{
 "ocl_version": "0.1.0",
 "name": "Brummer Lane",
 "slug": "brummer-lane",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.74956584066308,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 943.0,
   "end_distance_m": 945.0,
   "start_elevation_m": 252.28777742752976,
   "end_elevation_m": 252.82276874434302,
   "min_gradient_pct": -10.392683380388235
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.84517352874415,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 943.0,
   "end_distance_m": 946.0,
   "start_elevation_m": 252.28777742752976,
   "end_elevation_m": 253.03313263339209,
   "min_gradient_pct": -10.202507550361398
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.229955779625584,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 943.0,
   "end_distance_m": 948.0,
   "start_elevation_m": 252.28777742752976,
   "end_elevation_m": 253.44927521651104,
   "min_gradient_pct": -9.914406979216324
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.596207403514654,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 943.0,
   "end_distance_m": 953.0,
   "start_elevation_m": 252.28777742752976,
   "end_elevation_m": 254.54739816788123,
   "min_gradient_pct": -9.39805388166775
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.512136283130445,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 934.0,
   "end_distance_m": 954.0,
   "start_elevation_m": 250.49343115817948,
   "end_elevation_m": 254.79585841480556,
   "min_gradient_pct": -8.748528234933985
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.78344299639491,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 929.0,
   "end_distance_m": 954.0,
   "start_elevation_m": 249.59999766570684,
   "end_elevation_m": 254.79585841480556,
   "min_gradient_pct": -8.512996117665807
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.51685046152562,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 936.0,
   "end_distance_m": 986.0,
   "start_elevation_m": 250.8882326306331,
   "end_elevation_m": 260.6466578613959,
   "min_gradient_pct": -6.928603976417662
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.969927024049866,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 929.0,
   "end_distance_m": 1029.0,
   "start_elevation_m": 249.59999766570684,
   "end_elevation_m": 267.5699246897567,
   "min_gradient_pct": -3.5462818946795096
  }
 ],
 "shape": {
  "ascent_concentration": 0.441,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 167.0,
  "shape_class": "sustained"
 },
 "length_m": 1159.2493287057512,
 "start_elevation_m": 190.97161521239957,
 "end_elevation_m": 276.10902260316556,
 "endpoint_gain_m": 85.13740739076599,
 "overall_gradient_pct": 7.344184316743837,
 "accumulated_ascent_m": 89.42436740633582,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.229955779625584,
   "start_distance_m": 943.0,
   "end_distance_m": 948.0,
   "midpoint_distance_m": 945.5,
   "start_elevation_m": 252.28777742752976,
   "end_elevation_m": 253.44927521651104,
   "start_xy": [
    363414.7656995165,
    4432206.508912754
   ],
   "end_xy": [
    363419.7564665694,
    4432206.205195412
   ]
  },
  "max_10m": {
   "gradient_pct": 22.596207403514654,
   "start_distance_m": 943.0,
   "end_distance_m": 953.0,
   "midpoint_distance_m": 948.0,
   "start_elevation_m": 252.28777742752976,
   "end_elevation_m": 254.54739816788123,
   "start_xy": [
    363414.7656995165,
    4432206.508912754
   ],
   "end_xy": [
    363424.74723362224,
    4432205.90147807
   ]
  },
  "max_20m": {
   "gradient_pct": 21.512136283130445,
   "start_distance_m": 934.0,
   "end_distance_m": 954.0,
   "midpoint_distance_m": 944.0,
   "start_elevation_m": 250.49343115817948,
   "end_elevation_m": 254.79585841480556,
   "start_xy": [
    363405.78231882135,
    4432207.05560397
   ],
   "end_xy": [
    363425.6932672015,
    4432205.749100186
   ]
  },
  "max_25m": {
   "gradient_pct": 20.78344299639491,
   "start_distance_m": 929.0,
   "end_distance_m": 954.0,
   "midpoint_distance_m": 941.5,
   "start_elevation_m": 249.59999766570684,
   "end_elevation_m": 254.79585841480556,
   "start_xy": [
    363400.79155176843,
    4432207.359321312
   ],
   "end_xy": [
    363425.6932672015,
    4432205.749100186
   ]
  },
  "max_50m": {
   "gradient_pct": 19.51685046152562,
   "start_distance_m": 936.0,
   "end_distance_m": 986.0,
   "midpoint_distance_m": 961.0,
   "start_elevation_m": 250.8882326306331,
   "end_elevation_m": 260.6466578613959,
   "start_xy": [
    363407.7786256425,
    4432206.934117033
   ],
   "end_xy": [
    363443.6899919706,
    4432179.289359114
   ]
  },
  "max_100m": {
   "gradient_pct": 17.969927024049866,
   "start_distance_m": 929.0,
   "end_distance_m": 1029.0,
   "midpoint_distance_m": 979.0,
   "start_elevation_m": 249.59999766570684,
   "end_elevation_m": 267.5699246897567,
   "start_xy": [
    363400.79155176843,
    4432207.359321312
   ],
   "end_xy": [
    363467.8730908791,
    4432143.734082049
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.914406979216324,
   "start_distance_m": 432.0,
   "end_distance_m": 437.0,
   "midpoint_distance_m": 434.5,
   "start_elevation_m": 208.5240223161447,
   "end_elevation_m": 208.0283019671839,
   "start_xy": [
    362930.6312869748,
    4432189.340059899
   ],
   "end_xy": [
    362934.04827568494,
    4432185.689828652
   ]
  },
  "min_10m": {
   "gradient_pct": -9.39805388166775,
   "start_distance_m": 428.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 433.0,
   "start_elevation_m": 208.87497167276487,
   "end_elevation_m": 207.9351662845981,
   "start_xy": [
    362927.8976960067,
    4432192.260244896
   ],
   "end_xy": [
    362934.731673427,
    4432184.959782402
   ]
  },
  "min_20m": {
   "gradient_pct": -8.748528234933985,
   "start_distance_m": 424.0,
   "end_distance_m": 444.0,
   "midpoint_distance_m": 434.0,
   "start_elevation_m": 209.21642332534614,
   "end_elevation_m": 207.46671767835934,
   "start_xy": [
    362925.1641050386,
    4432195.180429894
   ],
   "end_xy": [
    362939.6566466136,
    4432181.552497473
   ]
  },
  "min_25m": {
   "gradient_pct": -8.512996117665807,
   "start_distance_m": 421.0,
   "end_distance_m": 446.0,
   "midpoint_distance_m": 433.5,
   "start_elevation_m": 209.44233360097982,
   "end_elevation_m": 207.31408457156337,
   "start_xy": [
    362923.11391181254,
    4432197.370568641
   ],
   "end_xy": [
    362941.3211239783,
    4432180.4436624525
   ]
  },
  "min_50m": {
   "gradient_pct": -6.928603976417662,
   "start_distance_m": 412.0,
   "end_distance_m": 462.0,
   "midpoint_distance_m": 437.0,
   "start_elevation_m": 209.95117280395334,
   "end_elevation_m": 206.4868708157445,
   "start_xy": [
    362916.9633321343,
    4432203.940984885
   ],
   "end_xy": [
    362954.6369428955,
    4432171.572982289
   ]
  },
  "min_100m": {
   "gradient_pct": -3.5462818946795096,
   "start_distance_m": 395.0,
   "end_distance_m": 495.0,
   "midpoint_distance_m": 445.0,
   "start_elevation_m": 210.0747560292806,
   "end_elevation_m": 206.52847413460108,
   "start_xy": [
    362905.3455705198,
    4432216.351771125
   ],
   "end_xy": [
    362982.19528890925,
    4432153.454667566
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.74956584066308,
   "start_distance_m": 943.0,
   "end_distance_m": 945.0,
   "midpoint_distance_m": 944.0,
   "start_elevation_m": 252.28777742752976,
   "end_elevation_m": 252.82276874434302,
   "start_xy": [
    363414.7656995165,
    4432206.508912754
   ],
   "end_xy": [
    363416.76200633764,
    4432206.387425818
   ]
  },
  "max_3m": {
   "gradient_pct": 24.84517352874415,
   "start_distance_m": 943.0,
   "end_distance_m": 946.0,
   "midpoint_distance_m": 944.5,
   "start_elevation_m": 252.28777742752976,
   "end_elevation_m": 253.03313263339209,
   "start_xy": [
    363414.7656995165,
    4432206.508912754
   ],
   "end_xy": [
    363417.76015974826,
    4432206.326682349
   ]
  }
 },
 "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": []
 },
 "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_x36y444_PA_Sandy_2014.tif"
  ],
  "calculated_at": "2026-09-07T12:51:03+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": [
   "x36y444"
  ],
  "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": "Hellam",
  "county": "Pennsylvania"
 }
}