{
 "ocl_version": "0.1.0",
 "name": "Mansville Road",
 "slug": "mansville-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.497511683299876,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1537.0,
   "end_distance_m": 1539.0,
   "start_elevation_m": 476.04534494500336,
   "end_elevation_m": 476.51529517866936,
   "min_gradient_pct": -8.500143513708736
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.557255490239488,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1537.0,
   "end_distance_m": 1540.0,
   "start_elevation_m": 476.04534494500336,
   "end_elevation_m": 476.75206260971055,
   "min_gradient_pct": -8.439107440257962
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.527272077670887,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1537.0,
   "end_distance_m": 1542.0,
   "start_elevation_m": 476.04534494500336,
   "end_elevation_m": 477.2217085488869,
   "min_gradient_pct": -7.900046003544503
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.341482483956838,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1532.0,
   "end_distance_m": 1542.0,
   "start_elevation_m": 474.9875603004912,
   "end_elevation_m": 477.2217085488869,
   "min_gradient_pct": -7.574934449526154
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.228893715178856,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1523.0,
   "end_distance_m": 1543.0,
   "start_elevation_m": 473.1710997856467,
   "end_elevation_m": 477.41687852868245,
   "min_gradient_pct": -7.277422788259003
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.970548439481036,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1517.0,
   "end_distance_m": 1542.0,
   "start_elevation_m": 471.97907143901665,
   "end_elevation_m": 477.2217085488869,
   "min_gradient_pct": -7.177014987706343
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.84815005935411,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1493.0,
   "end_distance_m": 1543.0,
   "start_elevation_m": 467.4928034990054,
   "end_elevation_m": 477.41687852868245,
   "min_gradient_pct": -7.07187690406613
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.73554780270598,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1043.0,
   "end_distance_m": 1143.0,
   "start_elevation_m": 445.8414368542701,
   "end_elevation_m": 463.5769846569761,
   "min_gradient_pct": -6.317000782344451
  }
 ],
 "shape": {
  "ascent_concentration": 0.434,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 254.0,
  "shape_class": "sustained"
 },
 "length_m": 1589.7311716571455,
 "start_elevation_m": 370.53281617881464,
 "end_elevation_m": 481.48307443589135,
 "endpoint_gain_m": 110.95025825707671,
 "overall_gradient_pct": 6.979183665463481,
 "accumulated_ascent_m": 122.24070523775521,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.527272077670887,
   "start_distance_m": 1537.0,
   "end_distance_m": 1542.0,
   "midpoint_distance_m": 1539.5,
   "start_elevation_m": 476.04534494500336,
   "end_elevation_m": 477.2217085488869,
   "start_xy": [
    642443.3536887853,
    4450604.345128484
   ],
   "end_xy": [
    642444.9246643248,
    4450599.598336319
   ]
  },
  "max_10m": {
   "gradient_pct": 22.341482483956838,
   "start_distance_m": 1532.0,
   "end_distance_m": 1542.0,
   "midpoint_distance_m": 1537.0,
   "start_elevation_m": 474.9875603004912,
   "end_elevation_m": 477.2217085488869,
   "start_xy": [
    642441.7827132458,
    4450609.091920649
   ],
   "end_xy": [
    642444.9246643248,
    4450599.598336319
   ]
  },
  "max_20m": {
   "gradient_pct": 21.228893715178856,
   "start_distance_m": 1523.0,
   "end_distance_m": 1543.0,
   "midpoint_distance_m": 1533.0,
   "start_elevation_m": 473.1710997856467,
   "end_elevation_m": 477.41687852868245,
   "start_xy": [
    642437.3468870479,
    4450616.759090027
   ],
   "end_xy": [
    642445.2388594327,
    4450598.648977886
   ]
  },
  "max_25m": {
   "gradient_pct": 20.970548439481036,
   "start_distance_m": 1517.0,
   "end_distance_m": 1542.0,
   "midpoint_distance_m": 1529.5,
   "start_elevation_m": 471.97907143901665,
   "end_elevation_m": 477.2217085488869,
   "start_xy": [
    642433.5787259473,
    4450621.428240048
   ],
   "end_xy": [
    642444.9246643248,
    4450599.598336319
   ]
  },
  "max_50m": {
   "gradient_pct": 19.84815005935411,
   "start_distance_m": 1493.0,
   "end_distance_m": 1543.0,
   "midpoint_distance_m": 1518.0,
   "start_elevation_m": 467.4928034990054,
   "end_elevation_m": 477.41687852868245,
   "start_xy": [
    642418.5060815449,
    4450640.104840132
   ],
   "end_xy": [
    642445.2388594327,
    4450598.648977886
   ]
  },
  "max_100m": {
   "gradient_pct": 17.73554780270598,
   "start_distance_m": 1043.0,
   "end_distance_m": 1143.0,
   "midpoint_distance_m": 1093.0,
   "start_elevation_m": 445.8414368542701,
   "end_elevation_m": 463.5769846569761,
   "start_xy": [
    642591.1135799002,
    4451003.787084051
   ],
   "end_xy": [
    642533.1760498587,
    4450925.021538695
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.900046003544503,
   "start_distance_m": 1325.0,
   "end_distance_m": 1330.0,
   "midpoint_distance_m": 1327.5,
   "start_elevation_m": 469.0327126190212,
   "end_elevation_m": 468.637710318844,
   "start_xy": [
    642415.6066920136,
    4450797.652173842
   ],
   "end_xy": [
    642413.5091207166,
    4450793.113430111
   ]
  },
  "min_10m": {
   "gradient_pct": -7.574934449526154,
   "start_distance_m": 1321.0,
   "end_distance_m": 1331.0,
   "midpoint_distance_m": 1326.0,
   "start_elevation_m": 469.3183176565775,
   "end_elevation_m": 468.5608242116249,
   "start_xy": [
    642417.2847490512,
    4450801.283168826
   ],
   "end_xy": [
    642413.0896064572,
    4450792.205681365
   ]
  },
  "min_20m": {
   "gradient_pct": -7.277422788259003,
   "start_distance_m": 1292.0,
   "end_distance_m": 1312.0,
   "midpoint_distance_m": 1302.0,
   "start_elevation_m": 471.3599697353114,
   "end_elevation_m": 469.9044851776596,
   "start_xy": [
    642429.4506625739,
    4450827.607882465
   ],
   "end_xy": [
    642421.0603773858,
    4450809.452907542
   ]
  },
  "min_25m": {
   "gradient_pct": -7.177014987706343,
   "start_distance_m": 1292.0,
   "end_distance_m": 1317.0,
   "midpoint_distance_m": 1304.5,
   "start_elevation_m": 471.3599697353114,
   "end_elevation_m": 469.5657159883848,
   "start_xy": [
    642429.4506625739,
    4450827.607882465
   ],
   "end_xy": [
    642418.9628060888,
    4450804.914163811
   ]
  },
  "min_50m": {
   "gradient_pct": -7.07187690406613,
   "start_distance_m": 1291.0,
   "end_distance_m": 1341.0,
   "midpoint_distance_m": 1316.0,
   "start_elevation_m": 471.42321984582105,
   "end_elevation_m": 467.887281393788,
   "start_xy": [
    642429.8701768334,
    4450828.515631211
   ],
   "end_xy": [
    642409.026056892,
    4450783.0777819045
   ]
  },
  "min_100m": {
   "gradient_pct": -6.317000782344451,
   "start_distance_m": 1288.0,
   "end_distance_m": 1388.0,
   "midpoint_distance_m": 1338.0,
   "start_elevation_m": 471.57131841410546,
   "end_elevation_m": 465.254317631761,
   "start_xy": [
    642431.1287196116,
    4450831.23887745
   ],
   "end_xy": [
    642397.7054896448,
    4450737.5976714585
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.497511683299876,
   "start_distance_m": 1537.0,
   "end_distance_m": 1539.0,
   "midpoint_distance_m": 1538.0,
   "start_elevation_m": 476.04534494500336,
   "end_elevation_m": 476.51529517866936,
   "start_xy": [
    642443.3536887853,
    4450604.345128484
   ],
   "end_xy": [
    642443.9820790011,
    4450602.446411618
   ]
  },
  "max_3m": {
   "gradient_pct": 23.557255490239488,
   "start_distance_m": 1537.0,
   "end_distance_m": 1540.0,
   "midpoint_distance_m": 1538.5,
   "start_elevation_m": 476.04534494500336,
   "end_elevation_m": 476.75206260971055,
   "start_xy": [
    642443.3536887853,
    4450604.345128484
   ],
   "end_xy": [
    642444.296274109,
    4450601.497053185
   ]
  }
 },
 "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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x64y446_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T23:12:10+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": "pa-run4-260907",
  "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_WesternPA_2019_D20 (collected 2020)",
  "elevation_tile_ids": [
   "x64y446"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Cook",
  "county": "Pennsylvania"
 }
}