{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.3017, -68.3468)",
 "slug": "discovered-lane-44-3017-68-3468",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.83695888184073,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 118.0,
   "end_distance_m": 120.0,
   "start_elevation_m": 47.15686534027664,
   "end_elevation_m": 47.85360451791345,
   "min_gradient_pct": -0.9262419525711607
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.700610343632356,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 117.0,
   "end_distance_m": 120.0,
   "start_elevation_m": 46.81258620760448,
   "end_elevation_m": 47.85360451791345,
   "min_gradient_pct": 0.1638480149551924
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 33.37906679880163,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 114.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 45.818594256420376,
   "end_elevation_m": 47.48754759636046,
   "min_gradient_pct": 4.79146206105618
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.088664115043695,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 114.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 45.818594256420376,
   "end_elevation_m": 48.727460667924746,
   "min_gradient_pct": 8.281086090562795
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.968833015412727,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 113.0,
   "end_distance_m": 133.0,
   "start_elevation_m": 45.625766853712655,
   "end_elevation_m": 50.4195334567952,
   "min_gradient_pct": 9.549710812022845
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.885366978138055,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 133.0,
   "start_elevation_m": 44.69819171226069,
   "end_elevation_m": 50.4195334567952,
   "min_gradient_pct": 10.228423637091367
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.655014758282007,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 85.0,
   "end_distance_m": 135.0,
   "start_elevation_m": 40.97035237377506,
   "end_elevation_m": 50.79785975291606,
   "min_gradient_pct": 12.67907436916701
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.711433282212095,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 20.0,
   "end_distance_m": 120.0,
   "start_elevation_m": 31.14217123570136,
   "end_elevation_m": 47.85360451791345,
   "min_gradient_pct": 14.781854968532219
  }
 ],
 "shape": {
  "ascent_concentration": 0.317,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 103.0,
  "shape_class": "sustained"
 },
 "length_m": 160.4013556239028,
 "start_elevation_m": 28.539208132948232,
 "end_elevation_m": 53.58199190197133,
 "endpoint_gain_m": 25.042783769023096,
 "overall_gradient_pct": 15.612576135417184,
 "accumulated_ascent_m": 25.067104271842954,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 33.37906679880163,
   "start_distance_m": 114.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 116.5,
   "start_elevation_m": 45.818594256420376,
   "end_elevation_m": 47.48754759636046,
   "start_xy": [
    552127.56508979,
    4905580.33602994
   ],
   "end_xy": [
    552131.0149821179,
    4905576.716880465
   ]
  },
  "max_10m": {
   "gradient_pct": 29.088664115043695,
   "start_distance_m": 114.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 119.0,
   "start_elevation_m": 45.818594256420376,
   "end_elevation_m": 48.727460667924746,
   "start_xy": [
    552127.56508979,
    4905580.33602994
   ],
   "end_xy": [
    552134.4648744457,
    4905573.09773099
   ]
  },
  "max_20m": {
   "gradient_pct": 23.968833015412727,
   "start_distance_m": 113.0,
   "end_distance_m": 133.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 45.625766853712655,
   "end_elevation_m": 50.4195334567952,
   "start_xy": [
    552126.8751113245,
    4905581.059859836
   ],
   "end_xy": [
    552141.8883630215,
    4905568.228890635
   ]
  },
  "max_25m": {
   "gradient_pct": 22.885366978138055,
   "start_distance_m": 108.0,
   "end_distance_m": 133.0,
   "midpoint_distance_m": 120.5,
   "start_elevation_m": 44.69819171226069,
   "end_elevation_m": 50.4195334567952,
   "start_xy": [
    552123.0868955983,
    4905584.193468472
   ],
   "end_xy": [
    552141.8883630215,
    4905568.228890635
   ]
  },
  "max_50m": {
   "gradient_pct": 19.655014758282007,
   "start_distance_m": 85.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 110.0,
   "start_elevation_m": 40.97035237377506,
   "end_elevation_m": 50.79785975291606,
   "start_xy": [
    552101.9730810771,
    4905593.315246607
   ],
   "end_xy": [
    552143.6790508485,
    4905567.338139769
   ]
  },
  "max_100m": {
   "gradient_pct": 16.711433282212095,
   "start_distance_m": 20.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 31.14217123570136,
   "end_elevation_m": 47.85360451791345,
   "start_xy": [
    552037.5567902039,
    4905585.209275023
   ],
   "end_xy": [
    552131.7049605835,
    4905575.99305057
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 4.79146206105618,
   "start_distance_m": 15.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 17.5,
   "start_elevation_m": 30.90259813264855,
   "end_elevation_m": 31.14217123570136,
   "start_xy": [
    552032.5986235298,
    4905584.563842431
   ],
   "end_xy": [
    552037.5567902039,
    4905585.209275023
   ]
  },
  "min_10m": {
   "gradient_pct": 8.281086090562795,
   "start_distance_m": 10.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 15.0,
   "start_elevation_m": 30.31406262664508,
   "end_elevation_m": 31.14217123570136,
   "start_xy": [
    552027.6404568556,
    4905583.918409837
   ],
   "end_xy": [
    552037.5567902039,
    4905585.209275023
   ]
  },
  "min_20m": {
   "gradient_pct": 9.549710812022845,
   "start_distance_m": 40.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 35.252501664044345,
   "end_elevation_m": 37.162443826448914,
   "start_xy": [
    552057.3894569004,
    4905587.791005393
   ],
   "end_xy": [
    552077.222123597,
    4905590.372735763
   ]
  },
  "min_25m": {
   "gradient_pct": 10.228423637091367,
   "start_distance_m": 35.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 47.5,
   "start_elevation_m": 34.60533791717607,
   "end_elevation_m": 37.162443826448914,
   "start_xy": [
    552052.4312902263,
    4905587.1455728
   ],
   "end_xy": [
    552077.222123597,
    4905590.372735763
   ]
  },
  "min_50m": {
   "gradient_pct": 12.67907436916701,
   "start_distance_m": 34.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 59.0,
   "start_elevation_m": 34.478094547760094,
   "end_elevation_m": 40.8176317323436,
   "start_xy": [
    552051.4396568915,
    4905587.0164862815
   ],
   "end_xy": [
    552101.0213236329,
    4905593.470812206
   ]
  },
  "min_100m": {
   "gradient_pct": 14.781854968532219,
   "start_distance_m": 9.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 59.0,
   "start_elevation_m": 30.12031632564324,
   "end_elevation_m": 44.90217129417546,
   "start_xy": [
    552026.6488235208,
    4905583.78932332
   ],
   "end_xy": [
    552124.0048875341,
    4905583.796869422
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.83695888184073,
   "start_distance_m": 118.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 119.0,
   "start_elevation_m": 47.15686534027664,
   "end_elevation_m": 47.85360451791345,
   "start_xy": [
    552130.3250036524,
    4905577.44071036
   ],
   "end_xy": [
    552131.7049605835,
    4905575.99305057
   ]
  },
  "max_3m": {
   "gradient_pct": 34.700610343632356,
   "start_distance_m": 117.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 118.5,
   "start_elevation_m": 46.81258620760448,
   "end_elevation_m": 47.85360451791345,
   "start_xy": [
    552129.6350251868,
    4905578.164540255
   ],
   "end_xy": [
    552131.7049605835,
    4905575.99305057
   ]
  }
 },
 "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_x55y491_ME_MidCoast_2021_B21.tif"
  ],
  "calculated_at": "2026-08-24T21:06:16+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_MidCoast_2021_B21 (collected 2021)",
  "elevation_tile_ids": [
   "x55y491"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 12.5% over 200 m (Terrain 50), gain 25.1 m over 160 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": "Southwest Harbor",
  "county": "Maine"
 }
}