{
 "ocl_version": "0.1.0",
 "name": "Barnes Hill Road",
 "slug": "barnes-hill-road-2-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.12754137907018,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 127.0,
   "end_distance_m": 129.0,
   "start_elevation_m": 492.70449396260244,
   "end_elevation_m": 493.12704479018385,
   "min_gradient_pct": -13.879619890599315
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.0365464859611,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 127.0,
   "end_distance_m": 130.0,
   "start_elevation_m": 492.70449396260244,
   "end_elevation_m": 493.3355903571813,
   "min_gradient_pct": -9.210443511873715
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.727961042705374,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 125.0,
   "end_distance_m": 130.0,
   "start_elevation_m": 492.299192305046,
   "end_elevation_m": 493.3355903571813,
   "min_gradient_pct": -9.120325394075053
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.62853247259568,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 127.0,
   "end_distance_m": 137.0,
   "start_elevation_m": 492.70449396260244,
   "end_elevation_m": 494.767347209862,
   "min_gradient_pct": -8.41571978413981
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.44992174850961,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 118.0,
   "end_distance_m": 138.0,
   "start_elevation_m": 490.88281888691085,
   "end_elevation_m": 494.9728032366128,
   "min_gradient_pct": -7.145583559138515
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.171339742533064,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 115.0,
   "end_distance_m": 140.0,
   "start_elevation_m": 490.3099129408996,
   "end_elevation_m": 495.3527478765329,
   "min_gradient_pct": -6.667596956756142
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.59194159904075,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 103.0,
   "end_distance_m": 153.0,
   "start_elevation_m": 488.2429733645281,
   "end_elevation_m": 497.5389441640485,
   "min_gradient_pct": -4.384417677367196
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.99953476263778,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 103.0,
   "end_distance_m": 203.0,
   "start_elevation_m": 488.2429733645281,
   "end_elevation_m": 505.2425081271659,
   "min_gradient_pct": 1.253816287984364
  }
 ],
 "shape": {
  "ascent_concentration": 0.283,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 390.0,
  "shape_class": "sustained"
 },
 "length_m": 1833.3999999999992,
 "start_elevation_m": 486.5265303222948,
 "end_elevation_m": 701.9067269512395,
 "endpoint_gain_m": 215.38019662894476,
 "overall_gradient_pct": 11.74758354035916,
 "accumulated_ascent_m": 217.95587124335788,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.727961042705374,
   "start_distance_m": 125.0,
   "end_distance_m": 130.0,
   "midpoint_distance_m": 127.5,
   "start_elevation_m": 492.299192305046,
   "end_elevation_m": 493.3355903571813,
   "start_xy": [
    510863.93467530125,
    4667515.154562619
   ],
   "end_xy": [
    510868.69233279827,
    4667516.685786037
   ]
  },
  "max_10m": {
   "gradient_pct": 20.62853247259568,
   "start_distance_m": 127.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 492.70449396260244,
   "end_elevation_m": 494.767347209862,
   "start_xy": [
    510865.84688087436,
    4667515.740625624
   ],
   "end_xy": [
    510874.9895904222,
    4667519.742623052
   ]
  },
  "max_20m": {
   "gradient_pct": 20.44992174850961,
   "start_distance_m": 118.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 490.88281888691085,
   "end_elevation_m": 494.9728032366128,
   "start_xy": [
    510857.1223176601,
    4667513.6577708805
   ],
   "end_xy": [
    510875.87065545603,
    4667520.215278795
   ]
  },
  "max_25m": {
   "gradient_pct": 20.171339742533064,
   "start_distance_m": 115.0,
   "end_distance_m": 140.0,
   "midpoint_distance_m": 127.5,
   "start_elevation_m": 490.3099129408996,
   "end_elevation_m": 495.3527478765329,
   "start_xy": [
    510854.1432774428,
    4667513.303766101
   ],
   "end_xy": [
    510877.52918874705,
    4667521.332984933
   ]
  },
  "max_50m": {
   "gradient_pct": 18.59194159904075,
   "start_distance_m": 103.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 488.2429733645281,
   "end_elevation_m": 497.5389441640485,
   "start_xy": [
    510842.4251242446,
    4667510.773085467
   ],
   "end_xy": [
    510887.17460476863,
    4667529.921977632
   ]
  },
  "max_100m": {
   "gradient_pct": 16.99953476263778,
   "start_distance_m": 103.0,
   "end_distance_m": 203.0,
   "midpoint_distance_m": 153.0,
   "start_elevation_m": 488.2429733645281,
   "end_elevation_m": 505.2425081271659,
   "start_xy": [
    510842.4251242446,
    4667510.773085467
   ],
   "end_xy": [
    510921.6106495181,
    4667566.138361213
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.120325394075053,
   "start_distance_m": 13.0,
   "end_distance_m": 18.0,
   "midpoint_distance_m": 15.5,
   "start_elevation_m": 485.92197696082854,
   "end_elevation_m": 485.4659606911248,
   "start_xy": [
    510772.5638506486,
    4667457.303940356
   ],
   "end_xy": [
    510776.66380394524,
    4667460.153997439
   ]
  },
  "min_10m": {
   "gradient_pct": -8.41571978413981,
   "start_distance_m": 10.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 15.0,
   "start_elevation_m": 486.1427958613163,
   "end_elevation_m": 485.3012238829023,
   "start_xy": [
    510769.7779381408,
    4667456.190975296
   ],
   "end_xy": [
    510778.2760736394,
    4667461.337461035
   ]
  },
  "min_20m": {
   "gradient_pct": -7.145583559138515,
   "start_distance_m": 6.0,
   "end_distance_m": 26.0,
   "midpoint_distance_m": 16.0,
   "start_elevation_m": 486.3600168375742,
   "end_elevation_m": 484.9309001257465,
   "start_xy": [
    510766.06382501556,
    4667454.705930119
   ],
   "end_xy": [
    510782.61433432496,
    4667465.43466169
   ]
  },
  "min_25m": {
   "gradient_pct": -6.667596956756142,
   "start_distance_m": 3.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 15.5,
   "start_elevation_m": 486.5103815647413,
   "end_elevation_m": 484.84348232555226,
   "start_xy": [
    510763.2779125078,
    4667453.59296506
   ],
   "end_xy": [
    510783.9206818171,
    4667466.949077821
   ]
  },
  "min_50m": {
   "gradient_pct": -4.384417677367196,
   "start_distance_m": 1.0,
   "end_distance_m": 51.0,
   "midpoint_distance_m": 26.0,
   "start_elevation_m": 486.55595064203254,
   "end_elevation_m": 484.36374180334894,
   "start_xy": [
    510761.4206833732,
    4667452.850873553
   ],
   "end_xy": [
    510799.22605720686,
    4667484.1059939675
   ]
  },
  "min_100m": {
   "gradient_pct": 1.253816287984364,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 486.5265303222948,
   "end_elevation_m": 487.78034661027914,
   "start_xy": [
    510760.492,
    4667452.48
   ],
   "end_xy": [
    510839.5081714857,
    4667510.072096839
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.12754137907018,
   "start_distance_m": 127.0,
   "end_distance_m": 129.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 492.70449396260244,
   "end_elevation_m": 493.12704479018385,
   "start_xy": [
    510865.84688087436,
    4667515.740625624
   ],
   "end_xy": [
    510867.75852846715,
    4667516.328316607
   ]
  },
  "max_3m": {
   "gradient_pct": 21.0365464859611,
   "start_distance_m": 127.0,
   "end_distance_m": 130.0,
   "midpoint_distance_m": 128.5,
   "start_elevation_m": 492.70449396260244,
   "end_elevation_m": 493.3355903571813,
   "start_xy": [
    510865.84688087436,
    4667515.740625624
   ],
   "end_xy": [
    510868.69233279827,
    4667516.685786037
   ]
  }
 },
 "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": 0.708,
   "obstruction_max_height_m": 27.14,
   "flagged_windows_m": [
    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_x51y467_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-08T17:53:59+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": "retro-box-260908",
  "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": [
   "x51y467"
  ],
  "route_cut_m": 1833.4,
  "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": "Andes",
  "county": "New York"
 }
}