{
 "ocl_version": "0.1.0",
 "name": "Green Street",
 "slug": "green-street-4",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.538224639327154,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 211.0,
   "end_distance_m": 213.0,
   "start_elevation_m": 133.36469800119966,
   "end_elevation_m": 133.8354624939862,
   "min_gradient_pct": -1.4531582937813425
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.293240353427752,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 214.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 134.02372108476962,
   "end_elevation_m": 134.69251829537245,
   "min_gradient_pct": -0.01762228531940006
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.154800176145955,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 211.0,
   "end_distance_m": 216.0,
   "start_elevation_m": 133.36469800119966,
   "end_elevation_m": 134.47243801000695,
   "min_gradient_pct": 1.6357466709746404
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.238041787316888,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 208.0,
   "end_distance_m": 218.0,
   "start_elevation_m": 132.76968541473926,
   "end_elevation_m": 134.89348959347095,
   "min_gradient_pct": 3.5376582341685037
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.57590493728668,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 201.0,
   "end_distance_m": 221.0,
   "start_elevation_m": 131.3716899507432,
   "end_elevation_m": 135.48687093820052,
   "min_gradient_pct": 5.0552006926290005
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.038072933479043,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 196.0,
   "end_distance_m": 221.0,
   "start_elevation_m": 130.47735270483076,
   "end_elevation_m": 135.48687093820052,
   "min_gradient_pct": 5.781529399031456
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.786229915946336,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 175.0,
   "end_distance_m": 225.0,
   "start_elevation_m": 126.76846631493738,
   "end_elevation_m": 136.16158127291055,
   "min_gradient_pct": 7.701984062769782
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.725415905804113,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 146.0,
   "end_distance_m": 246.0,
   "start_elevation_m": 122.4820940759852,
   "end_elevation_m": 139.20750998178931,
   "min_gradient_pct": 8.37412289423483
  }
 ],
 "shape": {
  "ascent_concentration": 0.368,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 158.0,
  "shape_class": "sustained"
 },
 "length_m": 267.525852304739,
 "start_elevation_m": 108.60604150477482,
 "end_elevation_m": 141.41267386316974,
 "endpoint_gain_m": 32.80663235839492,
 "overall_gradient_pct": 12.2629764846146,
 "accumulated_ascent_m": 32.8387596596729,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.154800176145955,
   "start_distance_m": 211.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 213.5,
   "start_elevation_m": 133.36469800119966,
   "end_elevation_m": 134.47243801000695,
   "start_xy": [
    427531.3895620462,
    4424865.778591325
   ],
   "end_xy": [
    427533.34512748645,
    4424861.176878186
   ]
  },
  "max_10m": {
   "gradient_pct": 21.238041787316888,
   "start_distance_m": 208.0,
   "end_distance_m": 218.0,
   "midpoint_distance_m": 213.0,
   "start_elevation_m": 132.76968541473926,
   "end_elevation_m": 134.89348959347095,
   "start_xy": [
    427530.2162227821,
    4424868.539619207
   ],
   "end_xy": [
    427534.12735366257,
    4424859.336192931
   ]
  },
  "max_20m": {
   "gradient_pct": 20.57590493728668,
   "start_distance_m": 201.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 211.0,
   "start_elevation_m": 131.3716899507432,
   "end_elevation_m": 135.48687093820052,
   "start_xy": [
    427527.47843116574,
    4424874.982017602
   ],
   "end_xy": [
    427535.3006929267,
    4424856.575165047
   ]
  },
  "max_25m": {
   "gradient_pct": 20.038072933479043,
   "start_distance_m": 196.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 208.5,
   "start_elevation_m": 130.47735270483076,
   "end_elevation_m": 135.48687093820052,
   "start_xy": [
    427525.5228657255,
    4424879.5837307405
   ],
   "end_xy": [
    427535.3006929267,
    4424856.575165047
   ]
  },
  "max_50m": {
   "gradient_pct": 18.786229915946336,
   "start_distance_m": 175.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 200.0,
   "start_elevation_m": 126.76846631493738,
   "end_elevation_m": 136.16158127291055,
   "start_xy": [
    427517.30949087656,
    4424898.910925922
   ],
   "end_xy": [
    427536.86514527886,
    4424852.893794537
   ]
  },
  "max_100m": {
   "gradient_pct": 16.725415905804113,
   "start_distance_m": 146.0,
   "end_distance_m": 246.0,
   "midpoint_distance_m": 196.0,
   "start_elevation_m": 122.4820940759852,
   "end_elevation_m": 139.20750998178931,
   "start_xy": [
    427505.9672113232,
    4424925.600862125
   ],
   "end_xy": [
    427536.1935279599,
    4424832.466850845
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.6357466709746404,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 108.60604150477482,
   "end_elevation_m": 108.68782883832355,
   "start_xy": [
    427448.283,
    4425059.722
   ],
   "end_xy": [
    427450.2610813064,
    4425055.129920477
   ]
  },
  "min_10m": {
   "gradient_pct": 3.5376582341685037,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 108.60604150477482,
   "end_elevation_m": 108.95980732819167,
   "start_xy": [
    427448.283,
    4425059.722
   ],
   "end_xy": [
    427452.2391626127,
    4425050.537840954
   ]
  },
  "min_20m": {
   "gradient_pct": 5.0552006926290005,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 108.60604150477482,
   "end_elevation_m": 109.61708164330062,
   "start_xy": [
    427448.283,
    4425059.722
   ],
   "end_xy": [
    427456.1953252254,
    4425041.353681908
   ]
  },
  "min_25m": {
   "gradient_pct": 5.781529399031456,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 108.60604150477482,
   "end_elevation_m": 110.05142385453269,
   "start_xy": [
    427448.283,
    4425059.722
   ],
   "end_xy": [
    427458.1734065318,
    4425036.761602385
   ]
  },
  "min_50m": {
   "gradient_pct": 7.701984062769782,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 108.60604150477482,
   "end_elevation_m": 112.45703353615971,
   "start_xy": [
    427448.283,
    4425059.722
   ],
   "end_xy": [
    427468.0638130636,
    4425013.80120477
   ]
  },
  "min_100m": {
   "gradient_pct": 8.37412289423483,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 108.60604150477482,
   "end_elevation_m": 116.98016439900965,
   "start_xy": [
    427448.283,
    4425059.722
   ],
   "end_xy": [
    427487.84462612716,
    4424967.880409541
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.538224639327154,
   "start_distance_m": 211.0,
   "end_distance_m": 213.0,
   "midpoint_distance_m": 212.0,
   "start_elevation_m": 133.36469800119966,
   "end_elevation_m": 133.8354624939862,
   "start_xy": [
    427531.3895620462,
    4424865.778591325
   ],
   "end_xy": [
    427532.17178822233,
    4424863.937906069
   ]
  },
  "max_3m": {
   "gradient_pct": 22.293240353427752,
   "start_distance_m": 214.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 215.5,
   "start_elevation_m": 134.02372108476962,
   "end_elevation_m": 134.69251829537245,
   "start_xy": [
    427532.5629013104,
    4424863.017563442
   ],
   "end_xy": [
    427533.7362405745,
    4424860.256535558
   ]
  }
 },
 "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_x42y443_MD_PA_SandySupp_2014.tif"
  ],
  "calculated_at": "2026-09-07T15:46:34+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-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, MD_PA_SandySupp_2014 (collected 2014)",
  "elevation_tile_ids": [
   "x42y443"
  ],
  "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": "Valley",
  "county": "Pennsylvania"
 }
}