{
 "ocl_version": "0.1.0",
 "name": "Harrison Avenue",
 "slug": "harrison-avenue",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.2131560748021,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 278.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 280.15166835321264,
   "end_elevation_m": 280.6359314747087,
   "min_gradient_pct": -1.8163073596042523
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.950525514914034,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 277.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 279.91741570926126,
   "end_elevation_m": 280.6359314747087,
   "min_gradient_pct": -1.722631119222721
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.26236075992142,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 276.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 279.69855180793655,
   "end_elevation_m": 280.8616698459326,
   "min_gradient_pct": -1.6809231208395659
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.71455908246196,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 271.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 278.5902139376864,
   "end_elevation_m": 280.8616698459326,
   "min_gradient_pct": 0.5055098164368133
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.331683911783102,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 261.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 276.395333063576,
   "end_elevation_m": 280.8616698459326,
   "min_gradient_pct": 4.731449710967723
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.329346465984145,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 257.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 275.4942736290696,
   "end_elevation_m": 281.07661024556563,
   "min_gradient_pct": 4.999841451561565
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.246180575411927,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 239.0,
   "end_distance_m": 289.0,
   "start_elevation_m": 271.8306548831919,
   "end_elevation_m": 282.4537451708979,
   "min_gradient_pct": 5.401010184905658
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.908423576203404,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 202.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 265.2142693089248,
   "end_elevation_m": 284.12269288512823,
   "min_gradient_pct": 5.9028736597883835
  }
 ],
 "shape": {
  "ascent_concentration": 0.455,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 104.0,
  "shape_class": "stepped"
 },
 "length_m": 307.9222959586756,
 "start_elevation_m": 249.7649295151224,
 "end_elevation_m": 284.1147456640732,
 "endpoint_gain_m": 34.34981614895082,
 "overall_gradient_pct": 11.155352048154612,
 "accumulated_ascent_m": 34.473607750332775,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.26236075992142,
   "start_distance_m": 276.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 278.5,
   "start_elevation_m": 279.69855180793655,
   "end_elevation_m": 280.8616698459326,
   "start_xy": [
    578680.5537734765,
    4483931.5597294625
   ],
   "end_xy": [
    578683.8404345566,
    4483935.318129099
   ]
  },
  "max_10m": {
   "gradient_pct": 22.71455908246196,
   "start_distance_m": 271.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 276.0,
   "start_elevation_m": 278.5902139376864,
   "end_elevation_m": 280.8616698459326,
   "start_xy": [
    578677.293498321,
    4483927.768871261
   ],
   "end_xy": [
    578683.8404345566,
    4483935.318129099
   ]
  },
  "max_20m": {
   "gradient_pct": 22.331683911783102,
   "start_distance_m": 261.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 271.0,
   "start_elevation_m": 276.395333063576,
   "end_elevation_m": 280.8616698459326,
   "start_xy": [
    578670.7729480098,
    4483920.187154856
   ],
   "end_xy": [
    578683.8404345566,
    4483935.318129099
   ]
  },
  "max_25m": {
   "gradient_pct": 22.329346465984145,
   "start_distance_m": 257.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 269.5,
   "start_elevation_m": 275.4942736290696,
   "end_elevation_m": 281.07661024556563,
   "start_xy": [
    578668.1647278853,
    4483917.154468294
   ],
   "end_xy": [
    578684.7157910845,
    4483935.8016070705
   ]
  },
  "max_50m": {
   "gradient_pct": 21.246180575411927,
   "start_distance_m": 239.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 264.0,
   "start_elevation_m": 271.8306548831919,
   "end_elevation_m": 282.4537451708979,
   "start_xy": [
    578656.4277373253,
    4483903.507378765
   ],
   "end_xy": [
    578690.8432867791,
    4483939.185952873
   ]
  },
  "max_100m": {
   "gradient_pct": 18.908423576203404,
   "start_distance_m": 202.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 252.0,
   "start_elevation_m": 265.2142693089248,
   "end_elevation_m": 284.12269288512823,
   "start_xy": [
    578632.3000945703,
    4483875.456411096
   ],
   "end_xy": [
    578692.4981428317,
    4483951.650222138
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.6809231208395659,
   "start_distance_m": 1.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 3.5,
   "start_elevation_m": 249.75760203373142,
   "end_elevation_m": 249.67355587768944,
   "start_xy": [
    578503.0247983739,
    4483721.546507996
   ],
   "end_xy": [
    578506.253790244,
    4483725.364047976
   ]
  },
  "min_10m": {
   "gradient_pct": 0.5055098164368133,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 249.7649295151224,
   "end_elevation_m": 249.81548049676607,
   "start_xy": [
    578502.379,
    4483720.783
   ],
   "end_xy": [
    578508.8371096273,
    4483728.417973474
   ]
  },
  "min_20m": {
   "gradient_pct": 4.731449710967723,
   "start_distance_m": 87.0,
   "end_distance_m": 107.0,
   "midpoint_distance_m": 97.0,
   "start_elevation_m": 254.99014060922727,
   "end_elevation_m": 255.9364305514208,
   "start_xy": [
    578558.5679712548,
    4483787.2043783795
   ],
   "end_xy": [
    578571.4516198793,
    4483802.501674408
   ]
  },
  "min_25m": {
   "gradient_pct": 4.999841451561565,
   "start_distance_m": 82.0,
   "end_distance_m": 107.0,
   "midpoint_distance_m": 94.5,
   "start_elevation_m": 254.68647018853042,
   "end_elevation_m": 255.9364305514208,
   "start_xy": [
    578555.3386945258,
    4483783.38707936
   ],
   "end_xy": [
    578571.4516198793,
    4483802.501674408
   ]
  },
  "min_50m": {
   "gradient_pct": 5.401010184905658,
   "start_distance_m": 57.0,
   "end_distance_m": 107.0,
   "midpoint_distance_m": 82.0,
   "start_elevation_m": 253.23592545896798,
   "end_elevation_m": 255.9364305514208,
   "start_xy": [
    578539.1923108805,
    4483764.30058426
   ],
   "end_xy": [
    578571.4516198793,
    4483802.501674408
   ]
  },
  "min_100m": {
   "gradient_pct": 5.9028736597883835,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 249.7649295151224,
   "end_elevation_m": 255.66780317491077,
   "start_xy": [
    578502.379,
    4483720.783
   ],
   "end_xy": [
    578566.9642878715,
    4483797.129189064
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.2131560748021,
   "start_distance_m": 278.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 280.15166835321264,
   "end_elevation_m": 280.6359314747087,
   "start_xy": [
    578681.8578835387,
    4483933.076072744
   ],
   "end_xy": [
    578683.161993601,
    4483934.592416025
   ]
  },
  "max_3m": {
   "gradient_pct": 23.950525514914034,
   "start_distance_m": 277.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 278.5,
   "start_elevation_m": 279.91741570926126,
   "end_elevation_m": 280.6359314747087,
   "start_xy": [
    578681.2058285077,
    4483932.317901103
   ],
   "end_xy": [
    578683.161993601,
    4483934.592416025
   ]
  }
 },
 "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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x57y449_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T12:33:02+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": [
   "x57y449"
  ],
  "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": "Avalon",
  "county": "Pennsylvania"
 }
}