{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.8960, -70.9330)",
 "slug": "discovered-lane-43-8960-70-9330",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.87885225218895,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 320.0,
   "end_distance_m": 322.0,
   "start_elevation_m": 337.8588207622372,
   "end_elevation_m": 338.736397807281,
   "min_gradient_pct": -3.1140596459067638
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.10115845517824,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 319.0,
   "end_distance_m": 322.0,
   "start_elevation_m": 337.47336305362563,
   "end_elevation_m": 338.736397807281,
   "min_gradient_pct": -1.265386675256271
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 40.83003131398186,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 317.0,
   "end_distance_m": 322.0,
   "start_elevation_m": 336.6948962415819,
   "end_elevation_m": 338.736397807281,
   "min_gradient_pct": -0.541595559234338
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 36.84260172071902,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 316.0,
   "end_distance_m": 326.0,
   "start_elevation_m": 336.3077864425897,
   "end_elevation_m": 339.9920466146616,
   "min_gradient_pct": 3.018163092791042
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 33.228152002250226,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 315.0,
   "end_distance_m": 335.0,
   "start_elevation_m": 335.9525468997243,
   "end_elevation_m": 342.59817730017437,
   "min_gradient_pct": 6.680641830584193
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 31.722290976711065,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 78.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 289.9336577500753,
   "end_elevation_m": 297.8642304942531,
   "min_gradient_pct": 8.380061885311306
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 27.93828643902941,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 78.0,
   "end_distance_m": 128.0,
   "start_elevation_m": 289.9336577500753,
   "end_elevation_m": 303.90280096959003,
   "min_gradient_pct": 13.483268246842272
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 23.594472448634974,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 73.0,
   "end_distance_m": 173.0,
   "start_elevation_m": 288.95981887499795,
   "end_elevation_m": 312.5542913236329,
   "min_gradient_pct": 14.807065518875504
  }
 ],
 "shape": {
  "ascent_concentration": 0.302,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 81.0,
  "shape_class": "sustained"
 },
 "length_m": 355.662106523205,
 "start_elevation_m": 275.97610820377747,
 "end_elevation_m": 346.9454526250206,
 "endpoint_gain_m": 70.96934442124314,
 "overall_gradient_pct": 19.954148367113934,
 "accumulated_ascent_m": 71.11230472449,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 40.83003131398186,
   "start_distance_m": 317.0,
   "end_distance_m": 322.0,
   "midpoint_distance_m": 319.5,
   "start_elevation_m": 336.6948962415819,
   "end_elevation_m": 338.736397807281,
   "start_xy": [
    344713.12192715966,
    4862156.569034886
   ],
   "end_xy": [
    344717.63219152414,
    4862154.4109082725
   ]
  },
  "max_10m": {
   "gradient_pct": 36.84260172071902,
   "start_distance_m": 316.0,
   "end_distance_m": 326.0,
   "midpoint_distance_m": 321.0,
   "start_elevation_m": 336.3077864425897,
   "end_elevation_m": 339.9920466146616,
   "start_xy": [
    344712.2200299701,
    4862157.000985647
   ],
   "end_xy": [
    344721.24016949075,
    4862152.683918825
   ]
  },
  "max_20m": {
   "gradient_pct": 33.228152002250226,
   "start_distance_m": 315.0,
   "end_distance_m": 335.0,
   "midpoint_distance_m": 325.0,
   "start_elevation_m": 335.9525468997243,
   "end_elevation_m": 342.59817730017437,
   "start_xy": [
    344711.31813278055,
    4862157.432936407
   ],
   "end_xy": [
    344729.3584118214,
    4862148.798802763
   ]
  },
  "max_25m": {
   "gradient_pct": 31.722290976711065,
   "start_distance_m": 78.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 90.5,
   "start_elevation_m": 289.9336577500753,
   "end_elevation_m": 297.8642304942531,
   "start_xy": [
    344497.54011912603,
    4862259.745943079
   ],
   "end_xy": [
    344520.0908489122,
    4862248.954072194
   ]
  },
  "max_50m": {
   "gradient_pct": 27.93828643902941,
   "start_distance_m": 78.0,
   "end_distance_m": 128.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 289.9336577500753,
   "end_elevation_m": 303.90280096959003,
   "start_xy": [
    344497.54011912603,
    4862259.745943079
   ],
   "end_xy": [
    344542.6410031748,
    4862238.160998479
   ]
  },
  "max_100m": {
   "gradient_pct": 23.594472448634974,
   "start_distance_m": 73.0,
   "end_distance_m": 173.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 288.95981887499795,
   "end_elevation_m": 312.5542913236329,
   "start_xy": [
    344493.0302439185,
    4862261.904883179
   ],
   "end_xy": [
    344583.23201211885,
    4862218.734994196
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.541595559234338,
   "start_distance_m": 55.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 57.5,
   "start_elevation_m": 287.59358964660464,
   "end_elevation_m": 287.5665098686429,
   "start_xy": [
    344476.79375925637,
    4862269.6751153
   ],
   "end_xy": [
    344481.30402362085,
    4862267.516988687
   ]
  },
  "min_10m": {
   "gradient_pct": 3.018163092791042,
   "start_distance_m": 55.0,
   "end_distance_m": 65.0,
   "midpoint_distance_m": 60.0,
   "start_elevation_m": 287.59358964660464,
   "end_elevation_m": 287.89540595588375,
   "start_xy": [
    344476.79375925637,
    4862269.6751153
   ],
   "end_xy": [
    344485.813898777,
    4862265.358048479
   ]
  },
  "min_20m": {
   "gradient_pct": 6.680641830584193,
   "start_distance_m": 50.0,
   "end_distance_m": 70.0,
   "midpoint_distance_m": 60.0,
   "start_elevation_m": 287.1835863688975,
   "end_elevation_m": 288.51971473501436,
   "start_xy": [
    344472.2838841002,
    4862271.8340555085
   ],
   "end_xy": [
    344490.3241631415,
    4862263.199921866
   ]
  },
  "min_25m": {
   "gradient_pct": 8.380061885311306,
   "start_distance_m": 48.0,
   "end_distance_m": 73.0,
   "midpoint_distance_m": 60.5,
   "start_elevation_m": 286.8648034036701,
   "end_elevation_m": 288.95981887499795,
   "start_xy": [
    344470.4797005128,
    4862272.697143435
   ],
   "end_xy": [
    344493.0302439185,
    4862261.904883179
   ]
  },
  "min_50m": {
   "gradient_pct": 13.483268246842272,
   "start_distance_m": 234.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 259.0,
   "start_elevation_m": 322.55027850926297,
   "end_elevation_m": 329.2919126326841,
   "start_xy": [
    344638.2549328999,
    4862192.401032062
   ],
   "end_xy": [
    344683.3558169501,
    4862170.816087466
   ]
  },
  "min_100m": {
   "gradient_pct": 14.807065518875504,
   "start_distance_m": 184.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 234.0,
   "start_elevation_m": 314.4848471138086,
   "end_elevation_m": 329.2919126326841,
   "start_xy": [
    344593.1540488287,
    4862213.985976614
   ],
   "end_xy": [
    344683.3558169501,
    4862170.816087466
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.87885225218895,
   "start_distance_m": 320.0,
   "end_distance_m": 322.0,
   "midpoint_distance_m": 321.0,
   "start_elevation_m": 337.8588207622372,
   "end_elevation_m": 338.736397807281,
   "start_xy": [
    344715.8280079401,
    4862155.273996206
   ],
   "end_xy": [
    344717.63219152414,
    4862154.4109082725
   ]
  },
  "max_3m": {
   "gradient_pct": 42.10115845517824,
   "start_distance_m": 319.0,
   "end_distance_m": 322.0,
   "midpoint_distance_m": 320.5,
   "start_elevation_m": 337.47336305362563,
   "end_elevation_m": 338.736397807281,
   "start_xy": [
    344714.9261107471,
    4862155.70594696
   ],
   "end_xy": [
    344717.63219152414,
    4862154.4109082725
   ]
  }
 },
 "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": 0.866,
   "obstruction_max_height_m": 19.03,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/me/USGS_1M_19_x34y487_ME_SouthCentral_B22.tif"
  ],
  "calculated_at": "2026-09-03T14:56:46+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/discovered-lane-43-8960-70-9330/discovered-lane-43-8960-70-9330.geojson",
  "run_id": "canopy-all-260903",
  "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, ME_SouthCentral_B22 (collected 2022)",
  "elevation_tile_ids": [
   "x34y487"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_ME_NRCS_Lot4_2013_LAS_2015",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.992,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Brownfield",
  "county": "Maine"
 }
}