{
 "ocl_version": "0.1.0",
 "name": "Grouse Hill Road",
 "slug": "grouse-hill-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.94782871558425,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 412.0,
   "end_distance_m": 414.0,
   "start_elevation_m": 442.0564794219682,
   "end_elevation_m": 442.5154359962799,
   "min_gradient_pct": -3.880591211486717
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.805940366941968,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 413.0,
   "end_distance_m": 416.0,
   "start_elevation_m": 442.2862631977768,
   "end_elevation_m": 442.97044140878506,
   "min_gradient_pct": -3.8435751919962513
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.66878255676147,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 411.0,
   "end_distance_m": 416.0,
   "start_elevation_m": 441.837002280947,
   "end_elevation_m": 442.97044140878506,
   "min_gradient_pct": -3.8232512265074092
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.21641981544053,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 406.0,
   "end_distance_m": 416.0,
   "start_elevation_m": 440.748799427241,
   "end_elevation_m": 442.97044140878506,
   "min_gradient_pct": -3.628759481812267
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.159523704904984,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 397.0,
   "end_distance_m": 417.0,
   "start_elevation_m": 438.7530987868326,
   "end_elevation_m": 443.1850035278136,
   "min_gradient_pct": -3.446339513352541
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.134149672718195,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 392.0,
   "end_distance_m": 417.0,
   "start_elevation_m": 437.65146610963404,
   "end_elevation_m": 443.1850035278136,
   "min_gradient_pct": -3.382299608774474
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.488964310310052,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 380.0,
   "end_distance_m": 430.0,
   "start_elevation_m": 435.1693051146651,
   "end_elevation_m": 445.91378726982015,
   "min_gradient_pct": -2.830823714510757
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.14814832400623,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 366.0,
   "end_distance_m": 466.0,
   "start_elevation_m": 432.67584662445563,
   "end_elevation_m": 451.82399494846186,
   "min_gradient_pct": -0.9266753497856826
  }
 ],
 "shape": {
  "ascent_concentration": 0.388,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 167.0,
  "shape_class": "sustained"
 },
 "length_m": 965.2008611422561,
 "start_elevation_m": 401.08186574658214,
 "end_elevation_m": 485.10139782195813,
 "endpoint_gain_m": 84.01953207537599,
 "overall_gradient_pct": 8.704875374431806,
 "accumulated_ascent_m": 85.95280541883216,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.66878255676147,
   "start_distance_m": 411.0,
   "end_distance_m": 416.0,
   "midpoint_distance_m": 413.5,
   "start_elevation_m": 441.837002280947,
   "end_elevation_m": 442.97044140878506,
   "start_xy": [
    444311.42822743085,
    4598766.563020992
   ],
   "end_xy": [
    444311.9343227679,
    4598761.588700184
   ]
  },
  "max_10m": {
   "gradient_pct": 22.21641981544053,
   "start_distance_m": 406.0,
   "end_distance_m": 416.0,
   "midpoint_distance_m": 411.0,
   "start_elevation_m": 440.748799427241,
   "end_elevation_m": 442.97044140878506,
   "start_xy": [
    444310.9221320938,
    4598771.537341801
   ],
   "end_xy": [
    444311.9343227679,
    4598761.588700184
   ]
  },
  "max_20m": {
   "gradient_pct": 22.159523704904984,
   "start_distance_m": 397.0,
   "end_distance_m": 417.0,
   "midpoint_distance_m": 407.0,
   "start_elevation_m": 438.7530987868326,
   "end_elevation_m": 443.1850035278136,
   "start_xy": [
    444311.59844338347,
    4598780.50054052
   ],
   "end_xy": [
    444312.0355418353,
    4598760.593836022
   ]
  },
  "max_25m": {
   "gradient_pct": 22.134149672718195,
   "start_distance_m": 392.0,
   "end_distance_m": 417.0,
   "midpoint_distance_m": 404.5,
   "start_elevation_m": 437.65146610963404,
   "end_elevation_m": 443.1850035278136,
   "start_xy": [
    444312.0454553227,
    4598785.480518465
   ],
   "end_xy": [
    444312.0355418353,
    4598760.593836022
   ]
  },
  "max_50m": {
   "gradient_pct": 21.488964310310052,
   "start_distance_m": 380.0,
   "end_distance_m": 430.0,
   "midpoint_distance_m": 405.0,
   "start_elevation_m": 435.1693051146651,
   "end_elevation_m": 445.91378726982015,
   "start_xy": [
    444313.3828984129,
    4598797.404806955
   ],
   "end_xy": [
    444316.48908152635,
    4598748.410962759
   ]
  },
  "max_100m": {
   "gradient_pct": 19.14814832400623,
   "start_distance_m": 366.0,
   "end_distance_m": 466.0,
   "midpoint_distance_m": 416.0,
   "start_elevation_m": 432.67584662445563,
   "end_elevation_m": 451.82399494846186,
   "start_xy": [
    444315.0417700076,
    4598811.30617901
   ],
   "end_xy": [
    444342.9908833548,
    4598724.4058065545
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.8232512265074092,
   "start_distance_m": 576.0,
   "end_distance_m": 581.0,
   "midpoint_distance_m": 578.5,
   "start_elevation_m": 458.0053139928978,
   "end_elevation_m": 457.81415143157244,
   "start_xy": [
    444439.25426382734,
    4598671.285802925
   ],
   "end_xy": [
    444443.63472358265,
    4598668.8750826325
   ]
  },
  "min_10m": {
   "gradient_pct": -3.628759481812267,
   "start_distance_m": 575.0,
   "end_distance_m": 585.0,
   "midpoint_distance_m": 580.0,
   "start_elevation_m": 458.0367734105513,
   "end_elevation_m": 457.67389746237006,
   "start_xy": [
    444438.37817187625,
    4598671.767946984
   ],
   "end_xy": [
    444447.1390913869,
    4598666.946506398
   ]
  },
  "min_20m": {
   "gradient_pct": -3.446339513352541,
   "start_distance_m": 575.0,
   "end_distance_m": 595.0,
   "midpoint_distance_m": 585.0,
   "start_elevation_m": 458.0367734105513,
   "end_elevation_m": 457.3475055078808,
   "start_xy": [
    444438.37817187625,
    4598671.767946984
   ],
   "end_xy": [
    444456.235061441,
    4598662.796729058
   ]
  },
  "min_25m": {
   "gradient_pct": -3.382299608774474,
   "start_distance_m": 568.0,
   "end_distance_m": 593.0,
   "midpoint_distance_m": 580.5,
   "start_elevation_m": 458.25630868893046,
   "end_elevation_m": 457.41073378673684,
   "start_xy": [
    444432.2455282188,
    4598675.142955394
   ],
   "end_xy": [
    444454.41079141625,
    4598663.616508831
   ]
  },
  "min_50m": {
   "gradient_pct": -2.830823714510757,
   "start_distance_m": 553.0,
   "end_distance_m": 603.0,
   "midpoint_distance_m": 578.0,
   "start_elevation_m": 458.5703344794746,
   "end_elevation_m": 457.1549226222192,
   "start_xy": [
    444419.0781441469,
    4598682.327363168
   ],
   "end_xy": [
    444463.53214154026,
    4598659.517609965
   ]
  },
  "min_100m": {
   "gradient_pct": -0.9266753497856826,
   "start_distance_m": 525.0,
   "end_distance_m": 625.0,
   "midpoint_distance_m": 575.0,
   "start_elevation_m": 458.21603729741236,
   "end_elevation_m": 457.2893619476267,
   "start_xy": [
    444394.42872999894,
    4598695.609169601
   ],
   "end_xy": [
    444483.8870636306,
    4598651.287812737
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.94782871558425,
   "start_distance_m": 412.0,
   "end_distance_m": 414.0,
   "midpoint_distance_m": 413.0,
   "start_elevation_m": 442.0564794219682,
   "end_elevation_m": 442.5154359962799,
   "start_xy": [
    444311.52944649826,
    4598765.56815683
   ],
   "end_xy": [
    444311.7318846331,
    4598763.578428507
   ]
  },
  "max_3m": {
   "gradient_pct": 22.805940366941968,
   "start_distance_m": 413.0,
   "end_distance_m": 416.0,
   "midpoint_distance_m": 414.5,
   "start_elevation_m": 442.2862631977768,
   "end_elevation_m": 442.97044140878506,
   "start_xy": [
    444311.63066556567,
    4598764.573292669
   ],
   "end_xy": [
    444311.9343227679,
    4598761.588700184
   ]
  }
 },
 "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_start_earlier"
  ]
 },
 "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_x44y460_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T13:53:09+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-band4.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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x44y460"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_Northcentral_2019_B19: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "North Abington",
  "county": "Pennsylvania"
 }
}