{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (40.0617, -76.8674)",
 "slug": "discovered-lane-40-0617-76-8674",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.14453785346973,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 72.0,
   "end_distance_m": 74.0,
   "start_elevation_m": 136.4630568771492,
   "end_elevation_m": 136.9659476342186,
   "min_gradient_pct": -1.078450729463043
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.260976520178207,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 72.0,
   "end_distance_m": 75.0,
   "start_elevation_m": 136.4630568771492,
   "end_elevation_m": 137.19088617275455,
   "min_gradient_pct": -0.6600220869723709
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.985111211144385,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 72.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 136.4630568771492,
   "end_elevation_m": 137.66231243770642,
   "min_gradient_pct": 0.7951999781749919
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.913399718661367,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 67.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 135.37097246584028,
   "end_elevation_m": 137.66231243770642,
   "min_gradient_pct": 5.1808364765474835
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.38980092665571,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 63.0,
   "end_distance_m": 83.0,
   "start_elevation_m": 134.48128805862336,
   "end_elevation_m": 138.9592482439545,
   "min_gradient_pct": 5.542643767590079
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.045395678765658,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 60.0,
   "end_distance_m": 85.0,
   "start_elevation_m": 133.86583024527528,
   "end_elevation_m": 139.3771791649667,
   "min_gradient_pct": 5.491718844267552
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.30446017752388,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 40.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 130.10056544833395,
   "end_elevation_m": 140.2527955370959,
   "min_gradient_pct": 6.926041883580751
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.616111804993553,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 5.0,
   "end_distance_m": 105.0,
   "start_elevation_m": 126.41754865277574,
   "end_elevation_m": 142.0336604577693,
   "min_gradient_pct": 7.792484459960264
  }
 ],
 "shape": {
  "ascent_concentration": 0.44,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 78.0,
  "shape_class": "sustained"
 },
 "length_m": 201.88368925532728,
 "start_elevation_m": 126.37778865386699,
 "end_elevation_m": 149.48390281113026,
 "endpoint_gain_m": 23.106114157263278,
 "overall_gradient_pct": 11.445260507420391,
 "accumulated_ascent_m": 23.12768317185254,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.985111211144385,
   "start_distance_m": 72.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 74.5,
   "start_elevation_m": 136.4630568771492,
   "end_elevation_m": 137.66231243770642,
   "start_xy": [
    340724.7448214853,
    4436314.650278371
   ],
   "end_xy": [
    340726.4053324391,
    4436309.934061309
   ]
  },
  "max_10m": {
   "gradient_pct": 22.913399718661367,
   "start_distance_m": 67.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 72.0,
   "start_elevation_m": 135.37097246584028,
   "end_elevation_m": 137.66231243770642,
   "start_xy": [
    340723.0550162395,
    4436319.353906966
   ],
   "end_xy": [
    340726.4053324391,
    4436309.934061309
   ]
  },
  "max_20m": {
   "gradient_pct": 22.38980092665571,
   "start_distance_m": 63.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 134.48128805862336,
   "end_elevation_m": 138.9592482439545,
   "start_xy": [
    340721.232071232,
    4436322.914366417
   ],
   "end_xy": [
    340728.29971082247,
    4436304.24363366
   ]
  },
  "max_25m": {
   "gradient_pct": 22.045395678765658,
   "start_distance_m": 60.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 72.5,
   "start_elevation_m": 133.86583024527528,
   "end_elevation_m": 139.3771791649667,
   "start_xy": [
    340719.86486247636,
    4436325.584711005
   ],
   "end_xy": [
    340728.8374523349,
    4436302.317281131
   ]
  },
  "max_50m": {
   "gradient_pct": 20.30446017752388,
   "start_distance_m": 40.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 130.10056544833395,
   "end_elevation_m": 140.2527955370959,
   "start_xy": [
    340710.7501374387,
    4436343.387008258
   ],
   "end_xy": [
    340730.18180611584,
    4436297.501399808
   ]
  },
  "max_100m": {
   "gradient_pct": 15.616111804993553,
   "start_distance_m": 5.0,
   "end_distance_m": 105.0,
   "midpoint_distance_m": 55.0,
   "start_elevation_m": 126.41754865277574,
   "end_elevation_m": 142.0336604577693,
   "start_xy": [
    340700.7565988057,
    4436376.8504569465
   ],
   "end_xy": [
    340734.2148674588,
    4436283.05375584
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.7951999781749919,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 126.37778865386699,
   "end_elevation_m": 126.41754865277574,
   "start_xy": [
    340699.44,
    4436381.674
   ],
   "end_xy": [
    340700.7565988057,
    4436376.8504569465
   ]
  },
  "min_10m": {
   "gradient_pct": 5.1808364765474835,
   "start_distance_m": 127.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 143.47499129052576,
   "end_elevation_m": 143.9930749381805,
   "start_xy": [
    340738.9494545536,
    4436261.6703620795
   ],
   "end_xy": [
    340742.36602022266,
    4436252.272372428
   ]
  },
  "min_20m": {
   "gradient_pct": 5.542643767590079,
   "start_distance_m": 116.0,
   "end_distance_m": 136.0,
   "midpoint_distance_m": 126.0,
   "start_elevation_m": 142.82689494288996,
   "end_elevation_m": 143.93542369640798,
   "start_xy": [
    340736.2132635916,
    4436272.266302073
   ],
   "end_xy": [
    340742.021529681,
    4436253.211162217
   ]
  },
  "min_25m": {
   "gradient_pct": 5.491718844267552,
   "start_distance_m": 112.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 124.5,
   "start_elevation_m": 142.62014522711362,
   "end_elevation_m": 143.9930749381805,
   "start_xy": [
    340735.7188088198,
    4436276.235623738
   ],
   "end_xy": [
    340742.36602022266,
    4436252.272372428
   ]
  },
  "min_50m": {
   "gradient_pct": 6.926041883580751,
   "start_distance_m": 97.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 141.28674013744245,
   "end_elevation_m": 144.74976107923283,
   "start_xy": [
    340732.0639014092,
    4436290.759165957
   ],
   "end_xy": [
    340745.8109256389,
    4436242.884474545
   ]
  },
  "min_100m": {
   "gradient_pct": 7.792484459960264,
   "start_distance_m": 101.0,
   "end_distance_m": 201.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 141.65322359800157,
   "end_elevation_m": 149.44570805796184,
   "start_xy": [
    340733.13938443403,
    4436286.906460899
   ],
   "end_xy": [
    340765.56158874644,
    4436192.626987858
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.14453785346973,
   "start_distance_m": 72.0,
   "end_distance_m": 74.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 136.4630568771492,
   "end_elevation_m": 136.9659476342186,
   "start_xy": [
    340724.7448214853,
    4436314.650278371
   ],
   "end_xy": [
    340725.40902586683,
    4436312.763791546
   ]
  },
  "max_3m": {
   "gradient_pct": 24.260976520178207,
   "start_distance_m": 72.0,
   "end_distance_m": 75.0,
   "midpoint_distance_m": 73.5,
   "start_elevation_m": 136.4630568771492,
   "end_elevation_m": 137.19088617275455,
   "start_xy": [
    340724.7448214853,
    4436314.650278371
   ],
   "end_xy": [
    340725.7411280576,
    4436311.820548134
   ]
  }
 },
 "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",
   "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_x34y444_PA_Sandy_2014.tif"
  ],
  "calculated_at": "2026-09-07T13:07:09+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-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_Sandy_2014 (collected 2014)",
  "elevation_tile_ids": [
   "x34y444"
  ],
  "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": "Dover",
  "county": "Pennsylvania"
 }
}