{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.9964, -70.2778)",
 "slug": "discovered-lane-43-9964-70-2778",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 47.064614829047,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 32.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 113.75696837813832,
   "end_elevation_m": 114.69826067471926,
   "min_gradient_pct": -20.11416790791145
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.69700405420025,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 31.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 113.41735055309326,
   "end_elevation_m": 114.69826067471926,
   "min_gradient_pct": -19.282384733326314
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 37.111662888496255,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 29.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 112.84267753029445,
   "end_elevation_m": 114.69826067471926,
   "min_gradient_pct": -9.781703140275795
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.5216837240782,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 24.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 111.64609230231144,
   "end_elevation_m": 114.69826067471926,
   "min_gradient_pct": -1.3232073232998687
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.931933595607347,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 14.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 109.7118739555978,
   "end_elevation_m": 114.69826067471926,
   "min_gradient_pct": 5.633827580403974
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.42613828882264,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 9.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 108.8417261025136,
   "end_elevation_m": 114.69826067471926,
   "min_gradient_pct": 6.423946449220125
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.940563213384166,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 10.0,
   "end_distance_m": 60.0,
   "start_elevation_m": 108.96357416118047,
   "end_elevation_m": 117.43385576787256,
   "min_gradient_pct": 8.591222987484286
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.34396346481573,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 10.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 108.96357416118047,
   "end_elevation_m": 123.3075376259962,
   "min_gradient_pct": 11.107161344167908
  }
 ],
 "shape": {
  "ascent_concentration": 0.325,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 72.0,
  "shape_class": "sustained"
 },
 "length_m": 223.2133636702569,
 "start_elevation_m": 107.91478549814687,
 "end_elevation_m": 135.89116123324612,
 "endpoint_gain_m": 27.976375735099253,
 "overall_gradient_pct": 12.533468102038684,
 "accumulated_ascent_m": 28.923807539243057,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 37.111662888496255,
   "start_distance_m": 29.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 31.5,
   "start_elevation_m": 112.84267753029445,
   "end_elevation_m": 114.69826067471926,
   "start_xy": [
    397521.3805092855,
    4872263.016807995
   ],
   "end_xy": [
    397516.4588729554,
    4872262.135050752
   ]
  },
  "max_10m": {
   "gradient_pct": 30.5216837240782,
   "start_distance_m": 24.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 29.0,
   "start_elevation_m": 111.64609230231144,
   "end_elevation_m": 114.69826067471926,
   "start_xy": [
    397526.30214561557,
    4872263.8985652365
   ],
   "end_xy": [
    397516.4588729554,
    4872262.135050752
   ]
  },
  "max_20m": {
   "gradient_pct": 24.931933595607347,
   "start_distance_m": 14.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 24.0,
   "start_elevation_m": 109.7118739555978,
   "end_elevation_m": 114.69826067471926,
   "start_xy": [
    397536.14541827573,
    4872265.662079722
   ],
   "end_xy": [
    397516.4588729554,
    4872262.135050752
   ]
  },
  "max_25m": {
   "gradient_pct": 23.42613828882264,
   "start_distance_m": 9.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 21.5,
   "start_elevation_m": 108.8417261025136,
   "end_elevation_m": 114.69826067471926,
   "start_xy": [
    397541.0670546058,
    4872266.543836964
   ],
   "end_xy": [
    397516.4588729554,
    4872262.135050752
   ]
  },
  "max_50m": {
   "gradient_pct": 16.940563213384166,
   "start_distance_m": 10.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 35.0,
   "start_elevation_m": 108.96357416118047,
   "end_elevation_m": 117.43385576787256,
   "start_xy": [
    397540.0827273398,
    4872266.367485516
   ],
   "end_xy": [
    397490.86636403896,
    4872257.5499130925
   ]
  },
  "max_100m": {
   "gradient_pct": 14.34396346481573,
   "start_distance_m": 10.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 60.0,
   "start_elevation_m": 108.96357416118047,
   "end_elevation_m": 123.3075376259962,
   "start_xy": [
    397540.0827273398,
    4872266.367485516
   ],
   "end_xy": [
    397441.6500007381,
    4872248.732340669
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.781703140275795,
   "start_distance_m": 110.0,
   "end_distance_m": 115.0,
   "midpoint_distance_m": 112.5,
   "start_elevation_m": 123.3075376259962,
   "end_elevation_m": 122.81845246898241,
   "start_xy": [
    397441.6500007381,
    4872248.732340669
   ],
   "end_xy": [
    397436.728364408,
    4872247.850583427
   ]
  },
  "min_10m": {
   "gradient_pct": -1.3232073232998687,
   "start_distance_m": 211.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 216.0,
   "start_elevation_m": 136.10449486981858,
   "end_elevation_m": 135.9721741374886,
   "start_xy": [
    397342.23294687044,
    4872230.920844374
   ],
   "end_xy": [
    397332.3896742103,
    4872229.157329889
   ]
  },
  "min_20m": {
   "gradient_pct": 5.633827580403974,
   "start_distance_m": 70.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 80.0,
   "start_elevation_m": 118.7256265719119,
   "end_elevation_m": 119.8523920879927,
   "start_xy": [
    397481.0230913788,
    4872255.786398607
   ],
   "end_xy": [
    397461.3365460585,
    4872252.259369638
   ]
  },
  "min_25m": {
   "gradient_pct": 6.423946449220125,
   "start_distance_m": 69.0,
   "end_distance_m": 94.0,
   "midpoint_distance_m": 81.5,
   "start_elevation_m": 118.63572377113601,
   "end_elevation_m": 120.24171038344105,
   "start_xy": [
    397482.0074186448,
    4872255.962750056
   ],
   "end_xy": [
    397457.3992369944,
    4872251.553963845
   ]
  },
  "min_50m": {
   "gradient_pct": 8.591222987484286,
   "start_distance_m": 173.0,
   "end_distance_m": 223.0,
   "midpoint_distance_m": 198.0,
   "start_elevation_m": 131.60543285676349,
   "end_elevation_m": 135.90104435050563,
   "start_xy": [
    397379.63738297904,
    4872237.622199415
   ],
   "end_xy": [
    397330.42101967824,
    4872228.804626992
   ]
  },
  "min_100m": {
   "gradient_pct": 11.107161344167908,
   "start_distance_m": 34.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 84.0,
   "start_elevation_m": 114.69826067471926,
   "end_elevation_m": 125.80542201888717,
   "start_xy": [
    397516.4588729554,
    4872262.135050752
   ],
   "end_xy": [
    397418.02614635375,
    4872244.499905906
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 47.064614829047,
   "start_distance_m": 32.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 33.0,
   "start_elevation_m": 113.75696837813832,
   "end_elevation_m": 114.69826067471926,
   "start_xy": [
    397518.42752748745,
    4872262.487753649
   ],
   "end_xy": [
    397516.4588729554,
    4872262.135050752
   ]
  },
  "max_3m": {
   "gradient_pct": 42.69700405420025,
   "start_distance_m": 31.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 32.5,
   "start_elevation_m": 113.41735055309326,
   "end_elevation_m": 114.69826067471926,
   "start_xy": [
    397519.41185475345,
    4872262.664105098
   ],
   "end_xy": [
    397516.4588729554,
    4872262.135050752
   ]
  }
 },
 "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_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_x39y488_ME_SouthCentral_B22.tif"
  ],
  "calculated_at": "2026-08-24T20:36:03+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-2-260824",
  "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_SouthCentral_B22 (collected 2022)",
  "elevation_tile_ids": [
   "x39y488"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 12.1% over 200 m (Terrain 50), gain 27.5 m over 223 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (NE wave 1, 2026-08-25): clean-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": "New Gloucester",
  "county": "Maine"
 }
}