{
 "ocl_version": "0.1.0",
 "name": "Beech Street",
 "slug": "beech-street-4",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.023324233002086,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 426.0,
   "end_distance_m": 428.0,
   "start_elevation_m": 406.4084616778748,
   "end_elevation_m": 406.88892816253485,
   "min_gradient_pct": -0.020604987048500334
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.912310383443963,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 426.0,
   "end_distance_m": 429.0,
   "start_elevation_m": 406.4084616778748,
   "end_elevation_m": 407.12583098937813,
   "min_gradient_pct": -0.008372308716767899
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.705817118030836,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 425.0,
   "end_distance_m": 430.0,
   "start_elevation_m": 406.1776620095582,
   "end_elevation_m": 407.36295286545976,
   "min_gradient_pct": 0.09575910535886578
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.214468421157903,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 424.0,
   "end_distance_m": 434.0,
   "start_elevation_m": 405.9516259467797,
   "end_elevation_m": 408.2730727888955,
   "min_gradient_pct": 1.5763743986445888
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.89305018923443,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 420.0,
   "end_distance_m": 440.0,
   "start_elevation_m": 405.06011057841346,
   "end_elevation_m": 409.63872061626034,
   "min_gradient_pct": 2.5148348072724502
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.718424234981057,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 420.0,
   "end_distance_m": 445.0,
   "start_elevation_m": 405.06011057841346,
   "end_elevation_m": 410.7397166371587,
   "min_gradient_pct": 2.743952600889088
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.595138726914684,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 413.0,
   "end_distance_m": 463.0,
   "start_elevation_m": 403.62290963316,
   "end_elevation_m": 414.42047899661736,
   "min_gradient_pct": 3.3615562718008505
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.51125254618063,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 389.0,
   "end_distance_m": 489.0,
   "start_elevation_m": 399.5088322726875,
   "end_elevation_m": 419.02008481886816,
   "min_gradient_pct": 3.6770039925014544
  }
 ],
 "shape": {
  "ascent_concentration": 0.339,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 456.0,
  "shape_class": "sustained"
 },
 "length_m": 1274.2486234340618,
 "start_elevation_m": 366.3356359863262,
 "end_elevation_m": 519.6246045197893,
 "endpoint_gain_m": 153.28896853346305,
 "overall_gradient_pct": 12.029753512336853,
 "accumulated_ascent_m": 153.28938063320402,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.705817118030836,
   "start_distance_m": 425.0,
   "end_distance_m": 430.0,
   "midpoint_distance_m": 427.5,
   "start_elevation_m": 406.1776620095582,
   "end_elevation_m": 407.36295286545976,
   "start_xy": [
    652491.6156174935,
    4634533.136153695
   ],
   "end_xy": [
    652487.4123984787,
    4634535.844095702
   ]
  },
  "max_10m": {
   "gradient_pct": 23.214468421157903,
   "start_distance_m": 424.0,
   "end_distance_m": 434.0,
   "midpoint_distance_m": 429.0,
   "start_elevation_m": 405.9516259467797,
   "end_elevation_m": 408.2730727888955,
   "start_xy": [
    652492.4562612964,
    4634532.594565294
   ],
   "end_xy": [
    652484.0498232669,
    4634538.010449308
   ]
  },
  "max_20m": {
   "gradient_pct": 22.89305018923443,
   "start_distance_m": 420.0,
   "end_distance_m": 440.0,
   "midpoint_distance_m": 430.0,
   "start_elevation_m": 405.06011057841346,
   "end_elevation_m": 409.63872061626034,
   "start_xy": [
    652495.8188365083,
    4634530.428211688
   ],
   "end_xy": [
    652479.0059604492,
    4634541.2599797165
   ]
  },
  "max_25m": {
   "gradient_pct": 22.718424234981057,
   "start_distance_m": 420.0,
   "end_distance_m": 445.0,
   "midpoint_distance_m": 432.5,
   "start_elevation_m": 405.06011057841346,
   "end_elevation_m": 410.7397166371587,
   "start_xy": [
    652495.8188365083,
    4634530.428211688
   ],
   "end_xy": [
    652474.8027414344,
    4634543.967921724
   ]
  },
  "max_50m": {
   "gradient_pct": 21.595138726914684,
   "start_distance_m": 413.0,
   "end_distance_m": 463.0,
   "midpoint_distance_m": 438.0,
   "start_elevation_m": 403.62290963316,
   "end_elevation_m": 414.42047899661736,
   "start_xy": [
    652501.761453806,
    4634526.728853771
   ],
   "end_xy": [
    652459.6711529812,
    4634553.716512949
   ]
  },
  "max_100m": {
   "gradient_pct": 19.51125254618063,
   "start_distance_m": 389.0,
   "end_distance_m": 489.0,
   "midpoint_distance_m": 439.0,
   "start_elevation_m": 399.5088322726875,
   "end_elevation_m": 419.02008481886816,
   "start_xy": [
    652522.1369973235,
    4634514.046692033
   ],
   "end_xy": [
    652437.8144141044,
    4634567.797811386
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.09575910535886578,
   "start_distance_m": 1.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 3.5,
   "start_elevation_m": 366.3601431750428,
   "end_elevation_m": 366.36493113031077,
   "start_xy": [
    652801.3186505542,
    4634253.34868905
   ],
   "end_xy": [
    652798.2319033253,
    4634257.282134301
   ]
  },
  "min_10m": {
   "gradient_pct": 1.5763743986445888,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 366.3356359863262,
   "end_elevation_m": 366.4932734261907,
   "start_xy": [
    652801.936,
    4634252.562
   ],
   "end_xy": [
    652795.7625055423,
    4634260.428890502
   ]
  },
  "min_20m": {
   "gradient_pct": 2.5148348072724502,
   "start_distance_m": 40.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 367.8040710784918,
   "end_elevation_m": 368.3070380399463,
   "start_xy": [
    652777.2444274655,
    4634284.031449288
   ],
   "end_xy": [
    652765.7496216195,
    4634300.37580508
   ]
  },
  "min_25m": {
   "gradient_pct": 2.743952600889088,
   "start_distance_m": 41.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 53.5,
   "start_elevation_m": 367.83822374769784,
   "end_elevation_m": 368.5242118979201,
   "start_xy": [
    652776.6271849094,
    4634284.818222208
   ],
   "end_xy": [
    652762.4717915391,
    4634305.40132296
   ]
  },
  "min_50m": {
   "gradient_pct": 3.3615562718008505,
   "start_distance_m": 30.0,
   "end_distance_m": 80.0,
   "midpoint_distance_m": 55.0,
   "start_elevation_m": 367.4013215684197,
   "end_elevation_m": 369.0820997043201,
   "start_xy": [
    652783.4168530268,
    4634276.163720093
   ],
   "end_xy": [
    652754.8235213517,
    4634317.127531347
   ]
  },
  "min_100m": {
   "gradient_pct": 3.6770039925014544,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 366.3356359863262,
   "end_elevation_m": 370.0126399788277,
   "start_xy": [
    652801.936,
    4634252.562
   ],
   "end_xy": [
    652742.7777121103,
    4634333.077919974
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.023324233002086,
   "start_distance_m": 426.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 427.0,
   "start_elevation_m": 406.4084616778748,
   "end_elevation_m": 406.88892816253485,
   "start_xy": [
    652490.7749736905,
    4634533.677742097
   ],
   "end_xy": [
    652489.0936860846,
    4634534.760918899
   ]
  },
  "max_3m": {
   "gradient_pct": 23.912310383443963,
   "start_distance_m": 426.0,
   "end_distance_m": 429.0,
   "midpoint_distance_m": 427.5,
   "start_elevation_m": 406.4084616778748,
   "end_elevation_m": 407.12583098937813,
   "start_xy": [
    652490.7749736905,
    4634533.677742097
   ],
   "end_xy": [
    652488.2530422817,
    4634535.302507301
   ]
  }
 },
 "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_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_x65y464_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T15:26:54+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-band2.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": [
   "x65y464"
  ],
  "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": "Warren",
  "county": "Pennsylvania"
 }
}