{
 "ocl_version": "0.1.0",
 "name": "Fairview Lane",
 "slug": "fairview-lane-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.05744046642917,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 163.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 224.41297528951702,
   "end_elevation_m": 224.9141240988456,
   "min_gradient_pct": -4.934838780894779
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.93143052566514,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 162.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 224.16618118307565,
   "end_elevation_m": 224.9141240988456,
   "min_gradient_pct": -4.791473929484861
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.773567780020244,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 162.0,
   "end_distance_m": 167.0,
   "start_elevation_m": 224.16618118307565,
   "end_elevation_m": 225.35485957207666,
   "min_gradient_pct": -2.381668240191175
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.515320547052852,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 172.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 226.23768254243078,
   "end_elevation_m": 228.38921459713606,
   "min_gradient_pct": 0.5596890004483157
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.11516707030205,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 224.16618118307565,
   "end_elevation_m": 228.38921459713606,
   "min_gradient_pct": 0.9558930250159392
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.704128886870762,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 152.0,
   "end_distance_m": 177.0,
   "start_elevation_m": 222.21340980634847,
   "end_elevation_m": 227.38944202806616,
   "min_gradient_pct": 1.1501923978499917
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.371421665212324,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 135.0,
   "end_distance_m": 185.0,
   "start_elevation_m": 219.27864384261824,
   "end_elevation_m": 228.9643546752244,
   "min_gradient_pct": 1.9121441940062596
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.08613724641026,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 86.0,
   "end_distance_m": 186.0,
   "start_elevation_m": 211.03648785962122,
   "end_elevation_m": 229.12262510603148,
   "min_gradient_pct": 5.891907024943805
  }
 ],
 "shape": {
  "ascent_concentration": 0.399,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 172.0,
  "shape_class": "sustained"
 },
 "length_m": 289.0902142203186,
 "start_elevation_m": 202.36887997157436,
 "end_elevation_m": 235.42943761870652,
 "endpoint_gain_m": 33.06055764713216,
 "overall_gradient_pct": 11.436069441609105,
 "accumulated_ascent_m": 33.22590951782226,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.773567780020244,
   "start_distance_m": 162.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 164.5,
   "start_elevation_m": 224.16618118307565,
   "end_elevation_m": 225.35485957207666,
   "start_xy": [
    271934.66667764855,
    4579177.370716434
   ],
   "end_xy": [
    271934.91508363717,
    4579182.364542068
   ]
  },
  "max_10m": {
   "gradient_pct": 21.515320547052852,
   "start_distance_m": 172.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 177.0,
   "start_elevation_m": 226.23768254243078,
   "end_elevation_m": 228.38921459713606,
   "start_xy": [
    271934.6851244936,
    4579187.354863221
   ],
   "end_xy": [
    271933.3703250812,
    4579197.207692856
   ]
  },
  "max_20m": {
   "gradient_pct": 21.11516707030205,
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 224.16618118307565,
   "end_elevation_m": 228.38921459713606,
   "start_xy": [
    271934.66667764855,
    4579177.370716434
   ],
   "end_xy": [
    271933.3703250812,
    4579197.207692856
   ]
  },
  "max_25m": {
   "gradient_pct": 20.704128886870762,
   "start_distance_m": 152.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 164.5,
   "start_elevation_m": 222.21340980634847,
   "end_elevation_m": 227.38944202806616,
   "start_xy": [
    271934.1698656713,
    4579167.383065166
   ],
   "end_xy": [
    271934.363579996,
    4579192.344513422
   ]
  },
  "max_50m": {
   "gradient_pct": 19.371421665212324,
   "start_distance_m": 135.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 219.27864384261824,
   "end_elevation_m": 228.9643546752244,
   "start_xy": [
    271933.3252853099,
    4579150.404058009
   ],
   "end_xy": [
    271932.4612862609,
    4579200.066652181
   ]
  },
  "max_100m": {
   "gradient_pct": 18.08613724641026,
   "start_distance_m": 86.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 211.03648785962122,
   "end_elevation_m": 229.12262510603148,
   "start_xy": [
    271932.21501982614,
    4579101.438105727
   ],
   "end_xy": [
    271932.1582733208,
    4579201.019638623
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.381668240191175,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 202.36887997157436,
   "end_elevation_m": 202.2497965595648,
   "start_xy": [
    271927.843,
    4579015.566
   ],
   "end_xy": [
    271928.1291642118,
    4579020.557804287
   ]
  },
  "min_10m": {
   "gradient_pct": 0.5596890004483157,
   "start_distance_m": 256.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 261.0,
   "start_elevation_m": 234.7215022480733,
   "end_elevation_m": 234.77747114811814,
   "start_xy": [
    271881.6894855847,
    4579247.871684132
   ],
   "end_xy": [
    271873.50408864795,
    4579253.616183848
   ]
  },
  "min_20m": {
   "gradient_pct": 0.9558930250159392,
   "start_distance_m": 249.0,
   "end_distance_m": 269.0,
   "midpoint_distance_m": 259.0,
   "start_elevation_m": 234.6310978581174,
   "end_elevation_m": 234.8222764631206,
   "start_xy": [
    271887.4192634404,
    4579243.850534331
   ],
   "end_xy": [
    271871.0313216061,
    4579255.313668606
   ]
  },
  "min_25m": {
   "gradient_pct": 1.1501923978499917,
   "start_distance_m": 244.0,
   "end_distance_m": 269.0,
   "midpoint_distance_m": 256.5,
   "start_elevation_m": 234.5347283636581,
   "end_elevation_m": 234.8222764631206,
   "start_xy": [
    271891.5119619088,
    4579240.978284473
   ],
   "end_xy": [
    271871.0313216061,
    4579255.313668606
   ]
  },
  "min_50m": {
   "gradient_pct": 1.9121441940062596,
   "start_distance_m": 236.0,
   "end_distance_m": 286.0,
   "midpoint_distance_m": 261.0,
   "start_elevation_m": 234.20268741200772,
   "end_elevation_m": 235.15875950901085,
   "start_xy": [
    271898.0602794582,
    4579236.3826847
   ],
   "end_xy": [
    271858.9041828225,
    4579266.520160229
   ]
  },
  "min_100m": {
   "gradient_pct": 5.891907024943805,
   "start_distance_m": 189.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 239.0,
   "start_elevation_m": 229.53048093364941,
   "end_elevation_m": 235.42238795859322,
   "start_xy": [
    271931.1569408835,
    4579203.838808197
   ],
   "end_xy": [
    271858.2079370887,
    4579269.438248966
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.05744046642917,
   "start_distance_m": 163.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 164.0,
   "start_elevation_m": 224.41297528951702,
   "end_elevation_m": 224.9141240988456,
   "start_xy": [
    271934.7163588463,
    4579178.369481561
   ],
   "end_xy": [
    271934.81572124176,
    4579180.367011814
   ]
  },
  "max_3m": {
   "gradient_pct": 24.93143052566514,
   "start_distance_m": 162.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 163.5,
   "start_elevation_m": 224.16618118307565,
   "end_elevation_m": 224.9141240988456,
   "start_xy": [
    271934.66667764855,
    4579177.370716434
   ],
   "end_xy": [
    271934.81572124176,
    4579180.367011814
   ]
  }
 },
 "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_x27y458_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T12:36:34+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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x27y458"
  ],
  "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": "Chapman",
  "county": "Pennsylvania"
 }
}