{
 "ocl_version": "0.1.0",
 "name": "Champion Trail",
 "slug": "champion-trail",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.247950083385717,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 180.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 200.7539962693994,
   "end_elevation_m": 201.25895527106712,
   "min_gradient_pct": -4.281448296903534
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.591668605003747,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 293.0,
   "end_distance_m": 296.0,
   "start_elevation_m": 226.36417307616554,
   "end_elevation_m": 227.10192313431565,
   "min_gradient_pct": -3.1242702765913086
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.965224153620284,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 211.0,
   "end_distance_m": 216.0,
   "start_elevation_m": 207.75703172922903,
   "end_elevation_m": 208.95529293691004,
   "min_gradient_pct": -2.1212296241094464
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.602368693308335,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 289.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 225.42924430987625,
   "end_elevation_m": 227.7894811792071,
   "min_gradient_pct": -0.37962422333805534
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.36096861372539,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 241.0,
   "end_distance_m": 261.0,
   "start_elevation_m": 214.554003332199,
   "end_elevation_m": 219.22619705494407,
   "min_gradient_pct": 0.10326659139053618
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.227297301598924,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 241.0,
   "end_distance_m": 266.0,
   "start_elevation_m": 214.554003332199,
   "end_elevation_m": 220.36082765759872,
   "min_gradient_pct": 0.22337823064708573
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.93833065143008,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 211.0,
   "end_distance_m": 261.0,
   "start_elevation_m": 207.75703172922903,
   "end_elevation_m": 219.22619705494407,
   "min_gradient_pct": 1.190822476463154
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.778643266714084,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 201.0,
   "end_distance_m": 301.0,
   "start_elevation_m": 205.4799994893104,
   "end_elevation_m": 228.25864275602447,
   "min_gradient_pct": 2.5870460835354834
  }
 ],
 "shape": {
  "ascent_concentration": 0.425,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 188.0,
  "shape_class": "sustained"
 },
 "length_m": 325.3752284937054,
 "start_elevation_m": 189.57329016112712,
 "end_elevation_m": 233.49654412229836,
 "endpoint_gain_m": 43.92325396117124,
 "overall_gradient_pct": 13.49926181059016,
 "accumulated_ascent_m": 44.10286306712189,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.965224153620284,
   "start_distance_m": 211.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 213.5,
   "start_elevation_m": 207.75703172922903,
   "end_elevation_m": 208.95529293691004,
   "start_xy": [
    296658.4354633739,
    4403643.058838872
   ],
   "end_xy": [
    296663.25707282894,
    4403641.735176429
   ]
  },
  "max_10m": {
   "gradient_pct": 23.602368693308335,
   "start_distance_m": 289.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 294.0,
   "start_elevation_m": 225.42924430987625,
   "end_elevation_m": 227.7894811792071,
   "start_xy": [
    296733.6525708729,
    4403622.4097047625
   ],
   "end_xy": [
    296743.295789783,
    4403619.762379876
   ]
  },
  "max_20m": {
   "gradient_pct": 23.36096861372539,
   "start_distance_m": 241.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 251.0,
   "start_elevation_m": 214.554003332199,
   "end_elevation_m": 219.22619705494407,
   "start_xy": [
    296687.3651201043,
    4403635.116864215
   ],
   "end_xy": [
    296706.6515579245,
    4403629.822214442
   ]
  },
  "max_25m": {
   "gradient_pct": 23.227297301598924,
   "start_distance_m": 241.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 253.5,
   "start_elevation_m": 214.554003332199,
   "end_elevation_m": 220.36082765759872,
   "start_xy": [
    296687.3651201043,
    4403635.116864215
   ],
   "end_xy": [
    296711.4731673796,
    4403628.498552
   ]
  },
  "max_50m": {
   "gradient_pct": 22.93833065143008,
   "start_distance_m": 211.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 236.0,
   "start_elevation_m": 207.75703172922903,
   "end_elevation_m": 219.22619705494407,
   "start_xy": [
    296658.4354633739,
    4403643.058838872
   ],
   "end_xy": [
    296706.6515579245,
    4403629.822214442
   ]
  },
  "max_100m": {
   "gradient_pct": 22.778643266714084,
   "start_distance_m": 201.0,
   "end_distance_m": 301.0,
   "midpoint_distance_m": 251.0,
   "start_elevation_m": 205.4799994893104,
   "end_elevation_m": 228.25864275602447,
   "start_xy": [
    296648.79224446375,
    4403645.7061637575
   ],
   "end_xy": [
    296745.22443356505,
    4403619.2329148995
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.1212296241094464,
   "start_distance_m": 129.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 131.5,
   "start_elevation_m": 193.46523543568105,
   "end_elevation_m": 193.35917395447558,
   "start_xy": [
    296579.3712240894,
    4403664.771424541
   ],
   "end_xy": [
    296584.1826777659,
    4403663.443240494
   ]
  },
  "min_10m": {
   "gradient_pct": -0.37962422333805534,
   "start_distance_m": 89.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 192.82876638999818,
   "end_elevation_m": 192.79080396766437,
   "start_xy": [
    296597.2819017997,
    4403700.533947882
   ],
   "end_xy": [
    296592.8270783127,
    4403691.584480822
   ]
  },
  "min_20m": {
   "gradient_pct": 0.10326659139053618,
   "start_distance_m": 89.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 99.0,
   "start_elevation_m": 192.82876638999818,
   "end_elevation_m": 192.8494197082763,
   "start_xy": [
    296597.2819017997,
    4403700.533947882
   ],
   "end_xy": [
    296588.3417935716,
    4403682.646795395
   ]
  },
  "min_25m": {
   "gradient_pct": 0.22337823064708573,
   "start_distance_m": 85.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 97.5,
   "start_elevation_m": 192.79709511419776,
   "end_elevation_m": 192.85293967185953,
   "start_xy": [
    296598.36034291313,
    4403704.385825965
   ],
   "end_xy": [
    296587.89326509746,
    4403681.753026852
   ]
  },
  "min_50m": {
   "gradient_pct": 1.190822476463154,
   "start_distance_m": 84.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 192.763762716244,
   "end_elevation_m": 193.35917395447558,
   "start_xy": [
    296598.6299531915,
    4403705.348795486
   ],
   "end_xy": [
    296584.1826777659,
    4403663.443240494
   ]
  },
  "min_100m": {
   "gradient_pct": 2.5870460835354834,
   "start_distance_m": 35.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 85.0,
   "start_elevation_m": 190.80716972996169,
   "end_elevation_m": 193.39421581349717,
   "start_xy": [
    296602.0627520431,
    4403753.942317352
   ],
   "end_xy": [
    296585.1469996569,
    4403663.178508005
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.247950083385717,
   "start_distance_m": 180.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 181.0,
   "start_elevation_m": 200.7539962693994,
   "end_elevation_m": 201.25895527106712,
   "start_xy": [
    296628.5414847525,
    4403651.265546018
   ],
   "end_xy": [
    296630.47012853454,
    4403650.736081041
   ]
  },
  "max_3m": {
   "gradient_pct": 24.591668605003747,
   "start_distance_m": 293.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 294.5,
   "start_elevation_m": 226.36417307616554,
   "end_elevation_m": 227.10192313431565,
   "start_xy": [
    296737.50985843694,
    4403621.350774808
   ],
   "end_xy": [
    296740.40282411,
    4403620.556577343
   ]
  }
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_one_meter_x29y441_PA_South_Central_B1_2017.tif"
  ],
  "calculated_at": "2026-09-07T12:53:59+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-band3.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_South_Central_B1_2017 (collected 2017)",
  "elevation_tile_ids": [
   "x29y441"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Carroll Valley",
  "county": "Pennsylvania"
 }
}