{
 "ocl_version": "0.1.0",
 "name": "Krushka Road",
 "slug": "krushka-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 14.835806747629476,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1165.0,
   "end_distance_m": 1167.0,
   "start_elevation_m": 268.7164959048171,
   "end_elevation_m": 269.0132120397697,
   "min_gradient_pct": -2.896862151293078
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 14.615098990600472,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1165.0,
   "end_distance_m": 1168.0,
   "start_elevation_m": 268.7164959048171,
   "end_elevation_m": 269.15494887453514,
   "min_gradient_pct": -2.522039655925331
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 14.016099058638929,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1165.0,
   "end_distance_m": 1170.0,
   "start_elevation_m": 268.7164959048171,
   "end_elevation_m": 269.41730085774907,
   "min_gradient_pct": -2.3028682942867817
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 13.747119192213404,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1165.0,
   "end_distance_m": 1175.0,
   "start_elevation_m": 268.7164959048171,
   "end_elevation_m": 270.09120782403846,
   "min_gradient_pct": -2.0935439873881023
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 13.25889822592984,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1159.0,
   "end_distance_m": 1179.0,
   "start_elevation_m": 267.9351735171353,
   "end_elevation_m": 270.58695316232127,
   "min_gradient_pct": -1.7199409921019537
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 13.101627127405209,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1160.0,
   "end_distance_m": 1185.0,
   "start_elevation_m": 268.0651705415718,
   "end_elevation_m": 271.3405773234231,
   "min_gradient_pct": -1.6549928651817254
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 12.474026914090018,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1135.0,
   "end_distance_m": 1185.0,
   "start_elevation_m": 265.10356386637807,
   "end_elevation_m": 271.3405773234231,
   "min_gradient_pct": -1.5868446493156512
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.197608073505478,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1103.0,
   "end_distance_m": 1203.0,
   "start_elevation_m": 261.9303469722023,
   "end_elevation_m": 273.1279550457078,
   "min_gradient_pct": -0.569606513079691
  }
 ],
 "shape": {
  "ascent_concentration": 0.415,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 82.0,
  "shape_class": "sustained"
 },
 "length_m": 1298.3065171758815,
 "start_elevation_m": 225.1858208839779,
 "end_elevation_m": 275.84683284363894,
 "endpoint_gain_m": 50.66101195966104,
 "overall_gradient_pct": 3.902084083338079,
 "accumulated_ascent_m": 52.61682141935884,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 14.016099058638929,
   "start_distance_m": 1165.0,
   "end_distance_m": 1170.0,
   "midpoint_distance_m": 1167.5,
   "start_elevation_m": 268.7164959048171,
   "end_elevation_m": 269.41730085774907,
   "start_xy": [
    402125.5172756774,
    4561416.669968439
   ],
   "end_xy": [
    402121.94793489634,
    4561420.171369072
   ]
  },
  "max_10m": {
   "gradient_pct": 13.747119192213404,
   "start_distance_m": 1165.0,
   "end_distance_m": 1175.0,
   "midpoint_distance_m": 1170.0,
   "start_elevation_m": 268.7164959048171,
   "end_elevation_m": 270.09120782403846,
   "start_xy": [
    402125.5172756774,
    4561416.669968439
   ],
   "end_xy": [
    402118.37859411526,
    4561423.672769704
   ]
  },
  "max_20m": {
   "gradient_pct": 13.25889822592984,
   "start_distance_m": 1159.0,
   "end_distance_m": 1179.0,
   "midpoint_distance_m": 1169.0,
   "start_elevation_m": 267.9351735171353,
   "end_elevation_m": 270.58695316232127,
   "start_xy": [
    402129.8004846147,
    4561412.46828768
   ],
   "end_xy": [
    402115.31229116186,
    4561426.2324793935
   ]
  },
  "max_25m": {
   "gradient_pct": 13.101627127405209,
   "start_distance_m": 1160.0,
   "end_distance_m": 1185.0,
   "midpoint_distance_m": 1172.5,
   "start_elevation_m": 268.0651705415718,
   "end_elevation_m": 271.3405773234231,
   "start_xy": [
    402129.0866164585,
    4561413.168567807
   ],
   "end_xy": [
    402110.57223593805,
    4561429.911049289
   ]
  },
  "max_50m": {
   "gradient_pct": 12.474026914090018,
   "start_distance_m": 1135.0,
   "end_distance_m": 1185.0,
   "midpoint_distance_m": 1160.0,
   "start_elevation_m": 265.10356386637807,
   "end_elevation_m": 271.3405773234231,
   "start_xy": [
    402144.45993500855,
    4561393.491681493
   ],
   "end_xy": [
    402110.57223593805,
    4561429.911049289
   ]
  },
  "max_100m": {
   "gradient_pct": 11.197608073505478,
   "start_distance_m": 1103.0,
   "end_distance_m": 1203.0,
   "midpoint_distance_m": 1153.0,
   "start_elevation_m": 261.9303469722023,
   "end_elevation_m": 273.1279550457078,
   "start_xy": [
    402163.37779198977,
    4561367.690503037
   ],
   "end_xy": [
    402097.8107894618,
    4561442.404693951
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.3028682942867817,
   "start_distance_m": 761.0,
   "end_distance_m": 766.0,
   "midpoint_distance_m": 763.5,
   "start_elevation_m": 246.89673023305792,
   "end_elevation_m": 246.78158681834358,
   "start_xy": [
    402285.910741533,
    4561053.226811693
   ],
   "end_xy": [
    402286.0687903838,
    4561058.224313124
   ]
  },
  "min_10m": {
   "gradient_pct": -2.0935439873881023,
   "start_distance_m": 761.0,
   "end_distance_m": 771.0,
   "midpoint_distance_m": 766.0,
   "start_elevation_m": 246.89673023305792,
   "end_elevation_m": 246.6873758343191,
   "start_xy": [
    402285.910741533,
    4561053.226811693
   ],
   "end_xy": [
    402286.09974416444,
    4561063.211338988
   ]
  },
  "min_20m": {
   "gradient_pct": -1.7199409921019537,
   "start_distance_m": 751.0,
   "end_distance_m": 771.0,
   "midpoint_distance_m": 761.0,
   "start_elevation_m": 247.0313640327395,
   "end_elevation_m": 246.6873758343191,
   "start_xy": [
    402284.32569474855,
    4561043.381638228
   ],
   "end_xy": [
    402286.09974416444,
    4561063.211338988
   ]
  },
  "min_25m": {
   "gradient_pct": -1.6549928651817254,
   "start_distance_m": 747.0,
   "end_distance_m": 772.0,
   "midpoint_distance_m": 759.5,
   "start_elevation_m": 247.0915446701524,
   "end_elevation_m": 246.67779645385696,
   "start_xy": [
    402283.51752129005,
    4561039.4641319215
   ],
   "end_xy": [
    402285.9049089608,
    4561064.19217498
   ]
  },
  "min_50m": {
   "gradient_pct": -1.5868446493156512,
   "start_distance_m": 722.0,
   "end_distance_m": 772.0,
   "midpoint_distance_m": 747.0,
   "start_elevation_m": 247.47121877851478,
   "end_elevation_m": 246.67779645385696,
   "start_xy": [
    402276.3770621401,
    4561015.527834405
   ],
   "end_xy": [
    402285.9049089608,
    4561064.19217498
   ]
  },
  "min_100m": {
   "gradient_pct": -0.569606513079691,
   "start_distance_m": 696.0,
   "end_distance_m": 796.0,
   "midpoint_distance_m": 746.0,
   "start_elevation_m": 247.41478804585734,
   "end_elevation_m": 246.84518153277764,
   "start_xy": [
    402268.453840764,
    4560990.764503389
   ],
   "end_xy": [
    402279.0358849796,
    4561087.054796349
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 14.835806747629476,
   "start_distance_m": 1165.0,
   "end_distance_m": 1167.0,
   "midpoint_distance_m": 1166.0,
   "start_elevation_m": 268.7164959048171,
   "end_elevation_m": 269.0132120397697,
   "start_xy": [
    402125.5172756774,
    4561416.669968439
   ],
   "end_xy": [
    402124.08953936497,
    4561418.070528693
   ]
  },
  "max_3m": {
   "gradient_pct": 14.615098990600472,
   "start_distance_m": 1165.0,
   "end_distance_m": 1168.0,
   "midpoint_distance_m": 1166.5,
   "start_elevation_m": 268.7164959048171,
   "end_elevation_m": 269.15494887453514,
   "start_xy": [
    402125.5172756774,
    4561416.669968439
   ],
   "end_xy": [
    402123.3756712088,
    4561418.770808819
   ]
  }
 },
 "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": 0.016,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ]
  ],
  "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_x40y457_PA_3_County_South_Central_2018_D18.tif"
  ],
  "calculated_at": "2026-09-15T06:51:27+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "run_id": "reline-campaign-260915",
  "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_3_County_South_Central_2018_D18 (collected 2018)",
  "elevation_tile_ids": [
   "x40y457"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_3_County_South_Central_2018_D18: HTTP Error 404: Not Found",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ],
   [
    0.0,
    15.0
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Union",
  "county": "Pennsylvania"
 }
}