{
 "ocl_version": "0.1.0",
 "name": "Albert Street",
 "slug": "albert-street-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.64900364033997,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 107.0,
   "end_distance_m": 109.0,
   "start_elevation_m": 327.3737694117824,
   "end_elevation_m": 327.8067494845892,
   "min_gradient_pct": -6.430759044047818
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.544489164193692,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 107.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 327.3737694117824,
   "end_elevation_m": 328.0201040867082,
   "min_gradient_pct": -6.299672073932546
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.18414880360433,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 105.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 326.960896646528,
   "end_elevation_m": 328.0201040867082,
   "min_gradient_pct": -6.18738431118345
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.62727674700568,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 101.0,
   "end_distance_m": 111.0,
   "start_elevation_m": 326.1618910119446,
   "end_elevation_m": 328.22461868664516,
   "min_gradient_pct": -5.93079748226728
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.2842358985302,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 65.0,
   "end_distance_m": 85.0,
   "start_elevation_m": 318.99489315664795,
   "end_elevation_m": 323.051740336354,
   "min_gradient_pct": -5.588489040386548
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.12133201939946,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 61.0,
   "end_distance_m": 86.0,
   "start_elevation_m": 318.21400367608084,
   "end_elevation_m": 323.2443366809307,
   "min_gradient_pct": -5.401414397904091
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.021454928697494,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 62.0,
   "end_distance_m": 112.0,
   "start_elevation_m": 318.4039476282515,
   "end_elevation_m": 328.41467509260025,
   "min_gradient_pct": -4.805726056633944
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.416298834576082,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 34.0,
   "end_distance_m": 134.0,
   "start_elevation_m": 313.1242418423984,
   "end_elevation_m": 331.5405406769745,
   "min_gradient_pct": -1.2577207385724591
  }
 ],
 "shape": {
  "ascent_concentration": 0.481,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 178.0,
  "shape_class": "stepped"
 },
 "length_m": 362.97241537289574,
 "start_elevation_m": 310.6303373690812,
 "end_elevation_m": 343.7754075018858,
 "endpoint_gain_m": 33.14507013280462,
 "overall_gradient_pct": 9.13156722908362,
 "accumulated_ascent_m": 35.78301489706297,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.18414880360433,
   "start_distance_m": 105.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 107.5,
   "start_elevation_m": 326.960896646528,
   "end_elevation_m": 328.0201040867082,
   "start_xy": [
    584194.0707599884,
    4475148.983547611
   ],
   "end_xy": [
    584189.1140342735,
    4475149.63995464
   ]
  },
  "max_10m": {
   "gradient_pct": 20.62727674700568,
   "start_distance_m": 101.0,
   "end_distance_m": 111.0,
   "midpoint_distance_m": 106.0,
   "start_elevation_m": 326.1618910119446,
   "end_elevation_m": 328.22461868664516,
   "start_xy": [
    584198.0361405602,
    4475148.4584219875
   ],
   "end_xy": [
    584188.1226891306,
    4475149.771236046
   ]
  },
  "max_20m": {
   "gradient_pct": 20.2842358985302,
   "start_distance_m": 65.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 75.0,
   "start_elevation_m": 318.99489315664795,
   "end_elevation_m": 323.051740336354,
   "start_xy": [
    584233.724565707,
    4475143.732291378
   ],
   "end_xy": [
    584213.8976628478,
    4475146.357919495
   ]
  },
  "max_25m": {
   "gradient_pct": 20.12133201939946,
   "start_distance_m": 61.0,
   "end_distance_m": 86.0,
   "midpoint_distance_m": 73.5,
   "start_elevation_m": 318.21400367608084,
   "end_elevation_m": 323.2443366809307,
   "start_xy": [
    584237.6899462789,
    4475143.207165755
   ],
   "end_xy": [
    584212.9063177047,
    4475146.4892009
   ]
  },
  "max_50m": {
   "gradient_pct": 20.021454928697494,
   "start_distance_m": 62.0,
   "end_distance_m": 112.0,
   "midpoint_distance_m": 87.0,
   "start_elevation_m": 318.4039476282515,
   "end_elevation_m": 328.41467509260025,
   "start_xy": [
    584236.698601136,
    4475143.338447161
   ],
   "end_xy": [
    584187.1313439875,
    4475149.902517452
   ]
  },
  "max_100m": {
   "gradient_pct": 18.416298834576082,
   "start_distance_m": 34.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 84.0,
   "start_elevation_m": 313.1242418423984,
   "end_elevation_m": 331.5405406769745,
   "start_xy": [
    584264.456265139,
    4475139.662567798
   ],
   "end_xy": [
    584165.3437857074,
    4475152.951660363
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.18738431118345,
   "start_distance_m": 290.0,
   "end_distance_m": 295.0,
   "midpoint_distance_m": 292.5,
   "start_elevation_m": 341.65150074237647,
   "end_elevation_m": 341.3421315268173,
   "start_xy": [
    584010.8799805312,
    4475174.790453611
   ],
   "end_xy": [
    584005.9292175447,
    4475175.490414932
   ]
  },
  "min_10m": {
   "gradient_pct": -5.93079748226728,
   "start_distance_m": 286.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 291.0,
   "start_elevation_m": 341.87458249227865,
   "end_elevation_m": 341.2815027440519,
   "start_xy": [
    584014.8405909203,
    4475174.230484553
   ],
   "end_xy": [
    584004.9390649474,
    4475175.6304071965
   ]
  },
  "min_20m": {
   "gradient_pct": -5.588489040386548,
   "start_distance_m": 276.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 286.0,
   "start_elevation_m": 342.39920055212923,
   "end_elevation_m": 341.2815027440519,
   "start_xy": [
    584024.7421168932,
    4475172.830561909
   ],
   "end_xy": [
    584004.9390649474,
    4475175.6304071965
   ]
  },
  "min_25m": {
   "gradient_pct": -5.401414397904091,
   "start_distance_m": 271.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 283.5,
   "start_elevation_m": 342.63185634352794,
   "end_elevation_m": 341.2815027440519,
   "start_xy": [
    584029.6928798795,
    4475172.1306005865
   ],
   "end_xy": [
    584004.9390649474,
    4475175.6304071965
   ]
  },
  "min_50m": {
   "gradient_pct": -4.805726056633944,
   "start_distance_m": 247.0,
   "end_distance_m": 297.0,
   "midpoint_distance_m": 272.0,
   "start_elevation_m": 343.64062268480876,
   "end_elevation_m": 341.2377596564918,
   "start_xy": [
    584053.4565422144,
    4475168.770786241
   ],
   "end_xy": [
    584003.9489123502,
    4475175.7703994615
   ]
  },
  "min_100m": {
   "gradient_pct": -1.2577207385724591,
   "start_distance_m": 221.0,
   "end_distance_m": 321.0,
   "midpoint_distance_m": 271.0,
   "start_elevation_m": 343.2226439536974,
   "end_elevation_m": 341.96492321512494,
   "start_xy": [
    584079.2005097436,
    4475165.130987367
   ],
   "end_xy": [
    584004.5451719739,
    4475193.208550914
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.64900364033997,
   "start_distance_m": 107.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 108.0,
   "start_elevation_m": 327.3737694117824,
   "end_elevation_m": 327.8067494845892,
   "start_xy": [
    584192.0880697024,
    4475149.246110423
   ],
   "end_xy": [
    584190.1053794165,
    4475149.508673234
   ]
  },
  "max_3m": {
   "gradient_pct": 21.544489164193692,
   "start_distance_m": 107.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 108.5,
   "start_elevation_m": 327.3737694117824,
   "end_elevation_m": 328.0201040867082,
   "start_xy": [
    584192.0880697024,
    4475149.246110423
   ],
   "end_xy": [
    584189.1140342735,
    4475149.63995464
   ]
  }
 },
 "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_x58y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T12:34:03+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-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": [
   "x58y448"
  ],
  "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": "Pittsburgh",
  "county": "Pennsylvania"
 }
}