Corinth",
  "county": "Vermont"
 }
}