{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.4519, -68.0625)",
 "slug": "discovered-lane-44-4519-68-0625",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.089582376289954,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 75.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 39.71699790784232,
   "end_elevation_m": 40.21878955536812,
   "min_gradient_pct": -21.715593027044378
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.614265592530177,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 75.0,
   "end_distance_m": 78.0,
   "start_elevation_m": 39.71699790784232,
   "end_elevation_m": 40.455425875618225,
   "min_gradient_pct": -19.567981026350385
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.446146890517326,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 72.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 38.99648221084225,
   "end_elevation_m": 40.21878955536812,
   "min_gradient_pct": -18.008845162770797
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.27869497010333,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 68.0,
   "end_distance_m": 78.0,
   "start_elevation_m": 38.12755637860789,
   "end_elevation_m": 40.455425875618225,
   "min_gradient_pct": -16.467951829603038
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.69221958620058,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 67.0,
   "end_distance_m": 87.0,
   "start_elevation_m": 37.91892245501452,
   "end_elevation_m": 42.45736637225463,
   "min_gradient_pct": -9.959645614972104
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.364296977205612,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 65.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 37.4839780022084,
   "end_elevation_m": 43.075052246509806,
   "min_gradient_pct": -7.763734379599896
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.964027820259336,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 65.0,
   "end_distance_m": 115.0,
   "start_elevation_m": 37.4839780022084,
   "end_elevation_m": 48.46599191233807,
   "min_gradient_pct": -7.555595407209097
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.172276773281293,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 22.0,
   "end_distance_m": 122.0,
   "start_elevation_m": 30.57053072386204,
   "end_elevation_m": 49.74280749714333,
   "min_gradient_pct": 0.6661068889363975
  }
 ],
 "shape": {
  "ascent_concentration": 0.441,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 135.0,
  "shape_class": "sustained"
 },
 "length_m": 657.6272018437173,
 "start_elevation_m": 28.607443130745814,
 "end_elevation_m": 80.01173886351269,
 "endpoint_gain_m": 51.404295732766876,
 "overall_gradient_pct": 7.8166316096186845,
 "accumulated_ascent_m": 56.19464029688706,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.446146890517326,
   "start_distance_m": 72.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 74.5,
   "start_elevation_m": 38.99648221084225,
   "end_elevation_m": 40.21878955536812,
   "start_xy": [
    574321.7672786458,
    4922531.73264451
   ],
   "end_xy": [
    574326.307819285,
    4922529.638965761
   ]
  },
  "max_10m": {
   "gradient_pct": 23.27869497010333,
   "start_distance_m": 68.0,
   "end_distance_m": 78.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 38.12755637860789,
   "end_elevation_m": 40.455425875618225,
   "start_xy": [
    574318.1348461345,
    4922533.40758751
   ],
   "end_xy": [
    574327.2571883573,
    4922529.335190014
   ]
  },
  "max_20m": {
   "gradient_pct": 22.69221958620058,
   "start_distance_m": 67.0,
   "end_distance_m": 87.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 37.91892245501452,
   "end_elevation_m": 42.45736637225463,
   "start_xy": [
    574317.2267380066,
    4922533.82632326
   ],
   "end_xy": [
    574335.9612845697,
    4922527.046367364
   ]
  },
  "max_25m": {
   "gradient_pct": 22.364296977205612,
   "start_distance_m": 65.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 77.5,
   "start_elevation_m": 37.4839780022084,
   "end_elevation_m": 43.075052246509806,
   "start_xy": [
    574315.4105217509,
    4922534.663794759
   ],
   "end_xy": [
    574338.8626499738,
    4922526.28342648
   ]
  },
  "max_50m": {
   "gradient_pct": 21.964027820259336,
   "start_distance_m": 65.0,
   "end_distance_m": 115.0,
   "midpoint_distance_m": 90.0,
   "start_elevation_m": 37.4839780022084,
   "end_elevation_m": 48.46599191233807,
   "start_xy": [
    574315.4105217509,
    4922534.663794759
   ],
   "end_xy": [
    574363.0406950082,
    4922519.925585784
   ]
  },
  "max_100m": {
   "gradient_pct": 19.172276773281293,
   "start_distance_m": 22.0,
   "end_distance_m": 122.0,
   "midpoint_distance_m": 72.0,
   "start_elevation_m": 30.57053072386204,
   "end_elevation_m": 49.74280749714333,
   "start_xy": [
    574275.5215163901,
    4922550.533990057
   ],
   "end_xy": [
    574369.8204469851,
    4922518.18373298
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -18.008845162770797,
   "start_distance_m": 629.0,
   "end_distance_m": 634.0,
   "midpoint_distance_m": 631.5,
   "start_elevation_m": 80.8992369756385,
   "end_elevation_m": 79.99879471749996,
   "start_xy": [
    574521.2552379903,
    4922364.39210508
   ],
   "end_xy": [
    574516.264837925,
    4922364.082416223
   ]
  },
  "min_10m": {
   "gradient_pct": -16.467951829603038,
   "start_distance_m": 604.0,
   "end_distance_m": 614.0,
   "midpoint_distance_m": 609.0,
   "start_elevation_m": 82.75621451557845,
   "end_elevation_m": 81.10941933261815,
   "start_xy": [
    574545.5426091941,
    4922370.276642053
   ],
   "end_xy": [
    574535.8345106235,
    4922367.878137907
   ]
  },
  "min_20m": {
   "gradient_pct": -9.959645614972104,
   "start_distance_m": 599.0,
   "end_distance_m": 619.0,
   "midpoint_distance_m": 609.0,
   "start_elevation_m": 82.9829034302155,
   "end_elevation_m": 80.99097430722108,
   "start_xy": [
    574550.3966584795,
    4922371.475894127
   ],
   "end_xy": [
    574530.9804613381,
    4922366.678885833
   ]
  },
  "min_25m": {
   "gradient_pct": -7.763734379599896,
   "start_distance_m": 600.0,
   "end_distance_m": 625.0,
   "midpoint_distance_m": 612.5,
   "start_elevation_m": 82.97566486799732,
   "end_elevation_m": 81.03473127309735,
   "start_xy": [
    574549.4258486223,
    4922371.236043712
   ],
   "end_xy": [
    574525.1556021956,
    4922365.239783346
   ]
  },
  "min_50m": {
   "gradient_pct": -7.555595407209097,
   "start_distance_m": 597.0,
   "end_distance_m": 647.0,
   "midpoint_distance_m": 622.0,
   "start_elevation_m": 82.95959405512713,
   "end_elevation_m": 79.18179635152258,
   "start_xy": [
    574552.3382781936,
    4922371.955594957
   ],
   "end_xy": [
    574503.2897977551,
    4922363.277225197
   ]
  },
  "min_100m": {
   "gradient_pct": 0.6661068889363975,
   "start_distance_m": 557.0,
   "end_distance_m": 657.0,
   "midpoint_distance_m": 607.0,
   "start_elevation_m": 79.32409149575925,
   "end_elevation_m": 79.99019838469565,
   "start_xy": [
    574590.1173490399,
    4922384.816600644
   ],
   "end_xy": [
    574493.3089976243,
    4922362.657847485
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.089582376289954,
   "start_distance_m": 75.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 76.0,
   "start_elevation_m": 39.71699790784232,
   "end_elevation_m": 40.21878955536812,
   "start_xy": [
    574324.4916030293,
    4922530.476437261
   ],
   "end_xy": [
    574326.307819285,
    4922529.638965761
   ]
  },
  "max_3m": {
   "gradient_pct": 24.614265592530177,
   "start_distance_m": 75.0,
   "end_distance_m": 78.0,
   "midpoint_distance_m": 76.5,
   "start_elevation_m": 39.71699790784232,
   "end_elevation_m": 40.455425875618225,
   "start_xy": [
    574324.4916030293,
    4922530.476437261
   ],
   "end_xy": [
    574327.2571883573,
    4922529.335190014
   ]
  }
 },
 "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"
  ]
 },
 "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_x57y493_ME_MidCoast_2021_B21.tif"
  ],
  "calculated_at": "2026-08-24T21:05:32+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": [
   "x57y493"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 12.6% over 200 m (Terrain 50), gain 50.6 m over 658 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": "Gouldsboro",
  "county": "Maine"
 }
}