{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.9621, -68.5670)",
 "slug": "discovered-lane-46-9621-68-5670",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.300088958805986,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 104.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 281.04893691923536,
   "end_elevation_m": 281.7549386984115,
   "min_gradient_pct": -2.6354521919245144
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.31272862191008,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 103.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 280.7255568397542,
   "end_elevation_m": 281.7549386984115,
   "min_gradient_pct": -1.7059825062309149
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.91348094273076,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 102.0,
   "end_distance_m": 107.0,
   "start_elevation_m": 280.42816531622805,
   "end_elevation_m": 282.0738393633646,
   "min_gradient_pct": -0.7664117331205489
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.705494746208615,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 279.8313738176028,
   "end_elevation_m": 282.90192329222367,
   "min_gradient_pct": 0.9947718769643643
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.616542109728357,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 92.0,
   "end_distance_m": 112.0,
   "start_elevation_m": 277.8881507261143,
   "end_elevation_m": 283.41145914806,
   "min_gradient_pct": 3.384250032778482
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.625070160403084,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 92.0,
   "end_distance_m": 117.0,
   "start_elevation_m": 277.8881507261143,
   "end_elevation_m": 284.5444182662151,
   "min_gradient_pct": 3.8384911136226947
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.558478026678245,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 279.8313738176028,
   "end_elevation_m": 291.61061283094193,
   "min_gradient_pct": 5.257165947474846
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.693447869325723,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 91.0,
   "end_distance_m": 191.0,
   "start_elevation_m": 277.65985767169093,
   "end_elevation_m": 299.35330554101665,
   "min_gradient_pct": 9.840318153518467
  }
 ],
 "shape": {
  "ascent_concentration": 0.393,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 142.0,
  "shape_class": "sustained"
 },
 "length_m": 201.8803511835194,
 "start_elevation_m": 269.99105566408434,
 "end_elevation_m": 299.82748048827784,
 "endpoint_gain_m": 29.8364248241935,
 "overall_gradient_pct": 14.779261403736458,
 "accumulated_ascent_m": 29.964363467168937,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.91348094273076,
   "start_distance_m": 102.0,
   "end_distance_m": 107.0,
   "midpoint_distance_m": 104.5,
   "start_elevation_m": 280.42816531622805,
   "end_elevation_m": 282.0738393633646,
   "start_xy": [
    533004.4200306631,
    5201120.733568524
   ],
   "end_xy": [
    533007.3805713819,
    5201124.762861099
   ]
  },
  "max_10m": {
   "gradient_pct": 30.705494746208615,
   "start_distance_m": 100.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 105.0,
   "start_elevation_m": 279.8313738176028,
   "end_elevation_m": 282.90192329222367,
   "start_xy": [
    533003.2358143756,
    5201119.121851495
   ],
   "end_xy": [
    533009.1568958132,
    5201127.180436644
   ]
  },
  "max_20m": {
   "gradient_pct": 27.616542109728357,
   "start_distance_m": 92.0,
   "end_distance_m": 112.0,
   "midpoint_distance_m": 102.0,
   "start_elevation_m": 277.8881507261143,
   "end_elevation_m": 283.41145914806,
   "start_xy": [
    532998.4989492255,
    5201112.674983375
   ],
   "end_xy": [
    533010.3411121006,
    5201128.792153673
   ]
  },
  "max_25m": {
   "gradient_pct": 26.625070160403084,
   "start_distance_m": 92.0,
   "end_distance_m": 117.0,
   "midpoint_distance_m": 104.5,
   "start_elevation_m": 277.8881507261143,
   "end_elevation_m": 284.5444182662151,
   "start_xy": [
    532998.4989492255,
    5201112.674983375
   ],
   "end_xy": [
    533013.3016528195,
    5201132.821446248
   ]
  },
  "max_50m": {
   "gradient_pct": 23.558478026678245,
   "start_distance_m": 100.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 125.0,
   "start_elevation_m": 279.8313738176028,
   "end_elevation_m": 291.61061283094193,
   "start_xy": [
    533003.2358143756,
    5201119.121851495
   ],
   "end_xy": [
    533032.8412215634,
    5201159.414777241
   ]
  },
  "max_100m": {
   "gradient_pct": 21.693447869325723,
   "start_distance_m": 91.0,
   "end_distance_m": 191.0,
   "midpoint_distance_m": 141.0,
   "start_elevation_m": 277.65985767169093,
   "end_elevation_m": 299.35330554101665,
   "start_xy": [
    532997.9068410818,
    5201111.86912486
   ],
   "end_xy": [
    533057.1176554573,
    5201192.454976354
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.7664117331205489,
   "start_distance_m": 196.0,
   "end_distance_m": 201.0,
   "midpoint_distance_m": 198.5,
   "start_elevation_m": 299.8930990736914,
   "end_elevation_m": 299.8547784870354,
   "start_xy": [
    533060.0781961761,
    5201196.484268928
   ],
   "end_xy": [
    533063.038736895,
    5201200.513561503
   ]
  },
  "min_10m": {
   "gradient_pct": 0.9947718769643643,
   "start_distance_m": 4.0,
   "end_distance_m": 14.0,
   "midpoint_distance_m": 9.0,
   "start_elevation_m": 270.1857406967301,
   "end_elevation_m": 270.2852178844265,
   "start_xy": [
    532946.393432575,
    5201041.75943406
   ],
   "end_xy": [
    532952.3145140127,
    5201049.818019209
   ]
  },
  "min_20m": {
   "gradient_pct": 3.384250032778482,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 269.99105566408434,
   "end_elevation_m": 270.66790567064004,
   "start_xy": [
    532944.025,
    5201038.536
   ],
   "end_xy": [
    532955.8671628751,
    5201054.653170299
   ]
  },
  "min_25m": {
   "gradient_pct": 3.8384911136226947,
   "start_distance_m": 4.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 16.5,
   "start_elevation_m": 270.1857406967301,
   "end_elevation_m": 271.14536347513575,
   "start_xy": [
    532946.393432575,
    5201041.75943406
   ],
   "end_xy": [
    532961.1961361689,
    5201061.905896934
   ]
  },
  "min_50m": {
   "gradient_pct": 5.257165947474846,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 269.99105566408434,
   "end_elevation_m": 272.61963863782177,
   "start_xy": [
    532944.025,
    5201038.536
   ],
   "end_xy": [
    532973.6304071879,
    5201078.828925747
   ]
  },
  "min_100m": {
   "gradient_pct": 9.840318153518467,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 269.99105566408434,
   "end_elevation_m": 279.8313738176028,
   "start_xy": [
    532944.025,
    5201038.536
   ],
   "end_xy": [
    533003.2358143756,
    5201119.121851495
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.300088958805986,
   "start_distance_m": 104.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 105.0,
   "start_elevation_m": 281.04893691923536,
   "end_elevation_m": 281.7549386984115,
   "start_xy": [
    533005.6042469506,
    5201122.3452855535
   ],
   "end_xy": [
    533006.7884632382,
    5201123.957002584
   ]
  },
  "max_3m": {
   "gradient_pct": 34.31272862191008,
   "start_distance_m": 103.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 104.5,
   "start_elevation_m": 280.7255568397542,
   "end_elevation_m": 281.7549386984115,
   "start_xy": [
    533005.0121388069,
    5201121.539427039
   ],
   "end_xy": [
    533006.7884632382,
    5201123.957002584
   ]
  }
 },
 "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": {
  "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/me/USGS_1M_19_x53y521_ME_CrownofMaine_2018_A18.tif"
  ],
  "calculated_at": "2026-08-24T20:42:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/maine-2026-08-22.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "redo-me-1-260824",
  "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_CrownofMaine_2018_A18 (collected 2018)",
  "elevation_tile_ids": [
   "x53y521"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 15.0% over 200 m (Terrain 50), gain 30.1 m over 202 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (NE wave 1, 2026-08-25): clean-steep,qualified-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Winterville",
  "county": "Maine"
 }
}