{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.7934, -77.4719)",
 "slug": "discovered-lane-42-7934-77-4719",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.780947029002732,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 133.0,
   "end_distance_m": 135.0,
   "start_elevation_m": 371.30311462398504,
   "end_elevation_m": 371.8187335645651,
   "min_gradient_pct": -8.282778870338348
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.67145591500169,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 132.0,
   "end_distance_m": 135.0,
   "start_elevation_m": 371.04858988711504,
   "end_elevation_m": 371.8187335645651,
   "min_gradient_pct": -8.155070995542246
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.10345822197678,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 136.0,
   "start_elevation_m": 370.80610643398757,
   "end_elevation_m": 372.0612793450864,
   "min_gradient_pct": -7.7686640708361665
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.34289423046323,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 370.80610643398757,
   "end_elevation_m": 373.2403958570339,
   "min_gradient_pct": -7.324769787005607
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.853500304970225,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 125.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 369.44134333285206,
   "end_elevation_m": 374.2120433938461,
   "min_gradient_pct": -6.938172141144037
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.239706235931862,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 123.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 369.0355309066322,
   "end_elevation_m": 374.84545746561514,
   "min_gradient_pct": -6.888857211399227
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.732678477079844,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 111.0,
   "end_distance_m": 161.0,
   "start_elevation_m": 366.61936725750047,
   "end_elevation_m": 377.4857064960404,
   "min_gradient_pct": -5.820995888600237
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.560747513637807,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 99.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 364.5063150099803,
   "end_elevation_m": 384.0670625236181,
   "min_gradient_pct": -4.498517718757739
  }
 ],
 "shape": {
  "ascent_concentration": 0.409,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 155.0,
  "shape_class": "sustained"
 },
 "length_m": 1120.7310551467856,
 "start_elevation_m": 359.59999802038396,
 "end_elevation_m": 440.7485796425756,
 "endpoint_gain_m": 81.14858162219161,
 "overall_gradient_pct": 7.240682878334565,
 "accumulated_ascent_m": 86.84415939089564,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.10345822197678,
   "start_distance_m": 131.0,
   "end_distance_m": 136.0,
   "midpoint_distance_m": 133.5,
   "start_elevation_m": 370.80610643398757,
   "end_elevation_m": 372.0612793450864,
   "start_xy": [
    297330.5683310276,
    4740831.406890371
   ],
   "end_xy": [
    297335.5668649756,
    4740831.527962128
   ]
  },
  "max_10m": {
   "gradient_pct": 24.34289423046323,
   "start_distance_m": 131.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 370.80610643398757,
   "end_elevation_m": 373.2403958570339,
   "start_xy": [
    297330.5683310276,
    4740831.406890371
   ],
   "end_xy": [
    297340.56539892365,
    4740831.649033884
   ]
  },
  "max_20m": {
   "gradient_pct": 23.853500304970225,
   "start_distance_m": 125.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 135.0,
   "start_elevation_m": 369.44134333285206,
   "end_elevation_m": 374.2120433938461,
   "start_xy": [
    297324.5700902899,
    4740831.261604263
   ],
   "end_xy": [
    297344.5642260821,
    4740831.745891289
   ]
  },
  "max_25m": {
   "gradient_pct": 23.239706235931862,
   "start_distance_m": 123.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 135.5,
   "start_elevation_m": 369.0355309066322,
   "end_elevation_m": 374.84545746561514,
   "start_xy": [
    297322.57026774844,
    4740831.2606001105
   ],
   "end_xy": [
    297347.5633464509,
    4740831.818534343
   ]
  },
  "max_50m": {
   "gradient_pct": 21.732678477079844,
   "start_distance_m": 111.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 366.61936725750047,
   "end_elevation_m": 377.4857064960404,
   "start_xy": [
    297310.57055925654,
    4740831.344242863
   ],
   "end_xy": [
    297360.55953471584,
    4740832.13332091
   ]
  },
  "max_100m": {
   "gradient_pct": 19.560747513637807,
   "start_distance_m": 99.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 149.0,
   "start_elevation_m": 364.5063150099803,
   "end_elevation_m": 384.0670625236181,
   "start_xy": [
    297298.5708507647,
    4740831.427885615
   ],
   "end_xy": [
    297398.321363469,
    4740835.810728472
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.7686640708361665,
   "start_distance_m": 616.0,
   "end_distance_m": 621.0,
   "midpoint_distance_m": 618.5,
   "start_elevation_m": 416.92803111064416,
   "end_elevation_m": 416.53959790710235,
   "start_xy": [
    297813.88496415043,
    4740836.536588607
   ],
   "end_xy": [
    297818.86628826667,
    4740836.104836307
   ]
  },
  "min_10m": {
   "gradient_pct": -7.324769787005607,
   "start_distance_m": 616.0,
   "end_distance_m": 626.0,
   "midpoint_distance_m": 621.0,
   "start_elevation_m": 416.92803111064416,
   "end_elevation_m": 416.1955541319436,
   "start_xy": [
    297813.88496415043,
    4740836.536588607
   ],
   "end_xy": [
    297823.8476123829,
    4740835.673084007
   ]
  },
  "min_20m": {
   "gradient_pct": -6.938172141144037,
   "start_distance_m": 605.0,
   "end_distance_m": 625.0,
   "midpoint_distance_m": 615.0,
   "start_elevation_m": 417.65381173725007,
   "end_elevation_m": 416.26617730902126,
   "start_xy": [
    297802.95266747754,
    4740837.730352643
   ],
   "end_xy": [
    297822.85134755966,
    4740835.759434466
   ]
  },
  "min_25m": {
   "gradient_pct": -6.888857211399227,
   "start_distance_m": 605.0,
   "end_distance_m": 630.0,
   "midpoint_distance_m": 617.5,
   "start_elevation_m": 417.65381173725007,
   "end_elevation_m": 415.93159743440026,
   "start_xy": [
    297802.95266747754,
    4740837.730352643
   ],
   "end_xy": [
    297827.8326716759,
    4740835.327682166
   ]
  },
  "min_50m": {
   "gradient_pct": -5.820995888600237,
   "start_distance_m": 599.0,
   "end_distance_m": 649.0,
   "midpoint_distance_m": 624.0,
   "start_elevation_m": 417.98305438277475,
   "end_elevation_m": 415.07255643847463,
   "start_xy": [
    297797.0040221936,
    4740838.513691194
   ],
   "end_xy": [
    297846.44844847964,
    4740835.575509275
   ]
  },
  "min_100m": {
   "gradient_pct": -4.498517718757739,
   "start_distance_m": 573.0,
   "end_distance_m": 673.0,
   "midpoint_distance_m": 623.0,
   "start_elevation_m": 418.8519596094915,
   "end_elevation_m": 414.35344189073373,
   "start_xy": [
    297771.2010792769,
    4740841.683602688
   ],
   "end_xy": [
    297868.7735145128,
    4740843.9827387
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.780947029002732,
   "start_distance_m": 133.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 371.30311462398504,
   "end_elevation_m": 371.8187335645651,
   "start_xy": [
    297332.5677446068,
    4740831.455319073
   ],
   "end_xy": [
    297334.567158186,
    4740831.503747776
   ]
  },
  "max_3m": {
   "gradient_pct": 25.67145591500169,
   "start_distance_m": 132.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 133.5,
   "start_elevation_m": 371.04858988711504,
   "end_elevation_m": 371.8187335645651,
   "start_xy": [
    297331.5680378172,
    4740831.431104722
   ],
   "end_xy": [
    297334.567158186,
    4740831.503747776
   ]
  }
 },
 "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": 0.528,
   "obstruction_max_height_m": 23.39,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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_x29y475_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T11:05:18+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-band1.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": [
   "x29y475"
  ],
  "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_3_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": "Richmond",
  "county": "New York"
 }
}