{
 "ocl_version": "0.1.0",
 "name": "Ash Road",
 "slug": "ash-road",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 54.26494654590783,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 762.0,
   "end_distance_m": 764.0,
   "start_elevation_m": 326.4610084336069,
   "end_elevation_m": 327.54630736452503,
   "min_gradient_pct": -15.765509540560174,
   "suppressed_max_gradient_pct": 84.56126349563249,
   "suppressed_location_m": [
    674.0,
    676.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 53.07321914882929,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 762.0,
   "end_distance_m": 765.0,
   "start_elevation_m": 326.4610084336069,
   "end_elevation_m": 328.05320500807176,
   "min_gradient_pct": -14.068143418243531,
   "suppressed_max_gradient_pct": 78.43315170045646,
   "suppressed_location_m": [
    674.0,
    677.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 50.6075403584714,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 761.0,
   "end_distance_m": 766.0,
   "start_elevation_m": 326.023377992772,
   "end_elevation_m": 328.55375501069557,
   "min_gradient_pct": -11.613658240215727,
   "suppressed_max_gradient_pct": 62.64120051410487,
   "suppressed_location_m": [
    674.0,
    679.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 45.37693434294454,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 757.0,
   "end_distance_m": 767.0,
   "start_elevation_m": 324.4337661337113,
   "end_elevation_m": 328.97145956800574,
   "min_gradient_pct": -9.812308390396538
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 40.0312797135436,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 750.0,
   "end_distance_m": 770.0,
   "start_elevation_m": 322.09065198146334,
   "end_elevation_m": 330.09690792417206,
   "min_gradient_pct": -5.985222796395533
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 39.18345791197362,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 746.0,
   "end_distance_m": 771.0,
   "start_elevation_m": 320.62972888642844,
   "end_elevation_m": 330.42559336442184,
   "min_gradient_pct": -5.564415653061815
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 35.862881052178295,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 722.0,
   "end_distance_m": 772.0,
   "start_elevation_m": 312.79609059281046,
   "end_elevation_m": 330.7275311188996,
   "min_gradient_pct": -5.00812918747431
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 31.314403514283413,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 706.0,
   "end_distance_m": 806.0,
   "start_elevation_m": 308.7986676505826,
   "end_elevation_m": 340.113071164866,
   "min_gradient_pct": -0.8649936666024587
  }
 ],
 "shape": {
  "ascent_concentration": 0.43,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 287.0,
  "shape_class": "sustained"
 },
 "length_m": 1071.5980469449692,
 "start_elevation_m": 209.96990365904435,
 "end_elevation_m": 360.2831615272817,
 "endpoint_gain_m": 150.31325786823737,
 "overall_gradient_pct": 14.02701864722198,
 "accumulated_ascent_m": 154.2536274529145,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 50.6075403584714,
   "start_distance_m": 761.0,
   "end_distance_m": 766.0,
   "midpoint_distance_m": 763.5,
   "start_elevation_m": 326.023377992772,
   "end_elevation_m": 328.55375501069557,
   "start_xy": [
    366336.2977350735,
    4927355.828882182
   ],
   "end_xy": [
    366337.9345580379,
    4927351.104392238
   ]
  },
  "max_10m": {
   "gradient_pct": 45.37693434294454,
   "start_distance_m": 757.0,
   "end_distance_m": 767.0,
   "midpoint_distance_m": 762.0,
   "start_elevation_m": 324.4337661337113,
   "end_elevation_m": 328.97145956800574,
   "start_xy": [
    366334.9885010556,
    4927359.608551996
   ],
   "end_xy": [
    366338.2624569603,
    4927350.159679427
   ]
  },
  "max_20m": {
   "gradient_pct": 40.0312797135436,
   "start_distance_m": 750.0,
   "end_distance_m": 770.0,
   "midpoint_distance_m": 760.0,
   "start_elevation_m": 322.09065198146334,
   "end_elevation_m": 330.09690792417206,
   "start_xy": [
    366332.696460736,
    4927366.2226685155
   ],
   "end_xy": [
    366339.24468135444,
    4927347.325030948
   ]
  },
  "max_25m": {
   "gradient_pct": 39.18345791197362,
   "start_distance_m": 746.0,
   "end_distance_m": 771.0,
   "midpoint_distance_m": 758.5,
   "start_elevation_m": 320.62972888642844,
   "end_elevation_m": 330.42559336442184,
   "start_xy": [
    366331.3866465707,
    4927370.002137166
   ],
   "end_xy": [
    366339.5716907563,
    4927346.3800098635
   ]
  },
  "max_50m": {
   "gradient_pct": 35.862881052178295,
   "start_distance_m": 722.0,
   "end_distance_m": 772.0,
   "midpoint_distance_m": 747.0,
   "start_elevation_m": 312.79609059281046,
   "end_elevation_m": 330.7275311188996,
   "start_xy": [
    366323.52950118674,
    4927392.679551616
   ],
   "end_xy": [
    366339.8995893171,
    4927345.435296928
   ]
  },
  "max_100m": {
   "gradient_pct": 31.314403514283413,
   "start_distance_m": 706.0,
   "end_distance_m": 806.0,
   "midpoint_distance_m": 756.0,
   "start_elevation_m": 308.7986676505826,
   "end_elevation_m": 340.113071164866,
   "start_xy": [
    366318.29171431425,
    4927407.797935697
   ],
   "end_xy": [
    366351.03068884567,
    4927313.309009299
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.613658240215727,
   "start_distance_m": 903.0,
   "end_distance_m": 908.0,
   "midpoint_distance_m": 905.5,
   "start_elevation_m": 352.6893490049664,
   "end_elevation_m": 352.1086660929556,
   "start_xy": [
    366382.78654755343,
    4927221.654422445
   ],
   "end_xy": [
    366384.4236802716,
    4927216.930040072
   ]
  },
  "min_10m": {
   "gradient_pct": -9.812308390396538,
   "start_distance_m": 901.0,
   "end_distance_m": 911.0,
   "midpoint_distance_m": 906.0,
   "start_elevation_m": 352.80449333289573,
   "end_elevation_m": 351.8232624938561,
   "start_xy": [
    366382.13253102015,
    4927223.5444654
   ],
   "end_xy": [
    366385.40559552476,
    4927214.095284235
   ]
  },
  "min_20m": {
   "gradient_pct": -5.985222796395533,
   "start_distance_m": 896.0,
   "end_distance_m": 916.0,
   "midpoint_distance_m": 906.0,
   "start_elevation_m": 352.9109783548636,
   "end_elevation_m": 351.71393379558447,
   "start_xy": [
    366380.4953989388,
    4927228.268848323
   ],
   "end_xy": [
    366387.04272834444,
    4927209.370901568
   ]
  },
  "min_25m": {
   "gradient_pct": -5.564415653061815,
   "start_distance_m": 899.0,
   "end_distance_m": 924.0,
   "midpoint_distance_m": 911.5,
   "start_elevation_m": 352.92138904484494,
   "end_elevation_m": 351.5302851315795,
   "start_xy": [
    366381.4776230575,
    4927225.434199421
   ],
   "end_xy": [
    366389.6626671228,
    4927201.812072077
   ]
  },
  "min_50m": {
   "gradient_pct": -5.00812918747431,
   "start_distance_m": 899.0,
   "end_distance_m": 949.0,
   "midpoint_distance_m": 924.0,
   "start_elevation_m": 352.92138904484494,
   "end_elevation_m": 350.4173244511078,
   "start_xy": [
    366381.4776230575,
    4927225.434199421
   ],
   "end_xy": [
    366397.8465107477,
    4927178.189528486
   ]
  },
  "min_100m": {
   "gradient_pct": -0.8649936666024587,
   "start_distance_m": 887.0,
   "end_distance_m": 987.0,
   "midpoint_distance_m": 937.0,
   "start_elevation_m": 352.8744009776892,
   "end_elevation_m": 352.00940731108676,
   "start_xy": [
    366377.54845193576,
    4927236.772699307
   ],
   "end_xy": [
    366410.28742531437,
    4927142.283772182
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 54.26494654590783,
   "start_distance_m": 762.0,
   "end_distance_m": 764.0,
   "midpoint_distance_m": 763.0,
   "start_elevation_m": 326.4610084336069,
   "end_elevation_m": 327.54630736452503,
   "start_xy": [
    366336.6256335137,
    4927354.884169203
   ],
   "end_xy": [
    366337.27965032664,
    4927352.994126346
   ]
  },
  "max_3m": {
   "gradient_pct": 53.07321914882929,
   "start_distance_m": 762.0,
   "end_distance_m": 765.0,
   "midpoint_distance_m": 763.5,
   "start_elevation_m": 326.4610084336069,
   "end_elevation_m": 328.05320500807176,
   "start_xy": [
    366336.6256335137,
    4927354.884169203
   ],
   "end_xy": [
    366337.60754899756,
    4927352.049413447
   ]
  }
 },
 "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": 0.021,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    5.0,
    11.0
   ],
   [
    665.0,
    679.0
   ]
  ],
  "review": [
   "max5_over_45",
   "max10_over_40"
  ],
  "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_x36y493_ME_WesternMtns_B24.tif"
  ],
  "calculated_at": "2026-09-03T12:31:37+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/ash-road/ash-road.geojson",
  "run_id": "canopy-all-260903",
  "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": [
   "x36y493"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: NH_Umbagog_2016: no corridor points fetched; USGS_LPC_ME_NRCS_Lot4_2013_LAS_2015: no corridor points fetched; ME_SouthCentral_1_B22: no corridor points fetched",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Bethel",
  "county": "Maine"
 }
}