{
 "ocl_version": "0.1.0",
 "name": "Spaudling Hill Road",
 "slug": "spaudling-hill-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.41040071774751,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 545.0,
   "end_distance_m": 547.0,
   "start_elevation_m": 290.6589423473109,
   "end_elevation_m": 291.4471503616659,
   "min_gradient_pct": -28.018338360806183
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.07164344543791,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 799.0,
   "end_distance_m": 802.0,
   "start_elevation_m": 304.6894659605436,
   "end_elevation_m": 305.74161526390674,
   "min_gradient_pct": -20.3093145250989
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.712407301551593,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 445.0,
   "end_distance_m": 450.0,
   "start_elevation_m": 277.4915683617654,
   "end_elevation_m": 278.977188726843,
   "min_gradient_pct": -12.527981903747332
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.874901972418115,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 445.0,
   "end_distance_m": 455.0,
   "start_elevation_m": 277.4915683617654,
   "end_elevation_m": 279.9790585590072,
   "min_gradient_pct": -6.526801117635159
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.141753632687028,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 791.0,
   "end_distance_m": 811.0,
   "start_elevation_m": 302.96935219379077,
   "end_elevation_m": 307.5977029203282,
   "min_gradient_pct": -5.4141708914144715
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.08563308805242,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 788.0,
   "end_distance_m": 813.0,
   "start_elevation_m": 302.31930870406603,
   "end_elevation_m": 308.09071697607914,
   "min_gradient_pct": -4.929132539019747
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.98290080601771,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 787.0,
   "end_distance_m": 837.0,
   "start_elevation_m": 302.18830671310064,
   "end_elevation_m": 311.1797571161095,
   "min_gradient_pct": -1.4428164822797953
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.320488201688647,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 362.0,
   "end_distance_m": 462.0,
   "start_elevation_m": 265.08632483021677,
   "end_elevation_m": 281.4068130319054,
   "min_gradient_pct": 0.9423156243176436
  }
 ],
 "shape": {
  "ascent_concentration": 0.325,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 140.0,
  "shape_class": "sustained"
 },
 "length_m": 1725.1094955842775,
 "start_elevation_m": 232.97844680198972,
 "end_elevation_m": 396.3099519480951,
 "endpoint_gain_m": 163.33150514610537,
 "overall_gradient_pct": 9.467892070861659,
 "accumulated_ascent_m": 168.6816242200223,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.712407301551593,
   "start_distance_m": 445.0,
   "end_distance_m": 450.0,
   "midpoint_distance_m": 447.5,
   "start_elevation_m": 277.4915683617654,
   "end_elevation_m": 278.977188726843,
   "start_xy": [
    697134.3590030398,
    4758592.317171933
   ],
   "end_xy": [
    697132.4362106365,
    4758596.93267424
   ]
  },
  "max_10m": {
   "gradient_pct": 24.874901972418115,
   "start_distance_m": 445.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 450.0,
   "start_elevation_m": 277.4915683617654,
   "end_elevation_m": 279.9790585590072,
   "start_xy": [
    697134.3590030398,
    4758592.317171933
   ],
   "end_xy": [
    697130.5130627682,
    4758601.54802874
   ]
  },
  "max_20m": {
   "gradient_pct": 23.141753632687028,
   "start_distance_m": 791.0,
   "end_distance_m": 811.0,
   "midpoint_distance_m": 801.0,
   "start_elevation_m": 302.96935219379077,
   "end_elevation_m": 307.5977029203282,
   "start_xy": [
    696916.5606957118,
    4758854.947491634
   ],
   "end_xy": [
    696901.247091996,
    4758867.631060333
   ]
  },
  "max_25m": {
   "gradient_pct": 23.08563308805242,
   "start_distance_m": 788.0,
   "end_distance_m": 813.0,
   "midpoint_distance_m": 800.5,
   "start_elevation_m": 302.31930870406603,
   "end_elevation_m": 308.09071697607914,
   "start_xy": [
    696918.5817302776,
    4758852.730417396
   ],
   "end_xy": [
    696899.6018439913,
    4758868.768231797
   ]
  },
  "max_50m": {
   "gradient_pct": 17.98290080601771,
   "start_distance_m": 787.0,
   "end_distance_m": 837.0,
   "midpoint_distance_m": 812.0,
   "start_elevation_m": 302.18830671310064,
   "end_elevation_m": 311.1797571161095,
   "start_xy": [
    696919.2545868476,
    4758851.990644476
   ],
   "end_xy": [
    696879.8621564223,
    4758882.419042573
   ]
  },
  "max_100m": {
   "gradient_pct": 16.320488201688647,
   "start_distance_m": 362.0,
   "end_distance_m": 462.0,
   "midpoint_distance_m": 412.0,
   "start_elevation_m": 265.08632483021677,
   "end_elevation_m": 281.4068130319054,
   "start_xy": [
    697175.0546217376,
    4758521.291583601
   ],
   "end_xy": [
    697127.8211814736,
    4758608.009744156
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.527981903747332,
   "start_distance_m": 873.0,
   "end_distance_m": 878.0,
   "midpoint_distance_m": 875.5,
   "start_elevation_m": 312.6663815254325,
   "end_elevation_m": 312.0399824302451,
   "start_xy": [
    696849.1724646174,
    4758901.158203886
   ],
   "end_xy": [
    696844.8015374246,
    4758903.5861634
   ]
  },
  "min_10m": {
   "gradient_pct": -6.526801117635159,
   "start_distance_m": 868.0,
   "end_distance_m": 878.0,
   "midpoint_distance_m": 873.0,
   "start_elevation_m": 312.69266254200863,
   "end_elevation_m": 312.0399824302451,
   "start_xy": [
    696853.5437996022,
    4758898.7309784815
   ],
   "end_xy": [
    696844.8015374246,
    4758903.5861634
   ]
  },
  "min_20m": {
   "gradient_pct": -5.4141708914144715,
   "start_distance_m": 616.0,
   "end_distance_m": 636.0,
   "midpoint_distance_m": 626.0,
   "start_elevation_m": 296.95957386335544,
   "end_elevation_m": 295.87673968507255,
   "start_xy": [
    697043.5511518269,
    4758735.588817072
   ],
   "end_xy": [
    697031.402080075,
    4758751.474889959
   ]
  },
  "min_25m": {
   "gradient_pct": -4.929132539019747,
   "start_distance_m": 614.0,
   "end_distance_m": 639.0,
   "midpoint_distance_m": 626.5,
   "start_elevation_m": 297.05645906701477,
   "end_elevation_m": 295.82417593225983,
   "start_xy": [
    697044.7642195986,
    4758733.998702012
   ],
   "end_xy": [
    697029.1759949647,
    4758753.485995119
   ]
  },
  "min_50m": {
   "gradient_pct": -1.4428164822797953,
   "start_distance_m": 615.0,
   "end_distance_m": 665.0,
   "midpoint_distance_m": 640.0,
   "start_elevation_m": 297.03676439615856,
   "end_elevation_m": 296.31535615501866,
   "start_xy": [
    697044.1579788683,
    4758734.793983196
   ],
   "end_xy": [
    697009.8880714144,
    4758770.920897779
   ]
  },
  "min_100m": {
   "gradient_pct": 0.9423156243176436,
   "start_distance_m": 614.0,
   "end_distance_m": 714.0,
   "midpoint_distance_m": 664.0,
   "start_elevation_m": 297.05645906701477,
   "end_elevation_m": 297.9987746913324,
   "start_xy": [
    697044.7642195986,
    4758733.998702012
   ],
   "end_xy": [
    696972.2165043856,
    4758802.183754205
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.41040071774751,
   "start_distance_m": 545.0,
   "end_distance_m": 547.0,
   "midpoint_distance_m": 546.0,
   "start_elevation_m": 290.6589423473109,
   "end_elevation_m": 291.4471503616659,
   "start_xy": [
    697088.1630336897,
    4758680.38889424
   ],
   "end_xy": [
    697086.8652426171,
    4758681.910649258
   ]
  },
  "max_3m": {
   "gradient_pct": 35.07164344543791,
   "start_distance_m": 799.0,
   "end_distance_m": 802.0,
   "midpoint_distance_m": 800.5,
   "start_elevation_m": 304.6894659605436,
   "end_elevation_m": 305.74161526390674,
   "start_xy": [
    696911.1167077206,
    4758860.805326011
   ],
   "end_xy": [
    696908.6493882107,
    4758862.511882127
   ]
  }
 },
 "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": []
 },
 "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_x69y476_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-03T21:08:00+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/spaudling-hill-road/spaudling-hill-road.geojson",
  "run_id": "canopy-all-260903",
  "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": [
   "x69y476"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: VT_Statewide_2_A23: no EPT nodes intersect the corridor; VT_Statewide_1_A23: no EPT nodes intersect the corridor",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Dummerston",
  "county": "Vermont"
 }
}