{
 "ocl_version": "0.1.0",
 "name": "Harding Way",
 "slug": "harding-way",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.968953077702395,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 146.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 307.37499844550723,
   "end_elevation_m": 307.8943775070613,
   "min_gradient_pct": -8.359377272259394
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.568811544135844,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 145.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 307.1573131607372,
   "end_elevation_m": 307.8943775070613,
   "min_gradient_pct": -8.32569542035723
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.690073913612423,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 144.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 306.96230122621347,
   "end_elevation_m": 308.0968049218941,
   "min_gradient_pct": -7.99007905658641
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.79006296269597,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 407.0,
   "end_distance_m": 417.0,
   "start_elevation_m": 317.87879066776526,
   "end_elevation_m": 319.95779696403486,
   "min_gradient_pct": -7.744301391836075
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.41429791476645,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 407.0,
   "end_distance_m": 427.0,
   "start_elevation_m": 317.87879066776526,
   "end_elevation_m": 321.96165025071855,
   "min_gradient_pct": -7.081709784187922
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.047188330866447,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 404.0,
   "end_distance_m": 429.0,
   "start_elevation_m": 317.3088003959922,
   "end_elevation_m": 322.3205974787088,
   "min_gradient_pct": -6.864791640657586
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.58874286071955,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 386.0,
   "end_distance_m": 436.0,
   "start_elevation_m": 315.16151111924364,
   "end_elevation_m": 323.4558825496034,
   "min_gradient_pct": -5.668703296445642
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.441442591783357,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 63.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 296.43695233370863,
   "end_elevation_m": 309.878394925492,
   "min_gradient_pct": -1.7705444745434988
  }
 ],
 "shape": {
  "ascent_concentration": 0.425,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 54.0,
  "shape_class": "sustained"
 },
 "length_m": 441.68637074873357,
 "start_elevation_m": 292.75832214355285,
 "end_elevation_m": 323.69406022399573,
 "endpoint_gain_m": 30.93573808044289,
 "overall_gradient_pct": 7.004005586136051,
 "accumulated_ascent_m": 33.86878180462452,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.690073913612423,
   "start_distance_m": 144.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 146.5,
   "start_elevation_m": 306.96230122621347,
   "end_elevation_m": 308.0968049218941,
   "start_xy": [
    594649.6958256694,
    4471730.71858147
   ],
   "end_xy": [
    594654.6907137024,
    4471730.492542671
   ]
  },
  "max_10m": {
   "gradient_pct": 20.79006296269597,
   "start_distance_m": 407.0,
   "end_distance_m": 417.0,
   "midpoint_distance_m": 412.0,
   "start_elevation_m": 317.87879066776526,
   "end_elevation_m": 319.95779696403486,
   "start_xy": [
    594806.8990245315,
    4471574.26995898
   ],
   "end_xy": [
    594798.1302542725,
    4471569.516572055
   ]
  },
  "max_20m": {
   "gradient_pct": 20.41429791476645,
   "start_distance_m": 407.0,
   "end_distance_m": 427.0,
   "midpoint_distance_m": 417.0,
   "start_elevation_m": 317.87879066776526,
   "end_elevation_m": 321.96165025071855,
   "start_xy": [
    594806.8990245315,
    4471574.26995898
   ],
   "end_xy": [
    594788.8942612218,
    4471565.682979437
   ]
  },
  "max_25m": {
   "gradient_pct": 20.047188330866447,
   "start_distance_m": 404.0,
   "end_distance_m": 429.0,
   "midpoint_distance_m": 416.5,
   "start_elevation_m": 317.3088003959922,
   "end_elevation_m": 322.3205974787088,
   "start_xy": [
    594808.2761715538,
    4471576.851838559
   ],
   "end_xy": [
    594787.0470626116,
    4471564.916260912
   ]
  },
  "max_50m": {
   "gradient_pct": 16.58874286071955,
   "start_distance_m": 386.0,
   "end_distance_m": 436.0,
   "midpoint_distance_m": 411.0,
   "start_elevation_m": 315.16151111924364,
   "end_elevation_m": 323.4558825496034,
   "start_xy": [
    594804.5214796728,
    4471593.69991348
   ],
   "end_xy": [
    594780.5818674761,
    4471562.23274608
   ]
  },
  "max_100m": {
   "gradient_pct": 13.441442591783357,
   "start_distance_m": 63.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 296.43695233370863,
   "end_elevation_m": 309.878394925492,
   "start_xy": [
    594610.0367115112,
    4471782.554400273
   ],
   "end_xy": [
    594668.6764001945,
    4471729.859634033
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.99007905658641,
   "start_distance_m": 216.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 218.5,
   "start_elevation_m": 309.3163692082506,
   "end_elevation_m": 308.91686525542127,
   "start_xy": [
    594721.6222133433,
    4471727.463622761
   ],
   "end_xy": [
    594726.6171013762,
    4471727.237583962
   ]
  },
  "min_10m": {
   "gradient_pct": -7.744301391836075,
   "start_distance_m": 211.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 216.0,
   "start_elevation_m": 309.6912953946049,
   "end_elevation_m": 308.91686525542127,
   "start_xy": [
    594716.6273253104,
    4471727.689661561
   ],
   "end_xy": [
    594726.6171013762,
    4471727.237583962
   ]
  },
  "min_20m": {
   "gradient_pct": -7.081709784187922,
   "start_distance_m": 206.0,
   "end_distance_m": 226.0,
   "midpoint_distance_m": 216.0,
   "start_elevation_m": 310.0202122504115,
   "end_elevation_m": 308.6038702935739,
   "start_xy": [
    594711.6324372775,
    4471727.91570036
   ],
   "end_xy": [
    594731.6119894091,
    4471727.011545163
   ]
  },
  "min_25m": {
   "gradient_pct": -6.864791640657586,
   "start_distance_m": 206.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 218.5,
   "start_elevation_m": 310.0202122504115,
   "end_elevation_m": 308.3040143402471,
   "start_xy": [
    594711.6324372775,
    4471727.91570036
   ],
   "end_xy": [
    594736.606877442,
    4471726.785506364
   ]
  },
  "min_50m": {
   "gradient_pct": -5.668703296445642,
   "start_distance_m": 192.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 310.639000953515,
   "end_elevation_m": 307.8046493052922,
   "start_xy": [
    594697.6467507854,
    4471728.548608998
   ],
   "end_xy": [
    594747.2688615412,
    4471725.675293917
   ]
  },
  "min_100m": {
   "gradient_pct": -1.7705444745434988,
   "start_distance_m": 169.0,
   "end_distance_m": 269.0,
   "midpoint_distance_m": 219.0,
   "start_elevation_m": 310.32067557553864,
   "end_elevation_m": 308.55013110099515,
   "start_xy": [
    594674.670265834,
    4471729.5883874735
   ],
   "end_xy": [
    594758.6373089565,
    4471701.327246801
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.968953077702395,
   "start_distance_m": 146.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 307.37499844550723,
   "end_elevation_m": 307.8943775070613,
   "start_xy": [
    594651.6937808826,
    4471730.62816595
   ],
   "end_xy": [
    594653.6917360958,
    4471730.53775043
   ]
  },
  "max_3m": {
   "gradient_pct": 24.568811544135844,
   "start_distance_m": 145.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 146.5,
   "start_elevation_m": 307.1573131607372,
   "end_elevation_m": 307.8943775070613,
   "start_xy": [
    594650.6948032761,
    4471730.67337371
   ],
   "end_xy": [
    594653.6917360958,
    4471730.53775043
   ]
  }
 },
 "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": [
   "may_continue_beyond_end"
  ]
 },
 "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_x59y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T13:24:06+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-band1.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": [
   "x59y448"
  ],
  "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": "West Mifflin",
  "county": "Pennsylvania"
 }
}