{
 "ocl_version": "0.1.0",
 "name": "S Road",
 "slug": "s-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 47.7223747373273,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 276.0,
   "end_distance_m": 278.0,
   "start_elevation_m": 157.73267491269374,
   "end_elevation_m": 158.68712240744028,
   "min_gradient_pct": -30.110351651856604,
   "suppressed_max_gradient_pct": 64.30394367422281,
   "suppressed_location_m": [
    289.0,
    291.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 43.901597024033855,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 275.0,
   "end_distance_m": 278.0,
   "start_elevation_m": 157.37007449671927,
   "end_elevation_m": 158.68712240744028,
   "min_gradient_pct": -24.216367222458263,
   "suppressed_max_gradient_pct": 58.710507435974556,
   "suppressed_location_m": [
    288.0,
    291.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 35.662947835593286,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 274.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 157.12692205336472,
   "end_elevation_m": 158.9100694451444,
   "min_gradient_pct": -18.563060402230462,
   "suppressed_max_gradient_pct": 37.208638219270824,
   "suppressed_location_m": [
    286.0,
    291.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.779360745345457,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 260.0,
   "end_distance_m": 270.0,
   "start_elevation_m": 153.57649281739654,
   "end_elevation_m": 156.4544288919311,
   "min_gradient_pct": -10.70680213701479
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.83556352836115,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 259.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 153.34295673947216,
   "end_elevation_m": 158.9100694451444,
   "min_gradient_pct": -4.3497793225816395
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.22161604093526,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 254.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 152.60466543491057,
   "end_elevation_m": 158.9100694451444,
   "min_gradient_pct": -1.5774477664175492
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.71675638414149,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 229.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 148.05169125307364,
   "end_elevation_m": 158.9100694451444,
   "min_gradient_pct": 4.802039454066858,
   "suppressed_max_gradient_pct": 22.551531317909053,
   "suppressed_location_m": [
    241.0,
    291.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.02823580385828,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 179.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 139.8818336412861,
   "end_elevation_m": 158.9100694451444,
   "min_gradient_pct": 9.219415705197378,
   "suppressed_max_gradient_pct": 19.387805555524267,
   "suppressed_location_m": [
    191.0,
    291.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.345,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 125.0,
  "shape_class": "sustained"
 },
 "length_m": 291.14155941631316,
 "start_elevation_m": 119.26426870788404,
 "end_elevation_m": 161.30512655586548,
 "endpoint_gain_m": 42.04085784798144,
 "overall_gradient_pct": 14.440005725141356,
 "accumulated_ascent_m": 43.17324018064309,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 35.662947835593286,
   "start_distance_m": 274.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 276.5,
   "start_elevation_m": 157.12692205336472,
   "end_elevation_m": 158.9100694451444,
   "start_xy": [
    347094.0778864009,
    4898564.025035399
   ],
   "end_xy": [
    347089.0955840368,
    4898564.445348559
   ]
  },
  "max_10m": {
   "gradient_pct": 28.779360745345457,
   "start_distance_m": 260.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 265.0,
   "start_elevation_m": 153.57649281739654,
   "end_elevation_m": 156.4544288919311,
   "start_xy": [
    347108.02833302045,
    4898562.848158551
   ],
   "end_xy": [
    347098.06372829224,
    4898563.688784871
   ]
  },
  "max_20m": {
   "gradient_pct": 27.83556352836115,
   "start_distance_m": 259.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 269.0,
   "start_elevation_m": 153.34295673947216,
   "end_elevation_m": 158.9100694451444,
   "start_xy": [
    347109.0247934933,
    4898562.764095919
   ],
   "end_xy": [
    347089.0955840368,
    4898564.445348559
   ]
  },
  "max_25m": {
   "gradient_pct": 25.22161604093526,
   "start_distance_m": 254.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 266.5,
   "start_elevation_m": 152.60466543491057,
   "end_elevation_m": 158.9100694451444,
   "start_xy": [
    347114.0070958574,
    4898562.343782759
   ],
   "end_xy": [
    347089.0955840368,
    4898564.445348559
   ]
  },
  "max_50m": {
   "gradient_pct": 21.71675638414149,
   "start_distance_m": 229.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 254.0,
   "start_elevation_m": 148.05169125307364,
   "end_elevation_m": 158.9100694451444,
   "start_xy": [
    347138.9186076781,
    4898560.24221696
   ],
   "end_xy": [
    347089.0955840368,
    4898564.445348559
   ]
  },
  "max_100m": {
   "gradient_pct": 19.02823580385828,
   "start_distance_m": 179.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 229.0,
   "start_elevation_m": 139.8818336412861,
   "end_elevation_m": 158.9100694451444,
   "start_xy": [
    347184.99672748934,
    4898544.214696408
   ],
   "end_xy": [
    347089.0955840368,
    4898564.445348559
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -18.563060402230462,
   "start_distance_m": 118.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 120.5,
   "start_elevation_m": 132.7323988611501,
   "end_elevation_m": 131.80424584103858,
   "start_xy": [
    347244.05292144173,
    4898549.652006715
   ],
   "end_xy": [
    347239.0549587275,
    4898549.5092877345
   ]
  },
  "min_10m": {
   "gradient_pct": -10.70680213701479,
   "start_distance_m": 113.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 132.87492605474006,
   "end_elevation_m": 131.80424584103858,
   "start_xy": [
    347248.9640543017,
    4898548.785276007
   ],
   "end_xy": [
    347239.0549587275,
    4898549.5092877345
   ]
  },
  "min_20m": {
   "gradient_pct": -4.3497793225816395,
   "start_distance_m": 103.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 132.6742017055549,
   "end_elevation_m": 131.80424584103858,
   "start_xy": [
    347258.76440347853,
    4898546.797021493
   ],
   "end_xy": [
    347239.0549587275,
    4898549.5092877345
   ]
  },
  "min_25m": {
   "gradient_pct": -1.5774477664175492,
   "start_distance_m": 98.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 132.19860778264297,
   "end_elevation_m": 131.80424584103858,
   "start_xy": [
    347263.66457806696,
    4898545.802894236
   ],
   "end_xy": [
    347239.0549587275,
    4898549.5092877345
   ]
  },
  "min_50m": {
   "gradient_pct": 4.802039454066858,
   "start_distance_m": 73.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 129.40322611400515,
   "end_elevation_m": 131.80424584103858,
   "start_xy": [
    347288.16545100906,
    4898540.832257952
   ],
   "end_xy": [
    347239.0549587275,
    4898549.5092877345
   ]
  },
  "min_100m": {
   "gradient_pct": 9.219415705197378,
   "start_distance_m": 62.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 112.0,
   "start_elevation_m": 128.43451656419296,
   "end_elevation_m": 137.65393226939034,
   "start_xy": [
    347298.9458351036,
    4898538.6451779865
   ],
   "end_xy": [
    347200.7762255674,
    4898542.422565091
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 47.7223747373273,
   "start_distance_m": 276.0,
   "end_distance_m": 278.0,
   "midpoint_distance_m": 277.0,
   "start_elevation_m": 157.73267491269374,
   "end_elevation_m": 158.68712240744028,
   "start_xy": [
    347092.0849654553,
    4898564.193160663
   ],
   "end_xy": [
    347090.0920445096,
    4898564.361285927
   ]
  },
  "max_3m": {
   "gradient_pct": 43.901597024033855,
   "start_distance_m": 275.0,
   "end_distance_m": 278.0,
   "midpoint_distance_m": 276.5,
   "start_elevation_m": 157.37007449671927,
   "end_elevation_m": 158.68712240744028,
   "start_xy": [
    347093.0814259281,
    4898564.109098031
   ],
   "end_xy": [
    347090.0920445096,
    4898564.361285927
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.014,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    288.0,
    291.0
   ]
  ],
  "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_x34y490_ME_WesternMtns_B24.tif"
  ],
  "calculated_at": "2026-08-24T20:49:08+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_WesternMtns_B24 (collected 2024)",
  "elevation_tile_ids": [
   "x34y490"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 14.0% over 200 m (Terrain 50), gain 41.3 m over 291 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": "Lovell",
  "county": "Maine"
 }
}