{
 "ocl_version": "0.1.0",
 "name": "Canfield Road",
 "slug": "canfield-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.87036380129541,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 97.0,
   "end_distance_m": 99.0,
   "start_elevation_m": 362.8361808632288,
   "end_elevation_m": 363.2735881392547,
   "min_gradient_pct": 0.42642597128406123
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.82812648926718,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 97.0,
   "end_distance_m": 100.0,
   "start_elevation_m": 362.8361808632288,
   "end_elevation_m": 363.4910246579068,
   "min_gradient_pct": 0.6134728896389182
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.782746810505387,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 94.0,
   "end_distance_m": 99.0,
   "start_elevation_m": 362.1844507987294,
   "end_elevation_m": 363.2735881392547,
   "min_gradient_pct": 0.6263490207822997
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.44978770410944,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 92.0,
   "end_distance_m": 102.0,
   "start_elevation_m": 361.7612319379773,
   "end_elevation_m": 363.90621070838824,
   "min_gradient_pct": 0.9545311404383483
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.857930813736516,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 86.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 360.5371189056729,
   "end_elevation_m": 364.7087050684202,
   "min_gradient_pct": 1.02159826416937
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.313578716792563,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 83.0,
   "end_distance_m": 108.0,
   "start_elevation_m": 359.9885225597727,
   "end_elevation_m": 365.06691723897086,
   "min_gradient_pct": 1.0950212561374428
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.270923316650055,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 66.0,
   "end_distance_m": 116.0,
   "start_elevation_m": 357.5680877767162,
   "end_elevation_m": 366.2035494350412,
   "min_gradient_pct": 1.2395289668356781
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.313588190772634,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 78.0,
   "end_distance_m": 178.0,
   "start_elevation_m": 359.1836723394149,
   "end_elevation_m": 375.49726053018753,
   "min_gradient_pct": 3.741297255837651
  }
 ],
 "shape": {
  "ascent_concentration": 0.408,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 184.0,
  "shape_class": "sustained"
 },
 "length_m": 314.0000000002497,
 "start_elevation_m": 351.9526485064541,
 "end_elevation_m": 383.75062627130006,
 "endpoint_gain_m": 31.79797776484594,
 "overall_gradient_pct": 10.12674451108938,
 "accumulated_ascent_m": 31.79797776484594,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.782746810505387,
   "start_distance_m": 94.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 96.5,
   "start_elevation_m": 362.1844507987294,
   "end_elevation_m": 363.2735881392547,
   "start_xy": [
    410837.9215068107,
    4610814.002849687
   ],
   "end_xy": [
    410837.33347111306,
    4610809.037549282
   ]
  },
  "max_10m": {
   "gradient_pct": 21.44978770410944,
   "start_distance_m": 92.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 97.0,
   "start_elevation_m": 361.7612319379773,
   "end_elevation_m": 363.90621070838824,
   "start_xy": [
    410838.1575099968,
    4610815.988876498
   ],
   "end_xy": [
    410837.05788016366,
    4610806.052293508
   ]
  },
  "max_20m": {
   "gradient_pct": 20.857930813736516,
   "start_distance_m": 86.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 96.0,
   "start_elevation_m": 360.5371189056729,
   "end_elevation_m": 364.7087050684202,
   "start_xy": [
    410839.5806140465,
    4610821.803687484
   ],
   "end_xy": [
    410836.9748981474,
    4610802.053154727
   ]
  },
  "max_25m": {
   "gradient_pct": 20.313578716792563,
   "start_distance_m": 83.0,
   "end_distance_m": 108.0,
   "midpoint_distance_m": 95.5,
   "start_elevation_m": 359.9885225597727,
   "end_elevation_m": 365.06691723897086,
   "start_xy": [
    410840.425759325,
    4610824.682181534
   ],
   "end_xy": [
    410836.93288651644,
    4610800.053596021
   ]
  },
  "max_50m": {
   "gradient_pct": 17.270923316650055,
   "start_distance_m": 66.0,
   "end_distance_m": 116.0,
   "midpoint_distance_m": 91.0,
   "start_elevation_m": 357.5680877767162,
   "end_elevation_m": 366.2035494350412,
   "start_xy": [
    410847.04117218306,
    4610840.316319354
   ],
   "end_xy": [
    410837.85385909735,
    4610792.13173336
   ]
  },
  "max_100m": {
   "gradient_pct": 16.313588190772634,
   "start_distance_m": 78.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 359.1836723394149,
   "end_elevation_m": 375.49726053018753,
   "start_xy": [
    410842.0986153134,
    4610829.383139169
   ],
   "end_xy": [
    410863.47207373567,
    4610736.292308092
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.6263490207822997,
   "start_distance_m": 309.0,
   "end_distance_m": 314.0,
   "midpoint_distance_m": 311.5,
   "start_elevation_m": 383.71930882026095,
   "end_elevation_m": 383.75062627130006,
   "start_xy": [
    410921.6701842499,
    4610619.678952837
   ],
   "end_xy": [
    410922.98835540767,
    4610614.857640669
   ]
  },
  "min_10m": {
   "gradient_pct": 0.9545311404383483,
   "start_distance_m": 277.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 282.0,
   "start_elevation_m": 383.30718437291296,
   "end_elevation_m": 383.4026374869568,
   "start_xy": [
    410910.099105904,
    4610649.478120169
   ],
   "end_xy": [
    410913.9400756674,
    4610640.245192925
   ]
  },
  "min_20m": {
   "gradient_pct": 1.02159826416937,
   "start_distance_m": 275.0,
   "end_distance_m": 295.0,
   "midpoint_distance_m": 285.0,
   "start_elevation_m": 383.2843617441052,
   "end_elevation_m": 383.48868139693906,
   "start_xy": [
    410909.3308734274,
    4610651.324689652
   ],
   "end_xy": [
    410917.012812762,
    4610632.85883547
   ]
  },
  "min_25m": {
   "gradient_pct": 1.0950212561374428,
   "start_distance_m": 270.0,
   "end_distance_m": 295.0,
   "midpoint_distance_m": 282.5,
   "start_elevation_m": 383.2149260829047,
   "end_elevation_m": 383.48868139693906,
   "start_xy": [
    410907.41014504514,
    4610655.941051892
   ],
   "end_xy": [
    410917.012812762,
    4610632.85883547
   ]
  },
  "min_50m": {
   "gradient_pct": 1.2395289668356781,
   "start_distance_m": 264.0,
   "end_distance_m": 314.0,
   "midpoint_distance_m": 289.0,
   "start_elevation_m": 383.1308617878822,
   "end_elevation_m": 383.75062627130006,
   "start_xy": [
    410905.10578555765,
    4610661.48090086
   ],
   "end_xy": [
    410922.98835540767,
    4610614.857640669
   ]
  },
  "min_100m": {
   "gradient_pct": 3.741297255837651,
   "start_distance_m": 214.0,
   "end_distance_m": 314.0,
   "midpoint_distance_m": 264.0,
   "start_elevation_m": 380.0093290154624,
   "end_elevation_m": 383.75062627130006,
   "start_xy": [
    410883.9155429414,
    4610706.661755123
   ],
   "end_xy": [
    410922.98835540767,
    4610614.857640669
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.87036380129541,
   "start_distance_m": 97.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 362.8361808632288,
   "end_elevation_m": 363.2735881392547,
   "start_xy": [
    410837.56848816545,
    4610811.023692782
   ],
   "end_xy": [
    410837.33347111306,
    4610809.037549282
   ]
  },
  "max_3m": {
   "gradient_pct": 21.82812648926718,
   "start_distance_m": 97.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 98.5,
   "start_elevation_m": 362.8361808632288,
   "end_elevation_m": 363.4910246579068,
   "start_xy": [
    410837.56848816545,
    4610811.023692782
   ],
   "end_xy": [
    410837.2154695202,
    4610808.044535877
   ]
  }
 },
 "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": []
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_1M_18_x41y461_PA_Northcentral_2019_B19.tif",
   "data/cache/usa/pa/USGS_1M_18_x41y462_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-08T16:18:43+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07-batch.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "run_id": "retro-box-260908",
  "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, PA_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x41y461",
   "x41y462"
  ],
  "route_cut_m": 1067.8,
  "route_summit_trim_m": 753.8,
  "route_summit_trim_loss_m": 21.4,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_Northcentral_2019_B19: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Auburn",
  "county": "Pennsylvania"
 }
}