{
 "ocl_version": "0.1.0",
 "name": "Gilbert Road",
 "slug": "gilbert-road-3",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.702814798019745,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 5436.0,
   "end_distance_m": 5438.0,
   "start_elevation_m": 621.1248837868721,
   "end_elevation_m": 621.5989400828325,
   "min_gradient_pct": -15.330060024660952
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.753076039696378,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 5435.0,
   "end_distance_m": 5438.0,
   "start_elevation_m": 620.9463478016417,
   "end_elevation_m": 621.5989400828325,
   "min_gradient_pct": -10.944914917807106
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 18.832798122800796,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4528.0,
   "end_distance_m": 4533.0,
   "start_elevation_m": 507.421983301247,
   "end_elevation_m": 508.36362320738704,
   "min_gradient_pct": -8.926925610863918
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.549268009067873,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3277.0,
   "end_distance_m": 3287.0,
   "start_elevation_m": 386.582015948267,
   "end_elevation_m": 388.3369427491738,
   "min_gradient_pct": -5.300258938976867
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.121970339395887,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3267.0,
   "end_distance_m": 3287.0,
   "start_elevation_m": 384.9125486812946,
   "end_elevation_m": 388.3369427491738,
   "min_gradient_pct": -5.054595839246758
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.929058256383996,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4773.0,
   "end_distance_m": 4798.0,
   "start_elevation_m": 542.9249615839751,
   "end_elevation_m": 547.1572261480711,
   "min_gradient_pct": -5.0364448039536
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.39774934722891,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4783.0,
   "end_distance_m": 4833.0,
   "start_elevation_m": 544.5925011427022,
   "end_elevation_m": 552.7913758163166,
   "min_gradient_pct": -4.505963465009813
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.164180902677685,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4742.0,
   "end_distance_m": 4842.0,
   "start_elevation_m": 538.0685283847349,
   "end_elevation_m": 554.2327092874126,
   "min_gradient_pct": -3.730520637253562
  }
 ],
 "shape": {
  "ascent_concentration": 0.366,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 312.0,
  "shape_class": "sustained"
 },
 "length_m": 5578.284863553909,
 "start_elevation_m": 203.24803743102143,
 "end_elevation_m": 623.5298941870118,
 "endpoint_gain_m": 420.28185675599036,
 "overall_gradient_pct": 7.53424873480251,
 "accumulated_ascent_m": 427.96013074225084,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 18.832798122800796,
   "start_distance_m": 4528.0,
   "end_distance_m": 4533.0,
   "midpoint_distance_m": 4530.5,
   "start_elevation_m": 507.421983301247,
   "end_elevation_m": 508.36362320738704,
   "start_xy": [
    261194.26004218706,
    4431599.5604256485
   ],
   "end_xy": [
    261189.46360846082,
    4431598.148255861
   ]
  },
  "max_10m": {
   "gradient_pct": 17.549268009067873,
   "start_distance_m": 3277.0,
   "end_distance_m": 3287.0,
   "midpoint_distance_m": 3282.0,
   "start_elevation_m": 386.582015948267,
   "end_elevation_m": 388.3369427491738,
   "start_xy": [
    260666.88777814386,
    4430561.671312566
   ],
   "end_xy": [
    260672.43458173337,
    4430569.985421741
   ]
  },
  "max_20m": {
   "gradient_pct": 17.121970339395887,
   "start_distance_m": 3267.0,
   "end_distance_m": 3287.0,
   "midpoint_distance_m": 3277.0,
   "start_elevation_m": 384.9125486812946,
   "end_elevation_m": 388.3369427491738,
   "start_xy": [
    260662.64522792,
    4430552.615885044
   ],
   "end_xy": [
    260672.43458173337,
    4430569.985421741
   ]
  },
  "max_25m": {
   "gradient_pct": 16.929058256383996,
   "start_distance_m": 4773.0,
   "end_distance_m": 4798.0,
   "midpoint_distance_m": 4785.5,
   "start_elevation_m": 542.9249615839751,
   "end_elevation_m": 547.1572261480711,
   "start_xy": [
    260956.05049734015,
    4431545.104996015
   ],
   "end_xy": [
    260932.21719160536,
    4431537.556914289
   ]
  },
  "max_50m": {
   "gradient_pct": 16.39774934722891,
   "start_distance_m": 4783.0,
   "end_distance_m": 4833.0,
   "midpoint_distance_m": 4808.0,
   "start_elevation_m": 544.5925011427022,
   "end_elevation_m": 552.7913758163166,
   "start_xy": [
    260946.51717504623,
    4431542.085763325
   ],
   "end_xy": [
    260899.0963737035,
    4431526.343228177
   ]
  },
  "max_100m": {
   "gradient_pct": 16.164180902677685,
   "start_distance_m": 4742.0,
   "end_distance_m": 4842.0,
   "midpoint_distance_m": 4792.0,
   "start_elevation_m": 538.0685283847349,
   "end_elevation_m": 554.2327092874126,
   "start_xy": [
    260986.3248903113,
    4431551.689075256
   ],
   "end_xy": [
    260890.87892278726,
    4431522.672601468
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.926925610863918,
   "start_distance_m": 2158.0,
   "end_distance_m": 2163.0,
   "midpoint_distance_m": 2160.5,
   "start_elevation_m": 278.49038718125684,
   "end_elevation_m": 278.04404090071364,
   "start_xy": [
    261099.10126429526,
    4429762.550820693
   ],
   "end_xy": [
    261094.89110701683,
    4429765.204853159
   ]
  },
  "min_10m": {
   "gradient_pct": -5.300258938976867,
   "start_distance_m": 1771.0,
   "end_distance_m": 1781.0,
   "midpoint_distance_m": 1776.0,
   "start_elevation_m": 264.4985088409026,
   "end_elevation_m": 263.96848294700493,
   "start_xy": [
    261442.50138108435,
    4429592.25288436
   ],
   "end_xy": [
    261434.40835577092,
    4429598.126804795
   ]
  },
  "min_20m": {
   "gradient_pct": -5.054595839246758,
   "start_distance_m": 1760.0,
   "end_distance_m": 1780.0,
   "midpoint_distance_m": 1770.0,
   "start_elevation_m": 265.0301573064803,
   "end_elevation_m": 264.01923813863095,
   "start_xy": [
    261451.4037089291,
    4429585.791571882
   ],
   "end_xy": [
    261435.21765830228,
    4429597.539412752
   ]
  },
  "min_25m": {
   "gradient_pct": -5.0364448039536,
   "start_distance_m": 1756.0,
   "end_distance_m": 1781.0,
   "midpoint_distance_m": 1768.5,
   "start_elevation_m": 265.22759414799333,
   "end_elevation_m": 263.96848294700493,
   "start_xy": [
    261454.64091905448,
    4429583.442003708
   ],
   "end_xy": [
    261434.40835577092,
    4429598.126804795
   ]
  },
  "min_50m": {
   "gradient_pct": -4.505963465009813,
   "start_distance_m": 1745.0,
   "end_distance_m": 1795.0,
   "midpoint_distance_m": 1770.0,
   "start_elevation_m": 265.67692649809476,
   "end_elevation_m": 263.42394476558985,
   "start_xy": [
    261463.54324689924,
    4429576.98069123
   ],
   "end_xy": [
    261423.07812033215,
    4429606.350293404
   ]
  },
  "min_100m": {
   "gradient_pct": -3.730520637253562,
   "start_distance_m": 1698.0,
   "end_distance_m": 1798.0,
   "midpoint_distance_m": 1748.0,
   "start_elevation_m": 267.04500303008643,
   "end_elevation_m": 263.3144823928329,
   "start_xy": [
    261501.52637392934,
    4429549.2996450905
   ],
   "end_xy": [
    261420.65021273814,
    4429608.112469535
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.702814798019745,
   "start_distance_m": 5436.0,
   "end_distance_m": 5438.0,
   "midpoint_distance_m": 5437.0,
   "start_elevation_m": 621.1248837868721,
   "end_elevation_m": 621.5989400828325,
   "start_xy": [
    260383.93308318034,
    4431334.673686213
   ],
   "end_xy": [
    260381.95928223856,
    4431334.351025645
   ]
  },
  "max_3m": {
   "gradient_pct": 21.753076039696378,
   "start_distance_m": 5435.0,
   "end_distance_m": 5438.0,
   "midpoint_distance_m": 5436.5,
   "start_elevation_m": 620.9463478016417,
   "end_elevation_m": 621.5989400828325,
   "start_xy": [
    260384.9199836512,
    4431334.835016497
   ],
   "end_xy": [
    260381.95928223856,
    4431334.351025645
   ]
  }
 },
 "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_one_meter_x26y443_PA_South_Central_B1_2017.tif",
   "data/cache/usa/pa/USGS_one_meter_x26y444_PA_South_Central_B1_2017.tif"
  ],
  "calculated_at": "2026-09-07T11:33:40+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-band3.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_South_Central_B1_2017 (collected 2017)",
  "elevation_tile_ids": [
   "x26y443",
   "x26y444"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Hamilton",
  "county": "Pennsylvania"
 }
}