{
 "ocl_version": "0.1.0",
 "name": "Clopper Street",
 "slug": "clopper-street",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.71309003826616,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 215.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 305.009150012424,
   "end_elevation_m": 305.46341181318934,
   "min_gradient_pct": -6.5982522516719655
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.274110176389666,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 219.0,
   "end_distance_m": 222.0,
   "start_elevation_m": 305.86243520259194,
   "end_elevation_m": 306.53065850788363,
   "min_gradient_pct": -6.160838882758905
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.62842830616455,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 219.0,
   "end_distance_m": 224.0,
   "start_elevation_m": 305.86243520259194,
   "end_elevation_m": 306.94385661790017,
   "min_gradient_pct": -5.866405648379214
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.528441635879858,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 215.0,
   "end_distance_m": 225.0,
   "start_elevation_m": 305.009150012424,
   "end_elevation_m": 307.161994176012,
   "min_gradient_pct": -5.3959416396344295
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.06634465492391,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 206.0,
   "end_distance_m": 226.0,
   "start_elevation_m": 303.1543057746344,
   "end_elevation_m": 307.3675747056192,
   "min_gradient_pct": -5.304052070362957
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.593027636081843,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 202.0,
   "end_distance_m": 227.0,
   "start_elevation_m": 302.4087969136914,
   "end_elevation_m": 307.55705382271185,
   "min_gradient_pct": -5.117552872625765
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.59170767212197,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 195.0,
   "end_distance_m": 245.0,
   "start_elevation_m": 301.2541094385656,
   "end_elevation_m": 310.5499632746266,
   "min_gradient_pct": -4.327869907458307
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.424082048189177,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 150.0,
   "end_distance_m": 250.0,
   "start_elevation_m": 294.8622130114179,
   "end_elevation_m": 311.2862950596071,
   "min_gradient_pct": 2.472852897615894
  }
 ],
 "shape": {
  "ascent_concentration": 0.456,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 208.0,
  "shape_class": "stepped"
 },
 "length_m": 350.8475288388056,
 "start_elevation_m": 283.9264592199706,
 "end_elevation_m": 313.7312705266173,
 "endpoint_gain_m": 29.80481130664674,
 "overall_gradient_pct": 8.495089421120122,
 "accumulated_ascent_m": 32.27091109969507,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.62842830616455,
   "start_distance_m": 219.0,
   "end_distance_m": 224.0,
   "midpoint_distance_m": 221.5,
   "start_elevation_m": 305.86243520259194,
   "end_elevation_m": 306.94385661790017,
   "start_xy": [
    610784.0595029177,
    4458105.134550028
   ],
   "end_xy": [
    610782.8466490202,
    4458109.985218582
   ]
  },
  "max_10m": {
   "gradient_pct": 21.528441635879858,
   "start_distance_m": 215.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 220.0,
   "start_elevation_m": 305.009150012424,
   "end_elevation_m": 307.161994176012,
   "start_xy": [
    610785.0297860357,
    4458101.254015184
   ],
   "end_xy": [
    610782.6040782407,
    4458110.955352292
   ]
  },
  "max_20m": {
   "gradient_pct": 21.06634465492391,
   "start_distance_m": 206.0,
   "end_distance_m": 226.0,
   "midpoint_distance_m": 216.0,
   "start_elevation_m": 303.1543057746344,
   "end_elevation_m": 307.3675747056192,
   "start_xy": [
    610787.2129230511,
    4458092.522811786
   ],
   "end_xy": [
    610782.3615074612,
    4458111.925486003
   ]
  },
  "max_25m": {
   "gradient_pct": 20.593027636081843,
   "start_distance_m": 202.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 214.5,
   "start_elevation_m": 302.4087969136914,
   "end_elevation_m": 307.55705382271185,
   "start_xy": [
    610788.183206169,
    4458088.642276943
   ],
   "end_xy": [
    610782.1189366817,
    4458112.895619714
   ]
  },
  "max_50m": {
   "gradient_pct": 18.59170767212197,
   "start_distance_m": 195.0,
   "end_distance_m": 245.0,
   "midpoint_distance_m": 220.0,
   "start_elevation_m": 301.2541094385656,
   "end_elevation_m": 310.5499632746266,
   "start_xy": [
    610789.8812016256,
    4458081.851340967
   ],
   "end_xy": [
    610777.6706337954,
    4458130.337278811
   ]
  },
  "max_100m": {
   "gradient_pct": 16.424082048189177,
   "start_distance_m": 150.0,
   "end_distance_m": 250.0,
   "midpoint_distance_m": 200.0,
   "start_elevation_m": 294.8622130114179,
   "end_elevation_m": 311.2862950596071,
   "start_xy": [
    610800.7591654585,
    4458038.185932747
   ],
   "end_xy": [
    610776.4313995963,
    4458135.1812749505
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.866405648379214,
   "start_distance_m": 325.0,
   "end_distance_m": 330.0,
   "midpoint_distance_m": 327.5,
   "start_elevation_m": 314.96952228287535,
   "end_elevation_m": 314.6762020004564,
   "start_xy": [
    610733.0069956891,
    4458186.956477791
   ],
   "end_xy": [
    610728.2472455702,
    4458188.482318487
   ]
  },
  "min_10m": {
   "gradient_pct": -5.3959416396344295,
   "start_distance_m": 321.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 326.0,
   "start_elevation_m": 315.17130249222225,
   "end_elevation_m": 314.6317083282588,
   "start_xy": [
    610736.7606759202,
    4458185.574492002
   ],
   "end_xy": [
    610727.2903338075,
    4458188.77269734
   ]
  },
  "min_20m": {
   "gradient_pct": -5.304052070362957,
   "start_distance_m": 322.0,
   "end_distance_m": 342.0,
   "midpoint_distance_m": 332.0,
   "start_elevation_m": 315.1257096791076,
   "end_elevation_m": 314.064899265035,
   "start_xy": [
    610735.8222558624,
    4458185.919988449
   ],
   "end_xy": [
    610716.7643044171,
    4458191.966864724
   ]
  },
  "min_25m": {
   "gradient_pct": -5.117552872625765,
   "start_distance_m": 317.0,
   "end_distance_m": 342.0,
   "midpoint_distance_m": 329.5,
   "start_elevation_m": 315.34428748319147,
   "end_elevation_m": 314.064899265035,
   "start_xy": [
    610740.5143561512,
    4458184.192506212
   ],
   "end_xy": [
    610716.7643044171,
    4458191.966864724
   ]
  },
  "min_50m": {
   "gradient_pct": -4.327869907458307,
   "start_distance_m": 299.0,
   "end_distance_m": 349.0,
   "midpoint_distance_m": 324.0,
   "start_elevation_m": 315.95791227480515,
   "end_elevation_m": 313.793977321076,
   "start_xy": [
    610757.405917191,
    4458177.973570158
   ],
   "end_xy": [
    610710.0659220779,
    4458193.999516695
   ]
  },
  "min_100m": {
   "gradient_pct": 2.472852897615894,
   "start_distance_m": 250.0,
   "end_distance_m": 350.0,
   "midpoint_distance_m": 300.0,
   "start_elevation_m": 311.2862950596071,
   "end_elevation_m": 313.759147957223,
   "start_xy": [
    610776.4313995963,
    4458135.1812749505
   ],
   "end_xy": [
    610709.109010315,
    4458194.2898955485
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.71309003826616,
   "start_distance_m": 215.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 216.0,
   "start_elevation_m": 305.009150012424,
   "end_elevation_m": 305.46341181318934,
   "start_xy": [
    610785.0297860357,
    4458101.254015184
   ],
   "end_xy": [
    610784.5446444766,
    4458103.194282605
   ]
  },
  "max_3m": {
   "gradient_pct": 22.274110176389666,
   "start_distance_m": 219.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 220.5,
   "start_elevation_m": 305.86243520259194,
   "end_elevation_m": 306.53065850788363,
   "start_xy": [
    610784.0595029177,
    4458105.134550028
   ],
   "end_xy": [
    610783.3317905791,
    4458108.0449511595
   ]
  }
 },
 "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": [
   "descends_at_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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x61y446_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T11:33:28+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-band1.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_WesternPA_2019_D20 (collected 2020)",
  "elevation_tile_ids": [
   "x61y446"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Sewickley",
  "county": "Pennsylvania"
 }
}