{
 "ocl_version": "0.1.0",
 "name": "Mc Crillis Brook Road",
 "slug": "mc-crillis-brook-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.74804336503985,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 930.0,
   "end_distance_m": 932.0,
   "start_elevation_m": 240.9861920293281,
   "end_elevation_m": 241.6611528966289,
   "min_gradient_pct": -35.10564531912337
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.66237605799044,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1400.0,
   "end_distance_m": 1403.0,
   "start_elevation_m": 263.8073031832552,
   "end_elevation_m": 264.6371744649949,
   "min_gradient_pct": -27.29668954702144
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.860054902516595,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1397.0,
   "end_distance_m": 1402.0,
   "start_elevation_m": 263.0348984973669,
   "end_elevation_m": 264.3779012424927,
   "min_gradient_pct": -24.91518897623905
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.045039780710226,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1393.0,
   "end_distance_m": 1403.0,
   "start_elevation_m": 262.0326704869239,
   "end_elevation_m": 264.6371744649949,
   "min_gradient_pct": -14.309436646443032
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.64271844046192,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1390.0,
   "end_distance_m": 1410.0,
   "start_elevation_m": 261.4281253793712,
   "end_elevation_m": 265.95666906746357,
   "min_gradient_pct": -6.1599706859516346
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.317694305520035,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1390.0,
   "end_distance_m": 1415.0,
   "start_elevation_m": 261.4281253793712,
   "end_elevation_m": 266.7575489557512,
   "min_gradient_pct": -4.350831347307803
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.190623300736775,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1597.0,
   "end_distance_m": 1647.0,
   "start_elevation_m": 285.39266190794245,
   "end_elevation_m": 292.98797355831084,
   "min_gradient_pct": -2.3874118290098068
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.15943400175189,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1390.0,
   "end_distance_m": 1490.0,
   "start_elevation_m": 261.4281253793712,
   "end_elevation_m": 275.58755938112307,
   "min_gradient_pct": -1.586826137740161
  }
 ],
 "shape": {
  "ascent_concentration": 0.512,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 52.0,
  "shape_class": "stepped"
 },
 "length_m": 1647.7836294649994,
 "start_elevation_m": 220.8861061686897,
 "end_elevation_m": 293.13147647036766,
 "endpoint_gain_m": 72.24537030167795,
 "overall_gradient_pct": 4.384396653165834,
 "accumulated_ascent_m": 81.78983437037962,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.860054902516595,
   "start_distance_m": 1397.0,
   "end_distance_m": 1402.0,
   "midpoint_distance_m": 1399.5,
   "start_elevation_m": 263.0348984973669,
   "end_elevation_m": 264.3779012424927,
   "start_xy": [
    365421.8112132293,
    4919866.906997541
   ],
   "end_xy": [
    365417.7249574066,
    4919869.788405765
   ]
  },
  "max_10m": {
   "gradient_pct": 26.045039780710226,
   "start_distance_m": 1393.0,
   "end_distance_m": 1403.0,
   "midpoint_distance_m": 1398.0,
   "start_elevation_m": 262.0326704869239,
   "end_elevation_m": 264.6371744649949,
   "start_xy": [
    365425.08021788753,
    4919864.601870962
   ],
   "end_xy": [
    365416.90770624205,
    4919870.364687409
   ]
  },
  "max_20m": {
   "gradient_pct": 22.64271844046192,
   "start_distance_m": 1390.0,
   "end_distance_m": 1410.0,
   "midpoint_distance_m": 1400.0,
   "start_elevation_m": 261.4281253793712,
   "end_elevation_m": 265.95666906746357,
   "start_xy": [
    365427.53197138116,
    4919862.873026028
   ],
   "end_xy": [
    365411.1869480902,
    4919874.398658923
   ]
  },
  "max_25m": {
   "gradient_pct": 21.317694305520035,
   "start_distance_m": 1390.0,
   "end_distance_m": 1415.0,
   "midpoint_distance_m": 1402.5,
   "start_elevation_m": 261.4281253793712,
   "end_elevation_m": 266.7575489557512,
   "start_xy": [
    365427.53197138116,
    4919862.873026028
   ],
   "end_xy": [
    365407.10069226753,
    4919877.280067146
   ]
  },
  "max_50m": {
   "gradient_pct": 15.190623300736775,
   "start_distance_m": 1597.0,
   "end_distance_m": 1647.0,
   "midpoint_distance_m": 1622.0,
   "start_elevation_m": 285.39266190794245,
   "end_elevation_m": 292.98797355831084,
   "start_xy": [
    365258.36098032014,
    4919982.163326486
   ],
   "end_xy": [
    365217.4984220929,
    4920010.977408723
   ]
  },
  "max_100m": {
   "gradient_pct": 14.15943400175189,
   "start_distance_m": 1390.0,
   "end_distance_m": 1490.0,
   "midpoint_distance_m": 1440.0,
   "start_elevation_m": 261.4281253793712,
   "end_elevation_m": 275.58755938112307,
   "start_xy": [
    365427.53197138116,
    4919862.873026028
   ],
   "end_xy": [
    365345.8068549266,
    4919920.5011905
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -24.91518897623905,
   "start_distance_m": 923.0,
   "end_distance_m": 928.0,
   "midpoint_distance_m": 925.5,
   "start_elevation_m": 242.1276578077259,
   "end_elevation_m": 240.88189835891396,
   "start_xy": [
    365747.77772825153,
    4919541.01535728
   ],
   "end_xy": [
    365745.0738959066,
    4919545.221221121
   ]
  },
  "min_10m": {
   "gradient_pct": -14.309436646443032,
   "start_distance_m": 920.0,
   "end_distance_m": 930.0,
   "midpoint_distance_m": 925.0,
   "start_elevation_m": 242.4171356939724,
   "end_elevation_m": 240.9861920293281,
   "start_xy": [
    365749.4000276585,
    4919538.491838975
   ],
   "end_xy": [
    365743.9923629686,
    4919546.903566658
   ]
  },
  "min_20m": {
   "gradient_pct": -6.1599706859516346,
   "start_distance_m": 909.0,
   "end_distance_m": 929.0,
   "midpoint_distance_m": 919.0,
   "start_elevation_m": 242.11635745440887,
   "end_elevation_m": 240.88436331721854,
   "start_xy": [
    365755.3484588173,
    4919529.238938524
   ],
   "end_xy": [
    365744.53312943765,
    4919546.062393889
   ]
  },
  "min_25m": {
   "gradient_pct": -4.350831347307803,
   "start_distance_m": 815.0,
   "end_distance_m": 840.0,
   "midpoint_distance_m": 827.5,
   "start_elevation_m": 243.04558874447753,
   "end_elevation_m": 241.95788090765058,
   "start_xy": [
    365806.7133886594,
    4919450.529428046
   ],
   "end_xy": [
    365792.66134517716,
    4919471.198017516
   ]
  },
  "min_50m": {
   "gradient_pct": -2.3874118290098068,
   "start_distance_m": 807.0,
   "end_distance_m": 857.0,
   "midpoint_distance_m": 832.0,
   "start_elevation_m": 243.0420902174206,
   "end_elevation_m": 241.8483843029157,
   "start_xy": [
    365811.35396009235,
    4919444.012903146
   ],
   "end_xy": [
    365783.46831520443,
    4919485.497954576
   ]
  },
  "min_100m": {
   "gradient_pct": -1.586826137740161,
   "start_distance_m": 795.0,
   "end_distance_m": 895.0,
   "midpoint_distance_m": 845.0,
   "start_elevation_m": 243.0141165553704,
   "end_elevation_m": 241.42729041763025,
   "start_xy": [
    365818.3148172417,
    4919434.238115796
   ],
   "end_xy": [
    365762.9191893831,
    4919517.46251977
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.74804336503985,
   "start_distance_m": 930.0,
   "end_distance_m": 932.0,
   "midpoint_distance_m": 931.0,
   "start_elevation_m": 240.9861920293281,
   "end_elevation_m": 241.6611528966289,
   "start_xy": [
    365743.9923629686,
    4919546.903566658
   ],
   "end_xy": [
    365742.9108300307,
    4919548.585912194
   ]
  },
  "max_3m": {
   "gradient_pct": 27.66237605799044,
   "start_distance_m": 1400.0,
   "end_distance_m": 1403.0,
   "midpoint_distance_m": 1401.5,
   "start_elevation_m": 263.8073031832552,
   "end_elevation_m": 264.6371744649949,
   "start_xy": [
    365419.3594597357,
    4919868.635842475
   ],
   "end_xy": [
    365416.90770624205,
    4919870.364687409
   ]
  }
 },
 "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_x36y492_ME_WesternMtns_B24.tif",
   "data/cache/usa/me/USGS_1M_19_x36y493_ME_WesternMtns_B24.tif"
  ],
  "calculated_at": "2026-08-24T20:59:00+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_WesternMtns_B24 (collected 2024)",
  "elevation_tile_ids": [
   "x36y492",
   "x36y493"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 11.2% over 200 m (Terrain 50), gain 51.6 m over 1147 m way. EXTENDED by graph walk: +1 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. 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": "Woodstock",
  "county": "Maine"
 }
}