{
 "ocl_version": "0.1.0",
 "name": "Travis Hill Road",
 "slug": "travis-hill-road-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.094352964660402,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 496.0,
   "end_distance_m": 498.0,
   "start_elevation_m": 323.86358324519074,
   "end_elevation_m": 324.30547030448395,
   "min_gradient_pct": -10.227132895875002
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.779911215359487,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 495.0,
   "end_distance_m": 498.0,
   "start_elevation_m": 323.65207296802316,
   "end_elevation_m": 324.30547030448395,
   "min_gradient_pct": -9.924116317097287
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.308911954012046,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 493.0,
   "end_distance_m": 498.0,
   "start_elevation_m": 323.24002470678334,
   "end_elevation_m": 324.30547030448395,
   "min_gradient_pct": -9.63611055064348
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.771934416522413,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 319.0,
   "end_distance_m": 329.0,
   "start_elevation_m": 293.53035366772434,
   "end_elevation_m": 295.6075471093766,
   "min_gradient_pct": -9.502073549911074
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.665849133322922,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 492.0,
   "end_distance_m": 512.0,
   "start_elevation_m": 323.0420202816509,
   "end_elevation_m": 327.17519010831546,
   "min_gradient_pct": -9.298466338755134
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.52668513277399,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 492.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 323.0420202816509,
   "end_elevation_m": 328.1736915648444,
   "min_gradient_pct": -9.220513214266703
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.067581289796067,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 468.0,
   "end_distance_m": 518.0,
   "start_elevation_m": 318.3267211901375,
   "end_elevation_m": 328.36051183503554,
   "min_gradient_pct": -8.298102282023365
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.31734307653744,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 433.0,
   "end_distance_m": 533.0,
   "start_elevation_m": 312.6109939986858,
   "end_elevation_m": 330.9283370752232,
   "min_gradient_pct": -6.106924295991234
  }
 ],
 "shape": {
  "ascent_concentration": 0.499,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 469.0,
  "shape_class": "stepped"
 },
 "length_m": 7045.740561042486,
 "start_elevation_m": 257.2152368223894,
 "end_elevation_m": 605.234163542484,
 "endpoint_gain_m": 348.0189267200946,
 "overall_gradient_pct": 4.939422956393981,
 "accumulated_ascent_m": 367.2626134291592,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.308911954012046,
   "start_distance_m": 493.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 495.5,
   "start_elevation_m": 323.24002470678334,
   "end_elevation_m": 324.30547030448395,
   "start_xy": [
    565710.0409828232,
    4699421.315101429
   ],
   "end_xy": [
    565711.4499431981,
    4699426.112478906
   ]
  },
  "max_10m": {
   "gradient_pct": 20.771934416522413,
   "start_distance_m": 319.0,
   "end_distance_m": 329.0,
   "midpoint_distance_m": 324.0,
   "start_elevation_m": 293.53035366772434,
   "end_elevation_m": 295.6075471093766,
   "start_xy": [
    565608.2318240514,
    4699295.353254105
   ],
   "end_xy": [
    565617.8997984076,
    4699297.908693763
   ]
  },
  "max_20m": {
   "gradient_pct": 20.665849133322922,
   "start_distance_m": 492.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 502.0,
   "start_elevation_m": 323.0420202816509,
   "end_elevation_m": 327.17519010831546,
   "start_xy": [
    565709.7591907482,
    4699420.355625933
   ],
   "end_xy": [
    565715.3950322481,
    4699439.545135844
   ]
  },
  "max_25m": {
   "gradient_pct": 20.52668513277399,
   "start_distance_m": 492.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 504.5,
   "start_elevation_m": 323.0420202816509,
   "end_elevation_m": 328.1736915648444,
   "start_xy": [
    565709.7591907482,
    4699420.355625933
   ],
   "end_xy": [
    565716.803992623,
    4699444.342513321
   ]
  },
  "max_50m": {
   "gradient_pct": 20.067581289796067,
   "start_distance_m": 468.0,
   "end_distance_m": 518.0,
   "midpoint_distance_m": 493.0,
   "start_elevation_m": 318.3267211901375,
   "end_elevation_m": 328.36051183503554,
   "start_xy": [
    565702.9961809483,
    4699397.328214041
   ],
   "end_xy": [
    565717.085784698,
    4699445.301988817
   ]
  },
  "max_100m": {
   "gradient_pct": 18.31734307653744,
   "start_distance_m": 433.0,
   "end_distance_m": 533.0,
   "midpoint_distance_m": 483.0,
   "start_elevation_m": 312.6109939986858,
   "end_elevation_m": 330.9283370752232,
   "start_xy": [
    565692.3939440388,
    4699364.001150012
   ],
   "end_xy": [
    565721.3126658229,
    4699459.694121249
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.63611055064348,
   "start_distance_m": 6072.0,
   "end_distance_m": 6077.0,
   "midpoint_distance_m": 6074.5,
   "start_elevation_m": 564.9667412402274,
   "end_elevation_m": 564.4849357126952,
   "start_xy": [
    565937.368120454,
    4704656.2977710925
   ],
   "end_xy": [
    565937.3640576686,
    4704661.297769441
   ]
  },
  "min_10m": {
   "gradient_pct": -9.502073549911074,
   "start_distance_m": 5314.0,
   "end_distance_m": 5324.0,
   "midpoint_distance_m": 5319.0,
   "start_elevation_m": 562.6797655934114,
   "end_elevation_m": 561.7295582384203,
   "start_xy": [
    565990.7540009393,
    4703901.361823427
   ],
   "end_xy": [
    565989.2325052893,
    4703911.245398235
   ]
  },
  "min_20m": {
   "gradient_pct": -9.298466338755134,
   "start_distance_m": 6058.0,
   "end_distance_m": 6078.0,
   "midpoint_distance_m": 6068.0,
   "start_elevation_m": 566.2537074163071,
   "end_elevation_m": 564.394014148556,
   "start_xy": [
    565937.3794962533,
    4704642.297775714
   ],
   "end_xy": [
    565937.3632451115,
    4704662.297769112
   ]
  },
  "min_25m": {
   "gradient_pct": -9.220513214266703,
   "start_distance_m": 6057.0,
   "end_distance_m": 6082.0,
   "midpoint_distance_m": 6069.5,
   "start_elevation_m": 566.3391388948921,
   "end_elevation_m": 564.0340105913255,
   "start_xy": [
    565937.3803088104,
    4704641.297776044
   ],
   "end_xy": [
    565937.3599948832,
    4704666.297767791
   ]
  },
  "min_50m": {
   "gradient_pct": -8.298102282023365,
   "start_distance_m": 6041.0,
   "end_distance_m": 6091.0,
   "midpoint_distance_m": 6066.0,
   "start_elevation_m": 567.5613425346079,
   "end_elevation_m": 563.4122913935962,
   "start_xy": [
    565937.4866113046,
    4704625.298925888
   ],
   "end_xy": [
    565937.3526818694,
    4704675.29776482
   ]
  },
  "min_100m": {
   "gradient_pct": -6.106924295991234,
   "start_distance_m": 6021.0,
   "end_distance_m": 6121.0,
   "midpoint_distance_m": 6071.0,
   "start_elevation_m": 568.322449404469,
   "end_elevation_m": 562.2155251084778,
   "start_xy": [
    565937.9609844249,
    4704605.304552426
   ],
   "end_xy": [
    565937.3283051568,
    4704705.297754916
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.094352964660402,
   "start_distance_m": 496.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 497.0,
   "start_elevation_m": 323.86358324519074,
   "end_elevation_m": 324.30547030448395,
   "start_xy": [
    565710.8863590482,
    4699424.1935279155
   ],
   "end_xy": [
    565711.4499431981,
    4699426.112478906
   ]
  },
  "max_3m": {
   "gradient_pct": 21.779911215359487,
   "start_distance_m": 495.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 496.5,
   "start_elevation_m": 323.65207296802316,
   "end_elevation_m": 324.30547030448395,
   "start_xy": [
    565710.6045669732,
    4699423.23405242
   ],
   "end_xy": [
    565711.4499431981,
    4699426.112478906
   ]
  }
 },
 "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": 0.086,
   "obstruction_max_height_m": 21.71,
   "flagged_windows_m": []
  },
  "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/ny/USGS_1M_18_x56y470_NY_FEMAR2_Central_2018_D19.tif",
   "data/cache/usa/ny/USGS_1M_18_x56y471_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T13:01:54+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_FEMAR2_Central_2018_D19 (collected 2018)",
  "elevation_tile_ids": [
   "x56y470",
   "x56y471"
  ],
  "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_4_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": "Rensselaerville",
  "county": "New York"
 }
}