{
 "ocl_version": "0.1.0",
 "name": "Park Boulevard",
 "slug": "park-boulevard",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.142141467655165,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 392.0,
   "end_distance_m": 394.0,
   "start_elevation_m": 381.53957026944335,
   "end_elevation_m": 382.02241309879645,
   "min_gradient_pct": -0.6574329897972575
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.645111627295517,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 391.0,
   "end_distance_m": 394.0,
   "start_elevation_m": 381.3130597499776,
   "end_elevation_m": 382.02241309879645,
   "min_gradient_pct": -0.08218041423144011
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.858962263578633,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 390.0,
   "end_distance_m": 395.0,
   "start_elevation_m": 381.0994492583522,
   "end_elevation_m": 382.2423973715311,
   "min_gradient_pct": 0.3126885651147404
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.892055400035133,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 385.0,
   "end_distance_m": 395.0,
   "start_elevation_m": 380.0531918315276,
   "end_elevation_m": 382.2423973715311,
   "min_gradient_pct": 0.6201645734614658
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.073939906664805,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 380.0,
   "end_distance_m": 400.0,
   "start_elevation_m": 379.02707710946976,
   "end_elevation_m": 383.2418650908027,
   "min_gradient_pct": 1.792160405578045
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.896648330480275,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 378.0,
   "end_distance_m": 403.0,
   "start_elevation_m": 378.63175785740685,
   "end_elevation_m": 383.8559199400269,
   "min_gradient_pct": 2.5574213508837147
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.20718439820166,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 365.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 376.87731907593604,
   "end_elevation_m": 385.9809112750369,
   "min_gradient_pct": 4.068703430661344
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.529891026915607,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 320.0,
   "end_distance_m": 420.0,
   "start_elevation_m": 371.00215779906694,
   "end_elevation_m": 386.53204882598254,
   "min_gradient_pct": 4.736741817307575
  }
 ],
 "shape": {
  "ascent_concentration": 0.421,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 103.0,
  "shape_class": "sustained"
 },
 "length_m": 555.9999999997851,
 "start_elevation_m": 351.94693172143735,
 "end_elevation_m": 395.43472749583526,
 "endpoint_gain_m": 43.48779577439791,
 "overall_gradient_pct": 7.821546002592575,
 "accumulated_ascent_m": 43.51140065010469,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.858962263578633,
   "start_distance_m": 390.0,
   "end_distance_m": 395.0,
   "midpoint_distance_m": 392.5,
   "start_elevation_m": 381.0994492583522,
   "end_elevation_m": 382.2423973715311,
   "start_xy": [
    439353.5904105381,
    4595221.897262945
   ],
   "end_xy": [
    439350.3027036188,
    4595218.130170802
   ]
  },
  "max_10m": {
   "gradient_pct": 21.892055400035133,
   "start_distance_m": 385.0,
   "end_distance_m": 395.0,
   "midpoint_distance_m": 390.0,
   "start_elevation_m": 380.0531918315276,
   "end_elevation_m": 382.2423973715311,
   "start_xy": [
    439356.8781174573,
    4595225.664355088
   ],
   "end_xy": [
    439350.3027036188,
    4595218.130170802
   ]
  },
  "max_20m": {
   "gradient_pct": 21.073939906664805,
   "start_distance_m": 380.0,
   "end_distance_m": 400.0,
   "midpoint_distance_m": 390.0,
   "start_elevation_m": 379.02707710946976,
   "end_elevation_m": 383.2418650908027,
   "start_xy": [
    439360.16582437657,
    4595229.43144723
   ],
   "end_xy": [
    439347.0149966995,
    4595214.363078659
   ]
  },
  "max_25m": {
   "gradient_pct": 20.896648330480275,
   "start_distance_m": 378.0,
   "end_distance_m": 403.0,
   "midpoint_distance_m": 390.5,
   "start_elevation_m": 378.63175785740685,
   "end_elevation_m": 383.8559199400269,
   "start_xy": [
    439361.48090714426,
    4595230.938284088
   ],
   "end_xy": [
    439345.042372548,
    4595212.102823373
   ]
  },
  "max_50m": {
   "gradient_pct": 18.20718439820166,
   "start_distance_m": 365.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 390.0,
   "start_elevation_m": 376.87731907593604,
   "end_elevation_m": 385.9809112750369,
   "start_xy": [
    439369.9702658228,
    4595240.783287274
   ],
   "end_xy": [
    439337.1518759418,
    4595203.06180223
   ]
  },
  "max_100m": {
   "gradient_pct": 15.529891026915607,
   "start_distance_m": 320.0,
   "end_distance_m": 420.0,
   "midpoint_distance_m": 370.0,
   "start_elevation_m": 371.00215779906694,
   "end_elevation_m": 386.53204882598254,
   "start_xy": [
    439399.1296362688,
    4595275.057637963
   ],
   "end_xy": [
    439333.86416902253,
    4595199.294710088
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.3126885651147404,
   "start_distance_m": 498.0,
   "end_distance_m": 503.0,
   "midpoint_distance_m": 500.5,
   "start_elevation_m": 393.0943578931702,
   "end_elevation_m": 393.1099923214259,
   "start_xy": [
    439282.5759410822,
    4595140.528072658
   ],
   "end_xy": [
    439279.28823416296,
    4595136.760980515
   ]
  },
  "min_10m": {
   "gradient_pct": 0.6201645734614658,
   "start_distance_m": 498.0,
   "end_distance_m": 508.0,
   "midpoint_distance_m": 503.0,
   "start_elevation_m": 393.0943578931702,
   "end_elevation_m": 393.15637435051633,
   "start_xy": [
    439282.5759410822,
    4595140.528072658
   ],
   "end_xy": [
    439276.0005272437,
    4595132.993888373
   ]
  },
  "min_20m": {
   "gradient_pct": 1.792160405578045,
   "start_distance_m": 498.0,
   "end_distance_m": 518.0,
   "midpoint_distance_m": 508.0,
   "start_elevation_m": 393.0943578931702,
   "end_elevation_m": 393.4527899742858,
   "start_xy": [
    439282.5759410822,
    4595140.528072658
   ],
   "end_xy": [
    439269.45390002156,
    4595125.43476779
   ]
  },
  "min_25m": {
   "gradient_pct": 2.5574213508837147,
   "start_distance_m": 495.0,
   "end_distance_m": 520.0,
   "midpoint_distance_m": 507.5,
   "start_elevation_m": 392.9181605959163,
   "end_elevation_m": 393.5575159336372,
   "start_xy": [
    439284.54856523377,
    4595142.7883279435
   ],
   "end_xy": [
    439268.1500046214,
    4595123.918239919
   ]
  },
  "min_50m": {
   "gradient_pct": 4.068703430661344,
   "start_distance_m": 498.0,
   "end_distance_m": 548.0,
   "midpoint_distance_m": 523.0,
   "start_elevation_m": 393.0943578931702,
   "end_elevation_m": 395.12870960850086,
   "start_xy": [
    439282.5759410822,
    4595140.528072658
   ],
   "end_xy": [
    439249.8954690193,
    4595102.686849715
   ]
  },
  "min_100m": {
   "gradient_pct": 4.736741817307575,
   "start_distance_m": 205.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 255.0,
   "start_elevation_m": 365.2409171473273,
   "end_elevation_m": 369.9776589646349,
   "start_xy": [
    439473.67349007074,
    4595362.625874882
   ],
   "end_xy": [
    439408.8494264174,
    4595286.482421527
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.142141467655165,
   "start_distance_m": 392.0,
   "end_distance_m": 394.0,
   "midpoint_distance_m": 393.0,
   "start_elevation_m": 381.53957026944335,
   "end_elevation_m": 382.02241309879645,
   "start_xy": [
    439352.27532777033,
    4595220.390426087
   ],
   "end_xy": [
    439350.96024500264,
    4595218.8835892305
   ]
  },
  "max_3m": {
   "gradient_pct": 23.645111627295517,
   "start_distance_m": 391.0,
   "end_distance_m": 394.0,
   "midpoint_distance_m": 392.5,
   "start_elevation_m": 381.3130597499776,
   "end_elevation_m": 382.02241309879645,
   "start_xy": [
    439352.9328691542,
    4595221.143844516
   ],
   "end_xy": [
    439350.96024500264,
    4595218.8835892305
   ]
  }
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_1M_18_x43y460_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T15:26:30+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, PA_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x43y460"
  ],
  "route_summit_trim_m": 103.9,
  "route_summit_trim_loss_m": 3.2,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_Northcentral_2019_B19: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Glenburn",
  "county": "Pennsylvania"
 }
}