{
 "ocl_version": "0.1.0",
 "name": "O Brien Street",
 "slug": "o-brien-street",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.937983189028046,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 252.0,
   "end_distance_m": 254.0,
   "start_elevation_m": 258.0941250850858,
   "end_elevation_m": 258.59288474886637,
   "min_gradient_pct": -0.6474317157994847
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.143714532063616,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 252.0,
   "end_distance_m": 255.0,
   "start_elevation_m": 258.0941250850858,
   "end_elevation_m": 258.8184365210477,
   "min_gradient_pct": -0.5590236613575902
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.574365141400904,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 250.0,
   "end_distance_m": 255.0,
   "start_elevation_m": 257.63971826397767,
   "end_elevation_m": 258.8184365210477,
   "min_gradient_pct": -0.24568711900030848
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.178905650311776,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 250.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 257.63971826397767,
   "end_elevation_m": 259.95760882900885,
   "min_gradient_pct": 1.3811246560783275
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.3791862884201,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 240.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 255.48177157132483,
   "end_elevation_m": 259.95760882900885,
   "min_gradient_pct": 1.817834421746909
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.024053926532588,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 237.0,
   "end_distance_m": 262.0,
   "start_elevation_m": 254.84988760446066,
   "end_elevation_m": 260.3559010860938,
   "min_gradient_pct": 2.203114721639622
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.685040213474053,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 218.0,
   "end_distance_m": 268.0,
   "start_elevation_m": 251.60454541089615,
   "end_elevation_m": 261.4470655176332,
   "min_gradient_pct": 2.7805285097220462
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.475685997689368,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 179.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 247.07761561601615,
   "end_elevation_m": 262.5533016137055,
   "min_gradient_pct": 4.259329061805545
  }
 ],
 "shape": {
  "ascent_concentration": 0.426,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 98.0,
  "shape_class": "sustained"
 },
 "length_m": 314.5864392865121,
 "start_elevation_m": 232.4888572412166,
 "end_elevation_m": 263.91505615674964,
 "endpoint_gain_m": 31.426198915533035,
 "overall_gradient_pct": 9.989686455273866,
 "accumulated_ascent_m": 31.45584369225361,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.574365141400904,
   "start_distance_m": 250.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 252.5,
   "start_elevation_m": 257.63971826397767,
   "end_elevation_m": 258.8184365210477,
   "start_xy": [
    586975.2854430664,
    4482623.533436631
   ],
   "end_xy": [
    586976.5691662708,
    4482628.365833007
   ]
  },
  "max_10m": {
   "gradient_pct": 23.178905650311776,
   "start_distance_m": 250.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 255.0,
   "start_elevation_m": 257.63971826397767,
   "end_elevation_m": 259.95760882900885,
   "start_xy": [
    586975.2854430664,
    4482623.533436631
   ],
   "end_xy": [
    586977.8528894752,
    4482633.198229383
   ]
  },
  "max_20m": {
   "gradient_pct": 22.3791862884201,
   "start_distance_m": 240.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 250.0,
   "start_elevation_m": 255.48177157132483,
   "end_elevation_m": 259.95760882900885,
   "start_xy": [
    586972.7179966576,
    4482613.868643879
   ],
   "end_xy": [
    586977.8528894752,
    4482633.198229383
   ]
  },
  "max_25m": {
   "gradient_pct": 22.024053926532588,
   "start_distance_m": 237.0,
   "end_distance_m": 262.0,
   "midpoint_distance_m": 249.5,
   "start_elevation_m": 254.84988760446066,
   "end_elevation_m": 260.3559010860938,
   "start_xy": [
    586971.947762735,
    4482610.969206053
   ],
   "end_xy": [
    586978.3663787569,
    4482635.1311879335
   ]
  },
  "max_50m": {
   "gradient_pct": 19.685040213474053,
   "start_distance_m": 218.0,
   "end_distance_m": 268.0,
   "midpoint_distance_m": 243.0,
   "start_elevation_m": 251.60454541089615,
   "end_elevation_m": 261.4470655176332,
   "start_xy": [
    586967.1292867857,
    4482592.590488486
   ],
   "end_xy": [
    586979.9068466022,
    4482640.930063584
   ]
  },
  "max_100m": {
   "gradient_pct": 15.475685997689368,
   "start_distance_m": 179.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 229.0,
   "start_elevation_m": 247.07761561601615,
   "end_elevation_m": 262.5533016137055,
   "start_xy": [
    586957.3871277546,
    4482554.826877199
   ],
   "end_xy": [
    586982.7310376518,
    4482651.561335611
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.24568711900030848,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 232.4888572412166,
   "end_elevation_m": 232.4765728852666,
   "start_xy": [
    587015.896,
    4482440.78
   ],
   "end_xy": [
    587011.087315455,
    4482442.149873333
   ]
  },
  "min_10m": {
   "gradient_pct": 1.3811246560783275,
   "start_distance_m": 300.0,
   "end_distance_m": 310.0,
   "midpoint_distance_m": 305.0,
   "start_elevation_m": 263.67691415399224,
   "end_elevation_m": 263.8150266196001,
   "start_xy": [
    586988.2742804821,
    4482671.815873718
   ],
   "end_xy": [
    586990.9903096926,
    4482681.439967718
   ]
  },
  "min_20m": {
   "gradient_pct": 1.817834421746909,
   "start_distance_m": 293.0,
   "end_distance_m": 313.0,
   "midpoint_distance_m": 303.0,
   "start_elevation_m": 263.50716296515316,
   "end_elevation_m": 263.87072984950254,
   "start_xy": [
    586986.3730600347,
    4482665.079007918
   ],
   "end_xy": [
    586991.8051184558,
    4482684.327195918
   ]
  },
  "min_25m": {
   "gradient_pct": 2.203114721639622,
   "start_distance_m": 122.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 134.5,
   "start_elevation_m": 245.11874864495195,
   "end_elevation_m": 245.66952732536186,
   "start_xy": [
    586943.168569716,
    4482499.628778092
   ],
   "end_xy": [
    586949.3935613702,
    4482523.84134999
   ]
  },
  "min_50m": {
   "gradient_pct": 2.7805285097220462,
   "start_distance_m": 116.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 141.0,
   "start_elevation_m": 244.93733943164858,
   "end_elevation_m": 246.3276036865096,
   "start_xy": [
    586941.6840482476,
    4482493.815328512
   ],
   "end_xy": [
    586954.139741411,
    4482542.239006771
   ]
  },
  "min_100m": {
   "gradient_pct": 4.259329061805545,
   "start_distance_m": 85.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 135.0,
   "start_elevation_m": 243.37401071454264,
   "end_elevation_m": 247.63333977634818,
   "start_xy": [
    586934.0775493849,
    4482463.8159759985
   ],
   "end_xy": [
    586958.8859214517,
    4482560.636663551
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.937983189028046,
   "start_distance_m": 252.0,
   "end_distance_m": 254.0,
   "midpoint_distance_m": 253.0,
   "start_elevation_m": 258.0941250850858,
   "end_elevation_m": 258.59288474886637,
   "start_xy": [
    586975.7989323481,
    4482625.466395182
   ],
   "end_xy": [
    586976.3124216299,
    4482627.399353731
   ]
  },
  "max_3m": {
   "gradient_pct": 24.143714532063616,
   "start_distance_m": 252.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 253.5,
   "start_elevation_m": 258.0941250850858,
   "end_elevation_m": 258.8184365210477,
   "start_xy": [
    586975.7989323481,
    4482625.466395182
   ],
   "end_xy": [
    586976.5691662708,
    4482628.365833007
   ]
  }
 },
 "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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x58y449_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T11:57:58+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": [
   "x58y449"
  ],
  "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": "Millvale",
  "county": "Pennsylvania"
 }
}