{
 "ocl_version": "0.1.0",
 "name": "State Line Road",
 "slug": "state-line-road-7",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.34366854602672,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1286.0,
   "end_distance_m": 1288.0,
   "start_elevation_m": 472.3543229282187,
   "end_elevation_m": 472.84119629913926,
   "min_gradient_pct": -2.7623953392946987
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.63976292373688,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1289.0,
   "end_distance_m": 1292.0,
   "start_elevation_m": 473.0625330990292,
   "end_elevation_m": 473.77172598674133,
   "min_gradient_pct": -2.748478540746646
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.629628106409655,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1286.0,
   "end_distance_m": 1291.0,
   "start_elevation_m": 472.3543229282187,
   "end_elevation_m": 473.5358043335392,
   "min_gradient_pct": -2.5028656694314577
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.483477831817936,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1286.0,
   "end_distance_m": 1296.0,
   "start_elevation_m": 472.3543229282187,
   "end_elevation_m": 474.7026707114005,
   "min_gradient_pct": -0.14598806004244125
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.74856259069537,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1283.0,
   "end_distance_m": 1303.0,
   "start_elevation_m": 471.70070199385356,
   "end_elevation_m": 476.25041451199263,
   "min_gradient_pct": 1.311723284591153
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.31918032655267,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1279.0,
   "end_distance_m": 1304.0,
   "start_elevation_m": 470.87698088682157,
   "end_elevation_m": 476.45677596845974,
   "min_gradient_pct": 1.2709504159972767
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.502138364246775,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1260.0,
   "end_distance_m": 1310.0,
   "start_elevation_m": 467.78608526412756,
   "end_elevation_m": 477.53715444625095,
   "min_gradient_pct": 1.6038011375599126
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.63111427450366,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1214.0,
   "end_distance_m": 1314.0,
   "start_elevation_m": 460.54151932709243,
   "end_elevation_m": 478.1726336015961,
   "min_gradient_pct": 1.946039175766657
  }
 ],
 "shape": {
  "ascent_concentration": 0.315,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 417.0,
  "shape_class": "sustained"
 },
 "length_m": 2980.0000000002346,
 "start_elevation_m": 356.29143672461623,
 "end_elevation_m": 642.1655504606101,
 "endpoint_gain_m": 285.8741137359939,
 "overall_gradient_pct": 9.593091064965483,
 "accumulated_ascent_m": 286.0149836065134,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.629628106409655,
   "start_distance_m": 1286.0,
   "end_distance_m": 1291.0,
   "midpoint_distance_m": 1288.5,
   "start_elevation_m": 472.3543229282187,
   "end_elevation_m": 473.5358043335392,
   "start_xy": [
    685703.6387899034,
    4399628.170631646
   ],
   "end_xy": [
    685708.4164202006,
    4399629.645165045
   ]
  },
  "max_10m": {
   "gradient_pct": 23.483477831817936,
   "start_distance_m": 1286.0,
   "end_distance_m": 1296.0,
   "midpoint_distance_m": 1291.0,
   "start_elevation_m": 472.3543229282187,
   "end_elevation_m": 474.7026707114005,
   "start_xy": [
    685703.6387899034,
    4399628.170631646
   ],
   "end_xy": [
    685713.1940504978,
    4399631.119698443
   ]
  },
  "max_20m": {
   "gradient_pct": 22.74856259069537,
   "start_distance_m": 1283.0,
   "end_distance_m": 1303.0,
   "midpoint_distance_m": 1293.0,
   "start_elevation_m": 471.70070199385356,
   "end_elevation_m": 476.25041451199263,
   "start_xy": [
    685700.7501832559,
    4399627.37637165
   ],
   "end_xy": [
    685719.4732567284,
    4399634.200498234
   ]
  },
  "max_25m": {
   "gradient_pct": 22.31918032655267,
   "start_distance_m": 1279.0,
   "end_distance_m": 1304.0,
   "midpoint_distance_m": 1291.5,
   "start_elevation_m": 470.87698088682157,
   "end_elevation_m": 476.45677596845974,
   "start_xy": [
    685696.8136505767,
    4399626.666646023
   ],
   "end_xy": [
    685720.3663773916,
    4399634.6503153965
   ]
  },
  "max_50m": {
   "gradient_pct": 19.502138364246775,
   "start_distance_m": 1260.0,
   "end_distance_m": 1310.0,
   "midpoint_distance_m": 1285.0,
   "start_elevation_m": 467.78608526412756,
   "end_elevation_m": 477.53715444625095,
   "start_xy": [
    685678.1976471327,
    4399628.7063911
   ],
   "end_xy": [
    685725.7322171079,
    4399637.333470867
   ]
  },
  "max_100m": {
   "gradient_pct": 17.63111427450366,
   "start_distance_m": 1214.0,
   "end_distance_m": 1314.0,
   "midpoint_distance_m": 1264.0,
   "start_elevation_m": 460.54151932709243,
   "end_elevation_m": 478.1726336015961,
   "start_xy": [
    685642.1426192386,
    4399656.774633672
   ],
   "end_xy": [
    685729.4435345734,
    4399638.825490529
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.5028656694314577,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 356.29143672461623,
   "end_elevation_m": 356.16629344114466,
   "start_xy": [
    684653.832,
    4399250.156
   ],
   "end_xy": [
    684658.8312248051,
    4399250.067958257
   ]
  },
  "min_10m": {
   "gradient_pct": -0.14598806004244125,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 356.29143672461623,
   "end_elevation_m": 356.276837918612,
   "start_xy": [
    684653.832,
    4399250.156
   ],
   "end_xy": [
    684663.8304496101,
    4399249.979916514
   ]
  },
  "min_20m": {
   "gradient_pct": 1.311723284591153,
   "start_distance_m": 31.0,
   "end_distance_m": 51.0,
   "midpoint_distance_m": 41.0,
   "start_elevation_m": 357.2524619427665,
   "end_elevation_m": 357.51480659968473,
   "start_xy": [
    684684.8271937914,
    4399249.610141192
   ],
   "end_xy": [
    684704.8240930116,
    4399249.257974219
   ]
  },
  "min_25m": {
   "gradient_pct": 1.2709504159972767,
   "start_distance_m": 31.0,
   "end_distance_m": 56.0,
   "midpoint_distance_m": 43.5,
   "start_elevation_m": 357.2524619427665,
   "end_elevation_m": 357.5701995467658,
   "start_xy": [
    684684.8271937914,
    4399249.610141192
   ],
   "end_xy": [
    684709.8233178166,
    4399249.169932475
   ]
  },
  "min_50m": {
   "gradient_pct": 1.6038011375599126,
   "start_distance_m": 28.0,
   "end_distance_m": 78.0,
   "midpoint_distance_m": 53.0,
   "start_elevation_m": 357.1938679569581,
   "end_elevation_m": 357.9957685257381,
   "start_xy": [
    684681.8276589083,
    4399249.662966238
   ],
   "end_xy": [
    684731.8199069588,
    4399248.782548806
   ]
  },
  "min_100m": {
   "gradient_pct": 1.946039175766657,
   "start_distance_m": 29.0,
   "end_distance_m": 129.0,
   "midpoint_distance_m": 79.0,
   "start_elevation_m": 357.21617214923816,
   "end_elevation_m": 359.1622113250048,
   "start_xy": [
    684682.8275038693,
    4399249.645357889
   ],
   "end_xy": [
    684778.1158327096,
    4399264.296079609
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.34366854602672,
   "start_distance_m": 1286.0,
   "end_distance_m": 1288.0,
   "midpoint_distance_m": 1287.0,
   "start_elevation_m": 472.3543229282187,
   "end_elevation_m": 472.84119629913926,
   "start_xy": [
    685703.6387899034,
    4399628.170631646
   ],
   "end_xy": [
    685705.5498420222,
    4399628.760445006
   ]
  },
  "max_3m": {
   "gradient_pct": 23.63976292373688,
   "start_distance_m": 1289.0,
   "end_distance_m": 1292.0,
   "midpoint_distance_m": 1290.5,
   "start_elevation_m": 473.0625330990292,
   "end_elevation_m": 473.77172598674133,
   "start_xy": [
    685706.5053680817,
    4399629.055351686
   ],
   "end_xy": [
    685709.3719462601,
    4399629.940071724
   ]
  }
 },
 "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_x68y440_PA_WesternPA_2019_D20.tif",
   "data/cache/usa/pa-west/USGS_1M_17_x68y441_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T16:26:55+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-band2.osm.pbf",
  "osm_snapshot": "",
  "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": [
   "x68y440",
   "x68y441"
  ],
  "route_summit_trim_m": 840.1,
  "route_summit_trim_loss_m": 72.3,
  "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": "Wellersburg",
  "county": "Pennsylvania"
 }
}