{
 "ocl_version": "0.1.0",
 "name": "Brooks Hill Road",
 "slug": "brooks-hill-road-2-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.92107165743664,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2451.0,
   "end_distance_m": 2453.0,
   "start_elevation_m": 589.4315077268893,
   "end_elevation_m": 589.869929160038,
   "min_gradient_pct": -23.09240446228955
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.45985750332784,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2450.0,
   "end_distance_m": 2453.0,
   "start_elevation_m": 589.2261334349382,
   "end_elevation_m": 589.869929160038,
   "min_gradient_pct": -23.003434377642407
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.240257882695914,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2674.0,
   "end_distance_m": 2679.0,
   "start_elevation_m": 622.6106544965082,
   "end_elevation_m": 623.672667390643,
   "min_gradient_pct": -22.93148342996801
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.616784747246584,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2448.0,
   "end_distance_m": 2458.0,
   "start_elevation_m": 588.8188886566613,
   "end_elevation_m": 590.880567131386,
   "min_gradient_pct": -21.80160692010986
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.617250957520014,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2439.0,
   "end_distance_m": 2459.0,
   "start_elevation_m": 587.139521786001,
   "end_elevation_m": 591.062971977505,
   "min_gradient_pct": -19.932990188424355
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.6073766033669,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2450.0,
   "end_distance_m": 2475.0,
   "start_elevation_m": 589.2261334349382,
   "end_elevation_m": 594.12797758578,
   "min_gradient_pct": -19.125216922397613
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.173287189934854,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2426.0,
   "end_distance_m": 2476.0,
   "start_elevation_m": 584.7356864105654,
   "end_elevation_m": 594.3223300055329,
   "min_gradient_pct": -13.657589571743074
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.0385328210873,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2383.0,
   "end_distance_m": 2483.0,
   "start_elevation_m": 577.558606090738,
   "end_elevation_m": 595.5971389118253,
   "min_gradient_pct": -0.7788253308324329
  }
 ],
 "shape": {
  "ascent_concentration": 0.297,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 576.0,
  "shape_class": "sustained"
 },
 "length_m": 2870.3774471042716,
 "start_elevation_m": 302.83468786438516,
 "end_elevation_m": 635.6040038809961,
 "endpoint_gain_m": 332.7693160166109,
 "overall_gradient_pct": 11.593225007823246,
 "accumulated_ascent_m": 339.66886028638567,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.240257882695914,
   "start_distance_m": 2674.0,
   "end_distance_m": 2679.0,
   "midpoint_distance_m": 2676.5,
   "start_elevation_m": 622.6106544965082,
   "end_elevation_m": 623.672667390643,
   "start_xy": [
    546361.3301130427,
    4639021.906959412
   ],
   "end_xy": [
    546360.9098089203,
    4639026.883395362
   ]
  },
  "max_10m": {
   "gradient_pct": 20.616784747246584,
   "start_distance_m": 2448.0,
   "end_distance_m": 2458.0,
   "midpoint_distance_m": 2453.0,
   "start_elevation_m": 588.8188886566613,
   "end_elevation_m": 590.880567131386,
   "start_xy": [
    546279.2357396642,
    4638816.880011193
   ],
   "end_xy": [
    546281.761756685,
    4638826.555714683
   ]
  },
  "max_20m": {
   "gradient_pct": 19.617250957520014,
   "start_distance_m": 2439.0,
   "end_distance_m": 2459.0,
   "midpoint_distance_m": 2449.0,
   "start_elevation_m": 587.139521786001,
   "end_elevation_m": 591.062971977505,
   "start_xy": [
    546276.9623243454,
    4638808.171878053
   ],
   "end_xy": [
    546282.0143583871,
    4638827.523285031
   ]
  },
  "max_25m": {
   "gradient_pct": 19.6073766033669,
   "start_distance_m": 2450.0,
   "end_distance_m": 2475.0,
   "midpoint_distance_m": 2462.5,
   "start_elevation_m": 589.2261334349382,
   "end_elevation_m": 594.12797758578,
   "start_xy": [
    546279.7409430683,
    4638818.815151891
   ],
   "end_xy": [
    546286.0559856205,
    4638843.004410614
   ]
  },
  "max_50m": {
   "gradient_pct": 19.173287189934854,
   "start_distance_m": 2426.0,
   "end_distance_m": 2476.0,
   "midpoint_distance_m": 2451.0,
   "start_elevation_m": 584.7356864105654,
   "end_elevation_m": 594.3223300055329,
   "start_xy": [
    546273.6785022183,
    4638795.593463517
   ],
   "end_xy": [
    546286.3085873225,
    4638843.971980963
   ]
  },
  "max_100m": {
   "gradient_pct": 18.0385328210873,
   "start_distance_m": 2383.0,
   "end_distance_m": 2483.0,
   "midpoint_distance_m": 2433.0,
   "start_elevation_m": 577.558606090738,
   "end_elevation_m": 595.5971389118253,
   "start_xy": [
    546261.2390717212,
    4638754.477474041
   ],
   "end_xy": [
    546288.0767992372,
    4638850.744973405
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -22.93148342996801,
   "start_distance_m": 2835.0,
   "end_distance_m": 2840.0,
   "midpoint_distance_m": 2837.5,
   "start_elevation_m": 640.5584185333385,
   "end_elevation_m": 639.41184436184,
   "start_xy": [
    546278.6875398473,
    4639073.484667447
   ],
   "end_xy": [
    546282.415860174,
    4639070.153057095
   ]
  },
  "min_10m": {
   "gradient_pct": -21.80160692010986,
   "start_distance_m": 2831.0,
   "end_distance_m": 2841.0,
   "midpoint_distance_m": 2836.0,
   "start_elevation_m": 641.3779292935916,
   "end_elevation_m": 639.1977686015806,
   "start_xy": [
    546276.1899233154,
    4639076.488751314
   ],
   "end_xy": [
    546283.1615242393,
    4639069.4867350245
   ]
  },
  "min_20m": {
   "gradient_pct": -19.932990188424355,
   "start_distance_m": 2830.0,
   "end_distance_m": 2850.0,
   "midpoint_distance_m": 2840.0,
   "start_elevation_m": 641.5586204381542,
   "end_elevation_m": 637.5720224004693,
   "start_xy": [
    546275.8209601284,
    4639077.418195323
   ],
   "end_xy": [
    546289.9078596924,
    4639063.534760848
   ]
  },
  "min_25m": {
   "gradient_pct": -19.125216922397613,
   "start_distance_m": 2827.0,
   "end_distance_m": 2852.0,
   "midpoint_distance_m": 2839.5,
   "start_elevation_m": 642.0325728508031,
   "end_elevation_m": 637.2512686202037,
   "start_xy": [
    546274.7140705676,
    4639080.206527351
   ],
   "end_xy": [
    546291.5535993673,
    4639062.398301028
   ]
  },
  "min_50m": {
   "gradient_pct": -13.657589571743074,
   "start_distance_m": 2820.0,
   "end_distance_m": 2870.0,
   "midpoint_distance_m": 2845.0,
   "start_elevation_m": 642.4563792963294,
   "end_elevation_m": 635.6275845104578,
   "start_xy": [
    546276.9063636208,
    4639086.617808355
   ],
   "end_xy": [
    546308.2708318371,
    4639056.634045607
   ]
  },
  "min_100m": {
   "gradient_pct": -0.7788253308324329,
   "start_distance_m": 2770.0,
   "end_distance_m": 2870.0,
   "midpoint_distance_m": 2820.0,
   "start_elevation_m": 636.4064098412903,
   "end_elevation_m": 635.6275845104578,
   "start_xy": [
    546307.2013540647,
    4639062.257855987
   ],
   "end_xy": [
    546308.2708318371,
    4639056.634045607
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.92107165743664,
   "start_distance_m": 2451.0,
   "end_distance_m": 2453.0,
   "midpoint_distance_m": 2452.0,
   "start_elevation_m": 589.4315077268893,
   "end_elevation_m": 589.869929160038,
   "start_xy": [
    546279.9935447704,
    4638819.78272224
   ],
   "end_xy": [
    546280.4987481746,
    4638821.717862938
   ]
  },
  "max_3m": {
   "gradient_pct": 21.45985750332784,
   "start_distance_m": 2450.0,
   "end_distance_m": 2453.0,
   "midpoint_distance_m": 2451.5,
   "start_elevation_m": 589.2261334349382,
   "end_elevation_m": 589.869929160038,
   "start_xy": [
    546279.7409430683,
    4638818.815151891
   ],
   "end_xy": [
    546280.4987481746,
    4638821.717862938
   ]
  }
 },
 "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": 0.351,
   "obstruction_max_height_m": 35.24,
   "flagged_windows_m": [
    2,
    3,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "descends_at_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/ny/USGS_1M_18_x54y464_NY_SouthEast4County_A22.tif"
  ],
  "calculated_at": "2026-09-06T12:39:00+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-york-2026-09-06-batch-band2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ny-run3-260906",
  "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, NY_SouthEast4County_A22 (collected 2022)",
  "elevation_tile_ids": [
   "x54y464"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_SE4County_1_A22",
   "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": "Denning",
  "county": "New York"
 }
}