{
 "ocl_version": "0.1.0",
 "name": "Powerline Road",
 "slug": "powerline-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.115809257473074,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 101.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 708.8716696309141,
   "end_elevation_m": 709.3339858160635,
   "min_gradient_pct": -1.5082177561964727
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.975521663602194,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 708.6447201661555,
   "end_elevation_m": 709.3339858160635,
   "min_gradient_pct": 0.2926808452987946
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.9187418718584,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 104.0,
   "start_elevation_m": 708.4140488314988,
   "end_elevation_m": 709.5599859250917,
   "min_gradient_pct": 0.8937295767373143
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.183855632357563,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 110.0,
   "end_distance_m": 120.0,
   "start_elevation_m": 710.7780123826064,
   "end_elevation_m": 712.9963979458422,
   "min_gradient_pct": 1.0022641563966772
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.874045258611545,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 708.4140488314988,
   "end_elevation_m": 712.7888578832211,
   "min_gradient_pct": 1.1873815984870362
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.615312715844084,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 96.0,
   "end_distance_m": 121.0,
   "start_elevation_m": 707.7771311649708,
   "end_elevation_m": 713.1809593439318,
   "min_gradient_pct": 1.231991060141354
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.39127192303522,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 82.0,
   "end_distance_m": 132.0,
   "start_elevation_m": 704.9850323598762,
   "end_elevation_m": 715.1806683213938,
   "min_gradient_pct": 1.4929474388889048
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.362316988219504,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 51.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 699.9088625431984,
   "end_elevation_m": 718.2711795314179,
   "min_gradient_pct": 2.8957378265096168
  }
 ],
 "shape": {
  "ascent_concentration": 0.398,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 250.0,
  "shape_class": "sustained"
 },
 "length_m": 437.99999999999164,
 "start_elevation_m": 693.6107581555173,
 "end_elevation_m": 743.4541725426365,
 "endpoint_gain_m": 49.843414387119196,
 "overall_gradient_pct": 11.379774974228344,
 "accumulated_ascent_m": 49.873578742243126,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.9187418718584,
   "start_distance_m": 99.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 101.5,
   "start_elevation_m": 708.4140488314988,
   "end_elevation_m": 709.5599859250917,
   "start_xy": [
    268151.82634709566,
    4638992.64431699
   ],
   "end_xy": [
    268146.8266129681,
    4638992.592754855
   ]
  },
  "max_10m": {
   "gradient_pct": 22.183855632357563,
   "start_distance_m": 110.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 710.7780123826064,
   "end_elevation_m": 712.9963979458422,
   "start_xy": [
    268140.826932015,
    4638992.530880292
   ],
   "end_xy": [
    268130.8274637599,
    4638992.427756022
   ]
  },
  "max_20m": {
   "gradient_pct": 21.874045258611545,
   "start_distance_m": 99.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 708.4140488314988,
   "end_elevation_m": 712.7888578832211,
   "start_xy": [
    268151.82634709566,
    4638992.64431699
   ],
   "end_xy": [
    268131.8274105854,
    4638992.438068449
   ]
  },
  "max_25m": {
   "gradient_pct": 21.615312715844084,
   "start_distance_m": 96.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 108.5,
   "start_elevation_m": 707.7771311649708,
   "end_elevation_m": 713.1809593439318,
   "start_xy": [
    268154.8261875722,
    4638992.675254271
   ],
   "end_xy": [
    268129.8275169344,
    4638992.417443595
   ]
  },
  "max_50m": {
   "gradient_pct": 20.39127192303522,
   "start_distance_m": 82.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 107.0,
   "start_elevation_m": 704.9850323598762,
   "end_elevation_m": 715.1806683213938,
   "start_xy": [
    268168.82544312935,
    4638992.81962825
   ],
   "end_xy": [
    268118.82810185384,
    4638992.304006897
   ]
  },
  "max_100m": {
   "gradient_pct": 18.362316988219504,
   "start_distance_m": 51.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 101.0,
   "start_elevation_m": 699.9088625431984,
   "end_elevation_m": 718.2711795314179,
   "start_xy": [
    268199.82379472017,
    4638993.139313488
   ],
   "end_xy": [
    268099.8291121691,
    4638992.108070783
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.8937295767373143,
   "start_distance_m": 433.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 435.5,
   "start_elevation_m": 743.4094860637996,
   "end_elevation_m": 743.4541725426365,
   "start_xy": [
    267817.9860170083,
    4638991.177957017
   ],
   "end_xy": [
    267812.98700947146,
    4638991.079168414
   ]
  },
  "min_10m": {
   "gradient_pct": 1.0022641563966772,
   "start_distance_m": 428.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 433.0,
   "start_elevation_m": 743.3539461269968,
   "end_elevation_m": 743.4541725426365,
   "start_xy": [
    267822.9850116962,
    4638991.278217231
   ],
   "end_xy": [
    267812.98700947146,
    4638991.079168414
   ]
  },
  "min_20m": {
   "gradient_pct": 1.1873815984870362,
   "start_distance_m": 400.0,
   "end_distance_m": 420.0,
   "midpoint_distance_m": 410.0,
   "start_elevation_m": 742.9841003503917,
   "end_elevation_m": 743.2215766700891,
   "start_xy": [
    267850.9793819483,
    4638991.839674431
   ],
   "end_xy": [
    267830.9834031968,
    4638991.438633574
   ]
  },
  "min_25m": {
   "gradient_pct": 1.231991060141354,
   "start_distance_m": 413.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 425.5,
   "start_elevation_m": 743.1461747776011,
   "end_elevation_m": 743.4541725426365,
   "start_xy": [
    267837.9819957598,
    4638991.578997874
   ],
   "end_xy": [
    267812.98700947146,
    4638991.079168414
   ]
  },
  "min_50m": {
   "gradient_pct": 1.4929474388889048,
   "start_distance_m": 388.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 413.0,
   "start_elevation_m": 742.707698823192,
   "end_elevation_m": 743.4541725426365,
   "start_xy": [
    267862.9769691992,
    4638992.080298945
   ],
   "end_xy": [
    267812.98700947146,
    4638991.079168414
   ]
  },
  "min_100m": {
   "gradient_pct": 2.8957378265096168,
   "start_distance_m": 338.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 388.0,
   "start_elevation_m": 740.5584347161268,
   "end_elevation_m": 743.4541725426365,
   "start_xy": [
    267912.966916078,
    4638993.082901088
   ],
   "end_xy": [
    267812.98700947146,
    4638991.079168414
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.115809257473074,
   "start_distance_m": 101.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 102.0,
   "start_elevation_m": 708.8716696309141,
   "end_elevation_m": 709.3339858160635,
   "start_xy": [
    268149.82645344466,
    4638992.623692135
   ],
   "end_xy": [
    268147.8265597936,
    4638992.603067282
   ]
  },
  "max_3m": {
   "gradient_pct": 22.975521663602194,
   "start_distance_m": 100.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 101.5,
   "start_elevation_m": 708.6447201661555,
   "end_elevation_m": 709.3339858160635,
   "start_xy": [
    268150.82640027016,
    4638992.634004563
   ],
   "end_xy": [
    268147.8265597936,
    4638992.603067282
   ]
  }
 },
 "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"
  ]
 },
 "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_x26y464_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T14:36:07+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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x26y464"
  ],
  "route_summit_trim_m": 362.0,
  "route_summit_trim_loss_m": 18.7,
  "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": "Ulysses",
  "county": "Pennsylvania"
 }
}