{
 "ocl_version": "0.1.0",
 "name": "West Killie Road",
 "slug": "west-killie-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.878774449988896,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 788.0,
   "end_distance_m": 790.0,
   "start_elevation_m": 471.46950966709056,
   "end_elevation_m": 472.00708515609034,
   "min_gradient_pct": -20.295820673183584
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.301539777135,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 787.0,
   "end_distance_m": 790.0,
   "start_elevation_m": 471.2180389627763,
   "end_elevation_m": 472.00708515609034,
   "min_gradient_pct": -18.634827629551864
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.511160356855953,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 787.0,
   "end_distance_m": 792.0,
   "start_elevation_m": 471.2180389627763,
   "end_elevation_m": 472.4935969806191,
   "min_gradient_pct": -16.492331081507245
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.005999749882676,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 784.0,
   "end_distance_m": 794.0,
   "start_elevation_m": 470.54149981412047,
   "end_elevation_m": 472.94209978910874,
   "min_gradient_pct": -15.804495011909125
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.198961510497952,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 776.0,
   "end_distance_m": 796.0,
   "start_elevation_m": 468.86913882752776,
   "end_elevation_m": 473.30893112962735,
   "min_gradient_pct": -14.819609519477126
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.389728752580822,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 770.0,
   "end_distance_m": 795.0,
   "start_elevation_m": 467.7866641699352,
   "end_elevation_m": 473.1340963580804,
   "min_gradient_pct": -14.888784370215262
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.454432167608843,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 766.0,
   "end_distance_m": 816.0,
   "start_elevation_m": 467.0890226404785,
   "end_elevation_m": 476.8162387242829,
   "min_gradient_pct": -13.521729378387136
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.843730577306417,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 716.0,
   "end_distance_m": 816.0,
   "start_elevation_m": 459.9725081469765,
   "end_elevation_m": 476.8162387242829,
   "min_gradient_pct": -11.293221001537063
  }
 ],
 "shape": {
  "ascent_concentration": 0.47,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 206.0,
  "shape_class": "stepped"
 },
 "length_m": 2654.1460584522765,
 "start_elevation_m": 429.0638560155061,
 "end_elevation_m": 509.7403585672434,
 "endpoint_gain_m": 80.67650255173731,
 "overall_gradient_pct": 3.0396406518329493,
 "accumulated_ascent_m": 136.60532337391982,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.511160356855953,
   "start_distance_m": 787.0,
   "end_distance_m": 792.0,
   "midpoint_distance_m": 789.5,
   "start_elevation_m": 471.2180389627763,
   "end_elevation_m": 472.4935969806191,
   "start_xy": [
    498479.6437368244,
    4631249.9490870675
   ],
   "end_xy": [
    498480.77537747636,
    4631254.8193426505
   ]
  },
  "max_10m": {
   "gradient_pct": 24.005999749882676,
   "start_distance_m": 784.0,
   "end_distance_m": 794.0,
   "midpoint_distance_m": 789.0,
   "start_elevation_m": 470.54149981412047,
   "end_elevation_m": 472.94209978910874,
   "start_xy": [
    498478.9647524332,
    4631247.0269337185
   ],
   "end_xy": [
    498481.2280337371,
    4631256.767444883
   ]
  },
  "max_20m": {
   "gradient_pct": 22.198961510497952,
   "start_distance_m": 776.0,
   "end_distance_m": 796.0,
   "midpoint_distance_m": 786.0,
   "start_elevation_m": 468.86913882752776,
   "end_elevation_m": 473.30893112962735,
   "start_xy": [
    498477.15412739007,
    4631239.234524787
   ],
   "end_xy": [
    498481.6806899979,
    4631258.715547116
   ]
  },
  "max_25m": {
   "gradient_pct": 21.389728752580822,
   "start_distance_m": 770.0,
   "end_distance_m": 795.0,
   "midpoint_distance_m": 782.5,
   "start_elevation_m": 467.7866641699352,
   "end_elevation_m": 473.1340963580804,
   "start_xy": [
    498475.7961586077,
    4631233.390218088
   ],
   "end_xy": [
    498481.4543618675,
    4631257.7414959995
   ]
  },
  "max_50m": {
   "gradient_pct": 19.454432167608843,
   "start_distance_m": 766.0,
   "end_distance_m": 816.0,
   "midpoint_distance_m": 791.0,
   "start_elevation_m": 467.0890226404785,
   "end_elevation_m": 476.8162387242829,
   "start_xy": [
    498474.89084608614,
    4631229.494013623
   ],
   "end_xy": [
    498486.20725260576,
    4631278.196569444
   ]
  },
  "max_100m": {
   "gradient_pct": 16.843730577306417,
   "start_distance_m": 716.0,
   "end_distance_m": 816.0,
   "midpoint_distance_m": 766.0,
   "start_elevation_m": 459.9725081469765,
   "end_elevation_m": 476.8162387242829,
   "start_xy": [
    498463.5744395665,
    4631180.791457802
   ],
   "end_xy": [
    498486.20725260576,
    4631278.196569444
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.492331081507245,
   "start_distance_m": 1798.0,
   "end_distance_m": 1803.0,
   "midpoint_distance_m": 1800.5,
   "start_elevation_m": 462.55305445668773,
   "end_elevation_m": 461.72843790261237,
   "start_xy": [
    498727.0547764637,
    4632230.121992633
   ],
   "end_xy": [
    498728.3357091627,
    4632234.955129443
   ]
  },
  "min_10m": {
   "gradient_pct": -15.804495011909125,
   "start_distance_m": 1840.0,
   "end_distance_m": 1850.0,
   "midpoint_distance_m": 1845.0,
   "start_elevation_m": 458.6323198638059,
   "end_elevation_m": 457.051870362615,
   "start_xy": [
    498737.81461113493,
    4632270.720341833
   ],
   "end_xy": [
    498740.37647653284,
    4632280.386615453
   ]
  },
  "min_20m": {
   "gradient_pct": -14.819609519477126,
   "start_distance_m": 1840.0,
   "end_distance_m": 1860.0,
   "midpoint_distance_m": 1850.0,
   "start_elevation_m": 458.6323198638059,
   "end_elevation_m": 455.66839795991046,
   "start_xy": [
    498737.81461113493,
    4632270.720341833
   ],
   "end_xy": [
    498742.93834193074,
    4632290.052889072
   ]
  },
  "min_25m": {
   "gradient_pct": -14.888784370215262,
   "start_distance_m": 1840.0,
   "end_distance_m": 1865.0,
   "midpoint_distance_m": 1852.5,
   "start_elevation_m": 458.6323198638059,
   "end_elevation_m": 454.9101237712521,
   "start_xy": [
    498737.81461113493,
    4632270.720341833
   ],
   "end_xy": [
    498744.2192746297,
    4632294.886025882
   ]
  },
  "min_50m": {
   "gradient_pct": -13.521729378387136,
   "start_distance_m": 1832.0,
   "end_distance_m": 1882.0,
   "midpoint_distance_m": 1857.0,
   "start_elevation_m": 459.63723549941477,
   "end_elevation_m": 452.8763708102212,
   "start_xy": [
    498735.76511881663,
    4632262.987322939
   ],
   "end_xy": [
    498748.57444580615,
    4632311.318691035
   ]
  },
  "min_100m": {
   "gradient_pct": -11.293221001537063,
   "start_distance_m": 1783.0,
   "end_distance_m": 1883.0,
   "midpoint_distance_m": 1833.0,
   "start_elevation_m": 464.0668223977319,
   "end_elevation_m": 452.77360139619486,
   "start_xy": [
    498723.2119783669,
    4632215.622582204
   ],
   "end_xy": [
    498748.8306323459,
    4632312.285318397
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.878774449988896,
   "start_distance_m": 788.0,
   "end_distance_m": 790.0,
   "midpoint_distance_m": 789.0,
   "start_elevation_m": 471.46950966709056,
   "end_elevation_m": 472.00708515609034,
   "start_xy": [
    498479.87006495474,
    4631250.9231381845
   ],
   "end_xy": [
    498480.32272121555,
    4631252.8712404175
   ]
  },
  "max_3m": {
   "gradient_pct": 26.301539777135,
   "start_distance_m": 787.0,
   "end_distance_m": 790.0,
   "midpoint_distance_m": 788.5,
   "start_elevation_m": 471.2180389627763,
   "end_elevation_m": 472.00708515609034,
   "start_xy": [
    498479.6437368244,
    4631249.9490870675
   ],
   "end_xy": [
    498480.32272121555,
    4631252.8712404175
   ]
  }
 },
 "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": 0.396,
   "obstruction_max_height_m": 26.57,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "descends_at_start",
   "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/ny/USGS_1M_18_x49y464_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T23:16:25+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.osm.pbf",
  "osm_snapshot": "2026-09-04T20:21:21Z",
  "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_FEMAR2_Central_2018_D19 (collected 2018)",
  "elevation_tile_ids": [
   "x49y464"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_FEMAR2_Central_5_2018",
   "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": "Fremont",
  "county": "New York"
 }
}