{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.1653, -72.4231)",
 "slug": "discovered-lane-44-1653-72-4231",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.8455729776864,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 542.0,
   "end_distance_m": 544.0,
   "start_elevation_m": 416.8918156045239,
   "end_elevation_m": 417.60872706407764,
   "min_gradient_pct": -10.74232431408575
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.21265484283064,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 542.0,
   "end_distance_m": 545.0,
   "start_elevation_m": 416.8918156045239,
   "end_elevation_m": 417.91819524980883,
   "min_gradient_pct": -9.011059693364132
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.31127531941638,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 542.0,
   "end_distance_m": 547.0,
   "start_elevation_m": 416.8918156045239,
   "end_elevation_m": 418.50737937049473,
   "min_gradient_pct": -5.799739030628643
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.643420586828256,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 536.0,
   "end_distance_m": 546.0,
   "start_elevation_m": 415.15208388663945,
   "end_elevation_m": 418.21642594532227,
   "min_gradient_pct": -3.888335243441361
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.22498102605016,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 531.0,
   "end_distance_m": 551.0,
   "start_elevation_m": 414.00808252425327,
   "end_elevation_m": 419.4530787294633,
   "min_gradient_pct": -2.943453369347253
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.568699402012044,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 526.0,
   "end_distance_m": 551.0,
   "start_elevation_m": 413.0609038789603,
   "end_elevation_m": 419.4530787294633,
   "min_gradient_pct": -2.6357080581706214
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.470558518323628,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 499.0,
   "end_distance_m": 549.0,
   "start_elevation_m": 408.28089115722423,
   "end_elevation_m": 419.01617041638605,
   "min_gradient_pct": -1.7150602054204
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.627408421726273,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 457.0,
   "end_distance_m": 557.0,
   "start_elevation_m": 401.8742742824017,
   "end_elevation_m": 420.501682704128,
   "min_gradient_pct": 0.27192982187199277
  }
 ],
 "shape": {
  "ascent_concentration": 0.452,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 206.0,
  "shape_class": "stepped"
 },
 "length_m": 581.0000000001476,
 "start_elevation_m": 365.4719998292964,
 "end_elevation_m": 421.5267322003857,
 "endpoint_gain_m": 56.0547323710893,
 "overall_gradient_pct": 9.647974590546482,
 "accumulated_ascent_m": 58.461303157884856,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.31127531941638,
   "start_distance_m": 542.0,
   "end_distance_m": 547.0,
   "midpoint_distance_m": 544.5,
   "start_elevation_m": 416.8918156045239,
   "end_elevation_m": 418.50737937049473,
   "start_xy": [
    706554.5828809564,
    4893224.064286785
   ],
   "end_xy": [
    706559.3870933079,
    4893222.679446493
   ]
  },
  "max_10m": {
   "gradient_pct": 30.643420586828256,
   "start_distance_m": 536.0,
   "end_distance_m": 546.0,
   "midpoint_distance_m": 541.0,
   "start_elevation_m": 415.15208388663945,
   "end_elevation_m": 418.21642594532227,
   "start_xy": [
    706549.0347746848,
    4893226.348433815
   ],
   "end_xy": [
    706558.4250803207,
    4893222.9524501795
   ]
  },
  "max_20m": {
   "gradient_pct": 27.22498102605016,
   "start_distance_m": 531.0,
   "end_distance_m": 551.0,
   "midpoint_distance_m": 541.0,
   "start_elevation_m": 414.00808252425327,
   "end_elevation_m": 419.4530787294633,
   "start_xy": [
    706544.4115297528,
    4893228.2525348095
   ],
   "end_xy": [
    706563.234882179,
    4893221.586506409
   ]
  },
  "max_25m": {
   "gradient_pct": 25.568699402012044,
   "start_distance_m": 526.0,
   "end_distance_m": 551.0,
   "midpoint_distance_m": 538.5,
   "start_elevation_m": 413.0609038789603,
   "end_elevation_m": 419.4530787294633,
   "start_xy": [
    706539.7881428923,
    4893230.156291414
   ],
   "end_xy": [
    706563.234882179,
    4893221.586506409
   ]
  },
  "max_50m": {
   "gradient_pct": 21.470558518323628,
   "start_distance_m": 499.0,
   "end_distance_m": 549.0,
   "midpoint_distance_m": 524.0,
   "start_elevation_m": 408.28089115722423,
   "end_elevation_m": 419.01617041638605,
   "start_xy": [
    706517.0569609375,
    4893244.467520705
   ],
   "end_xy": [
    706561.3111129617,
    4893222.13341689
   ]
  },
  "max_100m": {
   "gradient_pct": 18.627408421726273,
   "start_distance_m": 457.0,
   "end_distance_m": 557.0,
   "midpoint_distance_m": 507.0,
   "start_elevation_m": 401.8742742824017,
   "end_elevation_m": 420.501682704128,
   "start_xy": [
    706485.526818907,
    4893272.177104607
   ],
   "end_xy": [
    706569.0071805628,
    4893219.949318255
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.799739030628643,
   "start_distance_m": 129.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 131.5,
   "start_elevation_m": 368.6878105707873,
   "end_elevation_m": 368.39782361925586,
   "start_xy": [
    706184.0364645494,
    4893380.630476058
   ],
   "end_xy": [
    706188.7432924168,
    4893378.943537148
   ]
  },
  "min_10m": {
   "gradient_pct": -3.888335243441361,
   "start_distance_m": 95.0,
   "end_distance_m": 105.0,
   "midpoint_distance_m": 100.0,
   "start_elevation_m": 369.15716161358176,
   "end_elevation_m": 368.7683280892376,
   "start_xy": [
    706152.121605668,
    4893392.347378729
   ],
   "end_xy": [
    706161.4457113,
    4893388.733375558
   ]
  },
  "min_20m": {
   "gradient_pct": -2.943453369347253,
   "start_distance_m": 89.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 99.0,
   "start_elevation_m": 369.2892427851277,
   "end_elevation_m": 368.7005521112583,
   "start_xy": [
    706146.5274036623,
    4893394.516454801
   ],
   "end_xy": [
    706165.2092649232,
    4893387.378546993
   ]
  },
  "min_25m": {
   "gradient_pct": -2.6357080581706214,
   "start_distance_m": 89.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 101.5,
   "start_elevation_m": 369.2892427851277,
   "end_elevation_m": 368.63031577058507,
   "start_xy": [
    706146.5274036623,
    4893394.516454801
   ],
   "end_xy": [
    706169.9160935652,
    4893385.691608362
   ]
  },
  "min_50m": {
   "gradient_pct": -1.7150602054204,
   "start_distance_m": 83.0,
   "end_distance_m": 133.0,
   "midpoint_distance_m": 108.0,
   "start_elevation_m": 369.2596585850723,
   "end_elevation_m": 368.4021284823621,
   "start_xy": [
    706140.9328653698,
    4893396.684664808
   ],
   "end_xy": [
    706187.802162566,
    4893379.281582415
   ]
  },
  "min_100m": {
   "gradient_pct": 0.27192982187199277,
   "start_distance_m": 78.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 369.42234820112947,
   "end_elevation_m": 369.69427802300146,
   "start_xy": [
    706136.2711550696,
    4893398.492551357
   ],
   "end_xy": [
    706228.9977921271,
    4893361.35404298
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.8455729776864,
   "start_distance_m": 542.0,
   "end_distance_m": 544.0,
   "midpoint_distance_m": 543.0,
   "start_elevation_m": 416.8918156045239,
   "end_elevation_m": 417.60872706407764,
   "start_xy": [
    706554.5828809564,
    4893224.064286785
   ],
   "end_xy": [
    706556.5010543462,
    4893223.49845755
   ]
  },
  "max_3m": {
   "gradient_pct": 34.21265484283064,
   "start_distance_m": 542.0,
   "end_distance_m": 545.0,
   "midpoint_distance_m": 543.5,
   "start_elevation_m": 416.8918156045239,
   "end_elevation_m": 417.91819524980883,
   "start_xy": [
    706554.5828809564,
    4893224.064286785
   ],
   "end_xy": [
    706557.4630673334,
    4893223.225453865
   ]
  }
 },
 "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": 0.899,
   "obstruction_max_height_m": 27.62,
   "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/vt/USGS_1M_18_x70y490_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-15T03:34:54+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/vermont-260821.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "retro-260914",
  "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, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
   "x70y490"
  ],
  "route_cut_m": 581.0,
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/VT_Statewide_2_A23",
   "ept_crs": "EPSG:3857",
   "station_coverage": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Orange",
  "county": "Vermont"
 }
}