{
 "ocl_version": "0.1.0",
 "name": "Faraway Road",
 "slug": "faraway-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.08756953057751,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 12.682560339120755,
   "end_elevation_m": 13.544311729732305,
   "min_gradient_pct": -15.886098708003725
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 38.08156864787785,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 111.0,
   "start_elevation_m": 12.682560339120755,
   "end_elevation_m": 13.82500739855709,
   "min_gradient_pct": -12.14192160894938
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.820205950968194,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 113.0,
   "start_elevation_m": 12.682560339120755,
   "end_elevation_m": 14.273570636669165,
   "min_gradient_pct": -4.743764495866287
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.84324232506176,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 141.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 19.186723439008812,
   "end_elevation_m": 21.971047671514988,
   "min_gradient_pct": 1.849769026414645
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.02987542666309,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 135.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 17.711763762603763,
   "end_elevation_m": 22.91773884793638,
   "min_gradient_pct": 4.7872274565266215
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.085775635806343,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 141.0,
   "end_distance_m": 166.0,
   "start_elevation_m": 19.186723439008812,
   "end_elevation_m": 25.708167347960398,
   "min_gradient_pct": 6.216847471276193
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.8779895366274,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "start_elevation_m": 16.178377936401766,
   "end_elevation_m": 27.617372704715468,
   "min_gradient_pct": 6.529453771046045
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.741531897754406,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 80.0,
   "end_distance_m": 180.0,
   "start_elevation_m": 10.567498169648415,
   "end_elevation_m": 28.309030067402823,
   "min_gradient_pct": 8.543688640892483
  }
 ],
 "shape": {
  "ascent_concentration": 0.441,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 88.0,
  "shape_class": "sustained"
 },
 "length_m": 234.10676344855872,
 "start_elevation_m": 3.6312870872391683,
 "end_elevation_m": 32.862460220327364,
 "endpoint_gain_m": 29.231173133088195,
 "overall_gradient_pct": 12.486257424814335,
 "accumulated_ascent_m": 30.045118065854403,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.820205950968194,
   "start_distance_m": 108.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 12.682560339120755,
   "end_elevation_m": 14.273570636669165,
   "start_xy": [
    562214.5124659799,
    4935383.879080143
   ],
   "end_xy": [
    562212.450068034,
    4935379.324245929
   ]
  },
  "max_10m": {
   "gradient_pct": 27.84324232506176,
   "start_distance_m": 141.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 146.0,
   "start_elevation_m": 19.186723439008812,
   "end_elevation_m": 21.971047671514988,
   "start_xy": [
    562200.900639537,
    4935353.817174333
   ],
   "end_xy": [
    562196.7758436452,
    4935344.707505906
   ]
  },
  "max_20m": {
   "gradient_pct": 26.02987542666309,
   "start_distance_m": 135.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 17.711763762603763,
   "end_elevation_m": 22.91773884793638,
   "start_xy": [
    562203.375517072,
    4935359.28297539
   ],
   "end_xy": [
    562195.1259252885,
    4935341.063638535
   ]
  },
  "max_25m": {
   "gradient_pct": 26.085775635806343,
   "start_distance_m": 141.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 153.5,
   "start_elevation_m": 19.186723439008812,
   "end_elevation_m": 25.708167347960398,
   "start_xy": [
    562200.900639537,
    4935353.817174333
   ],
   "end_xy": [
    562190.5886498076,
    4935331.043003266
   ]
  },
  "max_50m": {
   "gradient_pct": 22.8779895366274,
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 16.178377936401766,
   "end_elevation_m": 27.617372704715468,
   "start_xy": [
    562207.0878333747,
    4935367.481676974
   ],
   "end_xy": [
    562186.4638539158,
    4935321.933334839
   ]
  },
  "max_100m": {
   "gradient_pct": 17.741531897754406,
   "start_distance_m": 80.0,
   "end_distance_m": 180.0,
   "midpoint_distance_m": 130.0,
   "start_elevation_m": 10.567498169648415,
   "end_elevation_m": 28.309030067402823,
   "start_xy": [
    562229.0384595854,
    4935407.586273428
   ],
   "end_xy": [
    562184.813935559,
    4935318.289467468
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.743764495866287,
   "start_distance_m": 212.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 214.5,
   "start_elevation_m": 31.48653025568545,
   "end_elevation_m": 31.249342030892137,
   "start_xy": [
    562171.6145887054,
    4935289.138528502
   ],
   "end_xy": [
    562169.5521907595,
    4935284.583694288
   ]
  },
  "min_10m": {
   "gradient_pct": 1.849769026414645,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 3.6312870872391683,
   "end_elevation_m": 3.8162639898806328,
   "start_xy": [
    562278.248,
    4935470.661
   ],
   "end_xy": [
    562272.0968074482,
    4935462.776659179
   ]
  },
  "min_20m": {
   "gradient_pct": 4.7872274565266215,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 3.6312870872391683,
   "end_elevation_m": 4.588732578544493,
   "start_xy": [
    562278.248,
    4935470.661
   ],
   "end_xy": [
    562265.9456148964,
    4935454.892318357
   ]
  },
  "min_25m": {
   "gradient_pct": 6.216847471276193,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 3.6312870872391683,
   "end_elevation_m": 5.1854989550582165,
   "start_xy": [
    562278.248,
    4935470.661
   ],
   "end_xy": [
    562262.8700186205,
    4935450.950147946
   ]
  },
  "min_50m": {
   "gradient_pct": 6.529453771046045,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 3.6312870872391683,
   "end_elevation_m": 6.896013972762191,
   "start_xy": [
    562278.248,
    4935470.661
   ],
   "end_xy": [
    562247.4920372409,
    4935431.239295892
   ]
  },
  "min_100m": {
   "gradient_pct": 8.543688640892483,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 3.6312870872391683,
   "end_elevation_m": 12.174975728131653,
   "start_xy": [
    562278.248,
    4935470.661
   ],
   "end_xy": [
    562217.8123026934,
    4935391.166814884
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.08756953057751,
   "start_distance_m": 108.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 12.682560339120755,
   "end_elevation_m": 13.544311729732305,
   "start_xy": [
    562214.5124659799,
    4935383.879080143
   ],
   "end_xy": [
    562213.6875068016,
    4935382.057146457
   ]
  },
  "max_3m": {
   "gradient_pct": 38.08156864787785,
   "start_distance_m": 108.0,
   "end_distance_m": 111.0,
   "midpoint_distance_m": 109.5,
   "start_elevation_m": 12.682560339120755,
   "end_elevation_m": 13.82500739855709,
   "start_xy": [
    562214.5124659799,
    4935383.879080143
   ],
   "end_xy": [
    562213.2750272123,
    4935381.146179615
   ]
  }
 },
 "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_x56y494_ME_MidCoast_2021_B21.tif"
  ],
  "calculated_at": "2026-08-24T20:57:49+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": [
   "x56y494"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 13.2% over 200 m (Terrain 50), gain 29.6 m over 234 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": "Franklin",
  "county": "Maine"
 }
}