{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.0942, -72.4274)",
 "slug": "discovered-lane-44-0942-72-4274",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.20653055783396,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 408.0,
   "end_distance_m": 410.0,
   "start_elevation_m": 483.506751320458,
   "end_elevation_m": 484.1708819316147,
   "min_gradient_pct": -15.982197384442998
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.43287864441883,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 407.0,
   "end_distance_m": 410.0,
   "start_elevation_m": 483.22789557228214,
   "end_elevation_m": 484.1708819316147,
   "min_gradient_pct": -12.772629538733327
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.334065641687403,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 405.0,
   "end_distance_m": 410.0,
   "start_elevation_m": 482.75417864953033,
   "end_elevation_m": 484.1708819316147,
   "min_gradient_pct": -9.49073947593206
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.982009649912698,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 401.0,
   "end_distance_m": 411.0,
   "start_elevation_m": 481.8787976589347,
   "end_elevation_m": 484.37699862392594,
   "min_gradient_pct": -8.25903946508447
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.52594878594209,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 391.0,
   "end_distance_m": 411.0,
   "start_elevation_m": 479.8718088667375,
   "end_elevation_m": 484.37699862392594,
   "min_gradient_pct": -6.773112332625146
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.82221337571673,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 390.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 479.6706122861799,
   "end_elevation_m": 485.1261656301091,
   "min_gradient_pct": -6.207438601982631
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.390004756410804,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 377.0,
   "end_distance_m": 427.0,
   "start_elevation_m": 477.1617470051833,
   "end_elevation_m": 487.3567493833887,
   "min_gradient_pct": -4.756496463653775
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.78616451039636,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 371.0,
   "end_distance_m": 471.0,
   "start_elevation_m": 476.2795018145483,
   "end_elevation_m": 494.0656663249447,
   "min_gradient_pct": -3.1849641656244785
  }
 ],
 "shape": {
  "ascent_concentration": 0.525,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 225.0,
  "shape_class": "stepped"
 },
 "length_m": 1527.7053799448831,
 "start_elevation_m": 449.5241958293731,
 "end_elevation_m": 543.1889587793326,
 "endpoint_gain_m": 93.66476294995942,
 "overall_gradient_pct": 6.131075021372163,
 "accumulated_ascent_m": 100.09217260723204,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.334065641687403,
   "start_distance_m": 405.0,
   "end_distance_m": 410.0,
   "midpoint_distance_m": 407.5,
   "start_elevation_m": 482.75417864953033,
   "end_elevation_m": 484.1708819316147,
   "start_xy": [
    706204.2941171625,
    4885016.009514445
   ],
   "end_xy": [
    706207.9459323093,
    4885012.594218538
   ]
  },
  "max_10m": {
   "gradient_pct": 24.982009649912698,
   "start_distance_m": 401.0,
   "end_distance_m": 411.0,
   "midpoint_distance_m": 406.0,
   "start_elevation_m": 481.8787976589347,
   "end_elevation_m": 484.37699862392594,
   "start_xy": [
    706201.372665045,
    4885018.741751172
   ],
   "end_xy": [
    706208.6762953385,
    4885011.911159357
   ]
  },
  "max_20m": {
   "gradient_pct": 22.52594878594209,
   "start_distance_m": 391.0,
   "end_distance_m": 411.0,
   "midpoint_distance_m": 401.0,
   "start_elevation_m": 479.8718088667375,
   "end_elevation_m": 484.37699862392594,
   "start_xy": [
    706194.0690347514,
    4885025.572342986
   ],
   "end_xy": [
    706208.6762953385,
    4885011.911159357
   ]
  },
  "max_25m": {
   "gradient_pct": 21.82221337571673,
   "start_distance_m": 390.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 402.5,
   "start_elevation_m": 479.6706122861799,
   "end_elevation_m": 485.1261656301091,
   "start_xy": [
    706193.338671722,
    4885026.255402167
   ],
   "end_xy": [
    706211.597747456,
    4885009.178922632
   ]
  },
  "max_50m": {
   "gradient_pct": 20.390004756410804,
   "start_distance_m": 377.0,
   "end_distance_m": 427.0,
   "midpoint_distance_m": 402.0,
   "start_elevation_m": 477.1617470051833,
   "end_elevation_m": 487.3567493833887,
   "start_xy": [
    706184.0041653507,
    4885035.298423599
   ],
   "end_xy": [
    706220.3621038084,
    4885000.982212454
   ]
  },
  "max_100m": {
   "gradient_pct": 17.78616451039636,
   "start_distance_m": 371.0,
   "end_distance_m": 471.0,
   "midpoint_distance_m": 421.0,
   "start_elevation_m": 476.2795018145483,
   "end_elevation_m": 494.0656663249447,
   "start_xy": [
    706179.8241969442,
    4885039.602824152
   ],
   "end_xy": [
    706252.4980771003,
    4884970.927608471
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.49073947593206,
   "start_distance_m": 1240.0,
   "end_distance_m": 1245.0,
   "midpoint_distance_m": 1242.5,
   "start_elevation_m": 529.3496217044072,
   "end_elevation_m": 528.8750847306106,
   "start_xy": [
    706941.4688120418,
    4884843.223523188
   ],
   "end_xy": [
    706946.3411224775,
    4884844.346283633
   ]
  },
  "min_10m": {
   "gradient_pct": -8.25903946508447,
   "start_distance_m": 1235.0,
   "end_distance_m": 1245.0,
   "midpoint_distance_m": 1240.0,
   "start_elevation_m": 529.7009886771191,
   "end_elevation_m": 528.8750847306106,
   "start_xy": [
    706936.596501606,
    4884842.100762743
   ],
   "end_xy": [
    706946.3411224775,
    4884844.346283633
   ]
  },
  "min_20m": {
   "gradient_pct": -6.773112332625146,
   "start_distance_m": 1224.0,
   "end_distance_m": 1244.0,
   "midpoint_distance_m": 1234.0,
   "start_elevation_m": 530.263851559731,
   "end_elevation_m": 528.909229093206,
   "start_xy": [
    706925.8774186474,
    4884839.6306897625
   ],
   "end_xy": [
    706945.3666603904,
    4884844.121731544
   ]
  },
  "min_25m": {
   "gradient_pct": -6.207438601982631,
   "start_distance_m": 1221.0,
   "end_distance_m": 1246.0,
   "midpoint_distance_m": 1233.5,
   "start_elevation_m": 530.4126216338522,
   "end_elevation_m": 528.8607619833565,
   "start_xy": [
    706922.954032386,
    4884838.957033495
   ],
   "end_xy": [
    706947.3155845647,
    4884844.570835723
   ]
  },
  "min_50m": {
   "gradient_pct": -4.756496463653775,
   "start_distance_m": 1222.0,
   "end_distance_m": 1272.0,
   "midpoint_distance_m": 1247.0,
   "start_elevation_m": 530.3632566503096,
   "end_elevation_m": 527.9850084184827,
   "start_xy": [
    706923.9284944731,
    4884839.181585585
   ],
   "end_xy": [
    706972.6515988306,
    4884850.409190038
   ]
  },
  "min_100m": {
   "gradient_pct": -3.1849641656244785,
   "start_distance_m": 1172.0,
   "end_distance_m": 1272.0,
   "midpoint_distance_m": 1222.0,
   "start_elevation_m": 531.1699725841072,
   "end_elevation_m": 527.9850084184827,
   "start_xy": [
    706875.2053901156,
    4884827.95398113
   ],
   "end_xy": [
    706972.6515988306,
    4884850.409190038
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.20653055783396,
   "start_distance_m": 408.0,
   "end_distance_m": 410.0,
   "midpoint_distance_m": 409.0,
   "start_elevation_m": 483.506751320458,
   "end_elevation_m": 484.1708819316147,
   "start_xy": [
    706206.4852062506,
    4885013.960336901
   ],
   "end_xy": [
    706207.9459323093,
    4885012.594218538
   ]
  },
  "max_3m": {
   "gradient_pct": 31.43287864441883,
   "start_distance_m": 407.0,
   "end_distance_m": 410.0,
   "midpoint_distance_m": 408.5,
   "start_elevation_m": 483.22789557228214,
   "end_elevation_m": 484.1708819316147,
   "start_xy": [
    706205.7548432212,
    4885014.643396083
   ],
   "end_xy": [
    706207.9459323093,
    4885012.594218538
   ]
  }
 },
 "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": 0.791,
   "obstruction_max_height_m": 29.14,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "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/vt/USGS_1M_18_x70y489_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-04T23:56:32+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": "hunt-wave2-260905",
  "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": [
   "x70y489"
  ],
  "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
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Washington",
  "county": "Vermont"
 }
}