{
 "ocl_version": "0.1.0",
 "name": "Vershire Riding School Road",
 "slug": "vershire-riding-school-road",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.762892318184868,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 81.0,
   "end_distance_m": 83.0,
   "start_elevation_m": 572.276408262817,
   "end_elevation_m": 572.7116661091807,
   "min_gradient_pct": -15.503308847962671,
   "suppressed_max_gradient_pct": 43.82784718780499,
   "suppressed_location_m": [
    72.0,
    74.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.08381619116714,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 81.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 572.276408262817,
   "end_elevation_m": 572.878922748552,
   "min_gradient_pct": -11.482004467378223,
   "suppressed_max_gradient_pct": 41.45296566058126,
   "suppressed_location_m": [
    71.0,
    74.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.542575209463394,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 15.0,
   "end_distance_m": 20.0,
   "start_elevation_m": 559.8057776917029,
   "end_elevation_m": 560.6829064521761,
   "min_gradient_pct": -6.958625962904534,
   "suppressed_max_gradient_pct": 33.57328935035184,
   "suppressed_location_m": [
    71.0,
    76.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 15.938734384621966,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 11.0,
   "end_distance_m": 21.0,
   "start_elevation_m": 559.2266101595875,
   "end_elevation_m": 560.8204835980497,
   "min_gradient_pct": -4.708773733186717,
   "suppressed_max_gradient_pct": 28.182472766231967,
   "suppressed_location_m": [
    52.0,
    62.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 13.175389875837027,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1.0,
   "end_distance_m": 21.0,
   "start_elevation_m": 558.1854056228823,
   "end_elevation_m": 560.8204835980497,
   "min_gradient_pct": -2.879623671609579,
   "suppressed_max_gradient_pct": 25.847354194818877,
   "suppressed_location_m": [
    47.0,
    67.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 7.866004874149439,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 221.0,
   "end_distance_m": 246.0,
   "start_elevation_m": 586.7190251847737,
   "end_elevation_m": 588.6855264033111,
   "min_gradient_pct": -2.0453361652298554,
   "suppressed_max_gradient_pct": 24.938359797203702,
   "suppressed_location_m": [
    41.0,
    66.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 4.003164166832221,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 221.0,
   "end_distance_m": 271.0,
   "start_elevation_m": 586.7190251847737,
   "end_elevation_m": 588.7206072681898,
   "min_gradient_pct": 0.7340414342802433,
   "suppressed_max_gradient_pct": 22.389914563202638,
   "suppressed_location_m": [
    25.0,
    75.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.413,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 82.0,
  "shape_class": "sustained"
 },
 "length_m": 435.87309919549887,
 "start_elevation_m": 558.2223243122395,
 "end_elevation_m": 595.291767557749,
 "endpoint_gain_m": 37.06944324550955,
 "overall_gradient_pct": 8.504641216429617,
 "accumulated_ascent_m": 41.68888784218916,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.542575209463394,
   "start_distance_m": 15.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 17.5,
   "start_elevation_m": 559.8057776917029,
   "end_elevation_m": 560.6829064521761,
   "start_xy": [
    709831.4929452053,
    4875367.244995049
   ],
   "end_xy": [
    709836.472566267,
    4875367.695960808
   ]
  },
  "max_10m": {
   "gradient_pct": 15.938734384621966,
   "start_distance_m": 11.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 16.0,
   "start_elevation_m": 559.2266101595875,
   "end_elevation_m": 560.8204835980497,
   "start_xy": [
    709827.5091762573,
    4875366.885015926
   ],
   "end_xy": [
    709837.468508504,
    4875367.785955588
   ]
  },
  "max_20m": {
   "gradient_pct": 13.175389875837027,
   "start_distance_m": 1.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 11.0,
   "start_elevation_m": 558.1854056228823,
   "end_elevation_m": 560.8204835980497,
   "start_xy": [
    709817.5499422371,
    4875365.982994781
   ],
   "end_xy": [
    709837.468508504,
    4875367.785955588
   ]
  },
  "max_25m": {
   "gradient_pct": 7.866004874149439,
   "start_distance_m": 221.0,
   "end_distance_m": 246.0,
   "midpoint_distance_m": 233.5,
   "start_elevation_m": 586.7190251847737,
   "end_elevation_m": 588.6855264033111,
   "start_xy": [
    709992.0178484,
    4875492.444653931
   ],
   "end_xy": [
    710013.0862008516,
    4875505.850355832
   ]
  },
  "max_50m": {
   "gradient_pct": 4.003164166832221,
   "start_distance_m": 221.0,
   "end_distance_m": 271.0,
   "midpoint_distance_m": 246.0,
   "start_elevation_m": 586.7190251847737,
   "end_elevation_m": 588.7206072681898,
   "start_xy": [
    709992.0178484,
    4875492.444653931
   ],
   "end_xy": [
    710034.9289663683,
    4875518.003528637
   ]
  },
  "max_100m": null
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.958625962904534,
   "start_distance_m": 188.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 190.5,
   "start_elevation_m": 582.8934598356788,
   "end_elevation_m": 582.5455285375335,
   "start_xy": [
    709965.5330343257,
    4875472.7592450455
   ],
   "end_xy": [
    709969.5428521199,
    4875475.746109187
   ]
  },
  "min_10m": {
   "gradient_pct": -4.708773733186717,
   "start_distance_m": 406.0,
   "end_distance_m": 416.0,
   "midpoint_distance_m": 411.0,
   "start_elevation_m": 595.3053374455257,
   "end_elevation_m": 594.834460072207,
   "start_xy": [
    710145.4775331373,
    4875592.062617751
   ],
   "end_xy": [
    710151.5093843641,
    4875600.034003854
   ]
  },
  "min_20m": {
   "gradient_pct": -2.879623671609579,
   "start_distance_m": 402.0,
   "end_distance_m": 422.0,
   "midpoint_distance_m": 412.0,
   "start_elevation_m": 595.3751775007105,
   "end_elevation_m": 594.7992527663886,
   "start_xy": [
    710143.109174528,
    4875588.839129509
   ],
   "end_xy": [
    710155.406483195,
    4875604.596088043
   ]
  },
  "min_25m": {
   "gradient_pct": -2.0453361652298554,
   "start_distance_m": 402.0,
   "end_distance_m": 427.0,
   "midpoint_distance_m": 414.5,
   "start_elevation_m": 595.3751775007105,
   "end_elevation_m": 594.863843459403,
   "start_xy": [
    710143.109174528,
    4875588.839129509
   ],
   "end_xy": [
    710158.6552333151,
    4875608.396826738
   ]
  },
  "min_50m": {
   "gradient_pct": 0.7340414342802433,
   "start_distance_m": 380.0,
   "end_distance_m": 430.0,
   "midpoint_distance_m": 405.0,
   "start_elevation_m": 594.5977494034368,
   "end_elevation_m": 594.9647701205769,
   "start_xy": [
    710129.040539092,
    4875571.94339046
   ],
   "end_xy": [
    710160.6035012067,
    4875610.678109104
   ]
  },
  "min_100m": {
   "gradient_pct": 2.8134384331431193,
   "start_distance_m": 320.0,
   "end_distance_m": 420.0,
   "midpoint_distance_m": 370.0,
   "start_elevation_m": 591.9609975641259,
   "end_elevation_m": 594.774435997269,
   "start_xy": [
    710079.0579386714,
    4875539.220233244
   ],
   "end_xy": [
    710154.1076127009,
    4875603.075254255
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.762892318184868,
   "start_distance_m": 81.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 82.0,
   "start_elevation_m": 572.276408262817,
   "end_elevation_m": 572.7116661091807,
   "start_xy": [
    709884.7751127286,
    4875403.087289284
   ],
   "end_xy": [
    709886.1651224591,
    4875404.525299349
   ]
  },
  "max_3m": {
   "gradient_pct": 20.08381619116714,
   "start_distance_m": 81.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 82.5,
   "start_elevation_m": 572.276408262817,
   "end_elevation_m": 572.878922748552,
   "start_xy": [
    709884.7751127286,
    4875403.087289284
   ],
   "end_xy": [
    709886.8601273239,
    4875405.244304382
   ]
  }
 },
 "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": 0.42,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.507,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    25.0,
    50.0
   ],
   "windows_unresolved": [
    100.0
   ]
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 24.0,
     "end_m": 49.0,
     "raw_pct": 20.07,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 29.0,
     "end_m": 49.0,
     "raw_pct": 21.13,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 295.0,
     "end_m": 300.0,
     "raw_pct": 22.47,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.911,
   "obstruction_max_height_m": 26.3,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50
   ]
  },
  "excluded_ranges_m": [
   [
    22.0,
    80.0
   ],
   [
    100.0,
    220.0
   ],
   [
    293.0,
    302.0
   ],
   [
    330.0,
    360.0
   ]
  ],
  "review": [
   "unresolved_windows"
  ],
  "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_x70y488_VT_Statewide_A23.tif",
   "data/cache/usa/vt/USGS_1M_18_x71y488_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-12T00:22:40+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": "texture-us-vt-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, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
   "x70y488",
   "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": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Chelsea",
  "county": "Vermont"
 }
}