{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.0061, -72.4685)",
 "slug": "discovered-lane-44-0061-72-4685",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.493754815737134,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 477.0,
   "end_distance_m": 479.0,
   "start_elevation_m": 337.3793823523275,
   "end_elevation_m": 338.10925744864227,
   "min_gradient_pct": -24.23447178067022,
   "suppressed_max_gradient_pct": 61.43514929947855,
   "suppressed_location_m": [
    294.0,
    296.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.513907280830836,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 477.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 337.3793823523275,
   "end_elevation_m": 338.41479957075245,
   "min_gradient_pct": -23.046182037338287,
   "suppressed_max_gradient_pct": 53.22098003902246,
   "suppressed_location_m": [
    645.0,
    648.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.59369076740063,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 475.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 336.8351150323824,
   "end_elevation_m": 338.41479957075245,
   "min_gradient_pct": -20.57925507200366,
   "suppressed_max_gradient_pct": 52.68323370263715,
   "suppressed_location_m": [
    644.0,
    649.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.93329843185188,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 474.0,
   "end_distance_m": 484.0,
   "start_elevation_m": 336.6106953120841,
   "end_elevation_m": 339.2040251552693,
   "min_gradient_pct": -15.534133154370124,
   "suppressed_max_gradient_pct": 45.23812257531972,
   "suppressed_location_m": [
    642.0,
    652.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.691339594675924,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 464.0,
   "end_distance_m": 484.0,
   "start_elevation_m": 335.0657572363341,
   "end_elevation_m": 339.2040251552693,
   "min_gradient_pct": -9.426453756175022,
   "suppressed_max_gradient_pct": 34.32112668100274,
   "suppressed_location_m": [
    637.0,
    657.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.17516056691693,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 542.0,
   "end_distance_m": 567.0,
   "start_elevation_m": 347.61607108086196,
   "end_elevation_m": 352.6598612225912,
   "min_gradient_pct": -8.886756641899638,
   "suppressed_max_gradient_pct": 30.370608968027682,
   "suppressed_location_m": [
    632.0,
    657.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.78932644988447,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 519.0,
   "end_distance_m": 569.0,
   "start_elevation_m": 343.6630421348583,
   "end_elevation_m": 353.05770535980054,
   "min_gradient_pct": -3.0438939429193397,
   "suppressed_max_gradient_pct": 26.888747506000755,
   "suppressed_location_m": [
    238.0,
    288.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.26612736708273,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 385.0,
   "end_distance_m": 485.0,
   "start_elevation_m": 321.02819928393865,
   "end_elevation_m": 339.2943266510214,
   "min_gradient_pct": 4.918607907864782,
   "suppressed_max_gradient_pct": 22.689684758675813,
   "suppressed_location_m": [
    184.0,
    284.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.316,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 291.0,
  "shape_class": "sustained"
 },
 "length_m": 948.0191095246412,
 "start_elevation_m": 264.42854417480214,
 "end_elevation_m": 398.51421325147857,
 "endpoint_gain_m": 134.08566907667642,
 "overall_gradient_pct": 14.143772813177796,
 "accumulated_ascent_m": 137.70636073936646,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.59369076740063,
   "start_distance_m": 475.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 477.5,
   "start_elevation_m": 336.8351150323824,
   "end_elevation_m": 338.41479957075245,
   "start_xy": [
    703367.1428437487,
    4875568.916953844
   ],
   "end_xy": [
    703362.2738373842,
    4875569.785168473
   ]
  },
  "max_10m": {
   "gradient_pct": 25.93329843185188,
   "start_distance_m": 474.0,
   "end_distance_m": 484.0,
   "midpoint_distance_m": 479.0,
   "start_elevation_m": 336.6106953120841,
   "end_elevation_m": 339.2040251552693,
   "start_xy": [
    703368.1428418179,
    4875568.918907683
   ],
   "end_xy": [
    703358.4818304252,
    4875571.058227948
   ]
  },
  "max_20m": {
   "gradient_pct": 20.691339594675924,
   "start_distance_m": 464.0,
   "end_distance_m": 484.0,
   "midpoint_distance_m": 474.0,
   "start_elevation_m": 335.0657572363341,
   "end_elevation_m": 339.2040251552693,
   "start_xy": [
    703378.142829318,
    4875568.933907659
   ],
   "end_xy": [
    703358.4818304252,
    4875571.058227948
   ]
  },
  "max_25m": {
   "gradient_pct": 20.17516056691693,
   "start_distance_m": 542.0,
   "end_distance_m": 567.0,
   "midpoint_distance_m": 554.5,
   "start_elevation_m": 347.61607108086196,
   "end_elevation_m": 352.6598612225912,
   "start_xy": [
    703306.3389542535,
    4875595.597614943
   ],
   "end_xy": [
    703287.065032114,
    4875611.50205746
   ]
  },
  "max_50m": {
   "gradient_pct": 18.78932644988447,
   "start_distance_m": 519.0,
   "end_distance_m": 569.0,
   "midpoint_distance_m": 544.0,
   "start_elevation_m": 343.6630421348583,
   "end_elevation_m": 353.05770535980054,
   "start_xy": [
    703325.9906473783,
    4875583.8772896975
   ],
   "end_xy": [
    703285.5915989836,
    4875612.854460634
   ]
  },
  "max_100m": {
   "gradient_pct": 18.26612736708273,
   "start_distance_m": 385.0,
   "end_distance_m": 485.0,
   "midpoint_distance_m": 435.0,
   "start_elevation_m": 321.02819928393865,
   "end_elevation_m": 339.2943266510214,
   "start_xy": [
    703453.8846189472,
    4875556.035387645
   ],
   "end_xy": [
    703357.5340335754,
    4875571.377102662
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -20.57925507200366,
   "start_distance_m": 914.0,
   "end_distance_m": 919.0,
   "midpoint_distance_m": 916.5,
   "start_elevation_m": 400.20341874322855,
   "end_elevation_m": 399.17445598962837,
   "start_xy": [
    702975.4125025615,
    4875677.544125213
   ],
   "end_xy": [
    702970.5993562626,
    4875676.3131961
   ]
  },
  "min_10m": {
   "gradient_pct": -15.534133154370124,
   "start_distance_m": 913.0,
   "end_distance_m": 923.0,
   "midpoint_distance_m": 918.0,
   "start_elevation_m": 400.3229276558792,
   "end_elevation_m": 398.7695143404422,
   "start_xy": [
    702976.4090543074,
    4875677.627098804
   ],
   "end_xy": [
    702966.824426988,
    4875674.99035621
   ]
  },
  "min_20m": {
   "gradient_pct": -9.426453756175022,
   "start_distance_m": 913.0,
   "end_distance_m": 933.0,
   "midpoint_distance_m": 923.0,
   "start_elevation_m": 400.3229276558792,
   "end_elevation_m": 398.4376369046442,
   "start_xy": [
    702976.4090543074,
    4875677.627098804
   ],
   "end_xy": [
    702957.4036345092,
    4875671.637834995
   ]
  },
  "min_25m": {
   "gradient_pct": -8.886756641899638,
   "start_distance_m": 911.0,
   "end_distance_m": 936.0,
   "midpoint_distance_m": 923.5,
   "start_elevation_m": 400.440676571774,
   "end_elevation_m": 398.2189874112991,
   "start_xy": [
    702978.4020694635,
    4875677.794100066
   ],
   "end_xy": [
    702954.6005676453,
    4875670.568809509
   ]
  },
  "min_50m": {
   "gradient_pct": -3.0438939429193397,
   "start_distance_m": 898.0,
   "end_distance_m": 948.0,
   "midpoint_distance_m": 923.0,
   "start_elevation_m": 400.03732975018283,
   "end_elevation_m": 398.51538277872316,
   "start_xy": [
    702991.2897099713,
    4875677.090610796
   ],
   "end_xy": [
    702944.5968102388,
    4875664.178076041
   ]
  },
  "min_100m": {
   "gradient_pct": 4.918607907864782,
   "start_distance_m": 848.0,
   "end_distance_m": 948.0,
   "midpoint_distance_m": 898.0,
   "start_elevation_m": 393.5967748708584,
   "end_elevation_m": 398.51538277872316,
   "start_xy": [
    703034.7441078583,
    4875653.274079616
   ],
   "end_xy": [
    702944.5968102388,
    4875664.178076041
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.493754815737134,
   "start_distance_m": 477.0,
   "end_distance_m": 479.0,
   "midpoint_distance_m": 478.0,
   "start_elevation_m": 337.3793823523275,
   "end_elevation_m": 338.10925744864227,
   "start_xy": [
    703365.1439607104,
    4875568.924081333
   ],
   "end_xy": [
    703363.2216342966,
    4875569.466293944
   ]
  },
  "max_3m": {
   "gradient_pct": 34.513907280830836,
   "start_distance_m": 477.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 478.5,
   "start_elevation_m": 337.3793823523275,
   "end_elevation_m": 338.41479957075245,
   "start_xy": [
    703365.1439607104,
    4875568.924081333
   ],
   "end_xy": [
    703362.2738373842,
    4875569.785168473
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.006,
   "windows_resited": [
    2.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.257,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.288,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 233.0,
     "end_m": 258.0,
     "raw_pct": 23.6,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 238.0,
     "end_m": 258.0,
     "raw_pct": 24.31,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.736,
   "obstruction_max_height_m": 29.78,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    180.0,
    220.0
   ],
   [
    231.0,
    310.0
   ],
   [
    640.0,
    760.0
   ],
   [
    770.0,
    800.0
   ]
  ],
  "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_x70y488_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-11T22:46:55+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": "texture-us-vt-260911",
  "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": [
   "x70y488"
  ],
  "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": 0.998,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Chelsea",
  "county": "Vermont"
 }
}