{
 "ocl_version": "0.1.0",
 "name": "Rocklick Hollow Road",
 "slug": "rocklick-hollow-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.01894998106127,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 7038.0,
   "end_distance_m": 7040.0,
   "start_elevation_m": 764.1856419971514,
   "end_elevation_m": 764.7260209967726,
   "min_gradient_pct": -20.970138259957594
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.62921503116316,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 7313.0,
   "end_distance_m": 7316.0,
   "start_elevation_m": 787.3300873782789,
   "end_elevation_m": 788.0389638292138,
   "min_gradient_pct": -18.077563053356016
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.130702146760086,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 7313.0,
   "end_distance_m": 7318.0,
   "start_elevation_m": 787.3300873782789,
   "end_elevation_m": 788.4366224856169,
   "min_gradient_pct": -15.886903845978395
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 18.460361261146545,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 7311.0,
   "end_distance_m": 7321.0,
   "start_elevation_m": 787.0469072665359,
   "end_elevation_m": 788.8929433926505,
   "min_gradient_pct": -15.34362204007266
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 16.67692936038634,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 6912.0,
   "end_distance_m": 6932.0,
   "start_elevation_m": 747.3961087102385,
   "end_elevation_m": 750.7314945823158,
   "min_gradient_pct": -6.044385196330495
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.601678390808047,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 6909.0,
   "end_distance_m": 6934.0,
   "start_elevation_m": 746.9089366421221,
   "end_elevation_m": 751.0593562398241,
   "min_gradient_pct": -5.137893740306708
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.13844554772436,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 6891.0,
   "end_distance_m": 6941.0,
   "start_elevation_m": 744.0665676053181,
   "end_elevation_m": 752.1357903791803,
   "min_gradient_pct": -2.79102745777584
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.648348246819637,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 6858.0,
   "end_distance_m": 6958.0,
   "start_elevation_m": 739.5764863823418,
   "end_elevation_m": 754.2248346291615,
   "min_gradient_pct": -1.9308065475435683
  }
 ],
 "shape": {
  "ascent_concentration": 0.484,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 255.0,
  "shape_class": "stepped"
 },
 "length_m": 7441.351237169575,
 "start_elevation_m": 394.90246679551115,
 "end_elevation_m": 794.4380214983742,
 "endpoint_gain_m": 399.535554702863,
 "overall_gradient_pct": 5.369126412245958,
 "accumulated_ascent_m": 410.84597790164514,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.130702146760086,
   "start_distance_m": 7313.0,
   "end_distance_m": 7318.0,
   "midpoint_distance_m": 7315.5,
   "start_elevation_m": 787.3300873782789,
   "end_elevation_m": 788.4366224856169,
   "start_xy": [
    695203.2282789128,
    4445953.883201426
   ],
   "end_xy": [
    695206.8344641179,
    4445957.346643105
   ]
  },
  "max_10m": {
   "gradient_pct": 18.460361261146545,
   "start_distance_m": 7311.0,
   "end_distance_m": 7321.0,
   "midpoint_distance_m": 7316.0,
   "start_elevation_m": 787.0469072665359,
   "end_elevation_m": 788.8929433926505,
   "start_xy": [
    695201.8406333798,
    4445952.444394227
   ],
   "end_xy": [
    695208.9981752409,
    4445959.424708113
   ]
  },
  "max_20m": {
   "gradient_pct": 16.67692936038634,
   "start_distance_m": 6912.0,
   "end_distance_m": 6932.0,
   "midpoint_distance_m": 6922.0,
   "start_elevation_m": 747.3961087102385,
   "end_elevation_m": 750.7314945823158,
   "start_xy": [
    695381.4207913663,
    4445839.210424861
   ],
   "end_xy": [
    695362.2288461082,
    4445833.582882128
   ]
  },
  "max_25m": {
   "gradient_pct": 16.601678390808047,
   "start_distance_m": 6909.0,
   "end_distance_m": 6934.0,
   "midpoint_distance_m": 6921.5,
   "start_elevation_m": 746.9089366421221,
   "end_elevation_m": 751.0593562398241,
   "start_xy": [
    695384.2481162556,
    4445840.21040226
   ],
   "end_xy": [
    695360.3096515824,
    4445833.020127854
   ]
  },
  "max_50m": {
   "gradient_pct": 16.13844554772436,
   "start_distance_m": 6891.0,
   "end_distance_m": 6941.0,
   "midpoint_distance_m": 6916.0,
   "start_elevation_m": 744.0665676053181,
   "end_elevation_m": 752.1357903791803,
   "start_xy": [
    695401.1400816987,
    4445846.428239783
   ],
   "end_xy": [
    695353.6835249696,
    4445830.767267795
   ]
  },
  "max_100m": {
   "gradient_pct": 14.648348246819637,
   "start_distance_m": 6858.0,
   "end_distance_m": 6958.0,
   "midpoint_distance_m": 6908.0,
   "start_elevation_m": 739.5764863823418,
   "end_elevation_m": 754.2248346291615,
   "start_xy": [
    695432.6792446623,
    4445856.08085746
   ],
   "end_xy": [
    695342.669750595,
    4445820.250985697
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.886903845978395,
   "start_distance_m": 1619.0,
   "end_distance_m": 1624.0,
   "midpoint_distance_m": 1621.5,
   "start_elevation_m": 419.2336193293904,
   "end_elevation_m": 418.4392741370915,
   "start_xy": [
    698396.8062691084,
    4443747.500072824
   ],
   "end_xy": [
    698395.9755828964,
    4443752.430586024
   ]
  },
  "min_10m": {
   "gradient_pct": -15.34362204007266,
   "start_distance_m": 1614.0,
   "end_distance_m": 1624.0,
   "midpoint_distance_m": 1619.0,
   "start_elevation_m": 419.97363634109877,
   "end_elevation_m": 418.4392741370915,
   "start_xy": [
    698397.2806443186,
    4443742.545466359
   ],
   "end_xy": [
    698395.9755828964,
    4443752.430586024
   ]
  },
  "min_20m": {
   "gradient_pct": -6.044385196330495,
   "start_distance_m": 1606.0,
   "end_distance_m": 1626.0,
   "midpoint_distance_m": 1616.0,
   "start_elevation_m": 419.7563232002651,
   "end_elevation_m": 418.547446160999,
   "start_xy": [
    698397.0256519743,
    4443734.54953121
   ],
   "end_xy": [
    698395.6433084115,
    4443754.4027913045
   ]
  },
  "min_25m": {
   "gradient_pct": -5.137893740306708,
   "start_distance_m": 1600.0,
   "end_distance_m": 1625.0,
   "midpoint_distance_m": 1612.5,
   "start_elevation_m": 419.70934524450263,
   "end_elevation_m": 418.42487180942595,
   "start_xy": [
    698396.834407716,
    4443728.552579849
   ],
   "end_xy": [
    698395.8094456539,
    4443753.416688664
   ]
  },
  "min_50m": {
   "gradient_pct": -2.79102745777584,
   "start_distance_m": 914.0,
   "end_distance_m": 964.0,
   "midpoint_distance_m": 939.0,
   "start_elevation_m": 413.29891132549403,
   "end_elevation_m": 411.9033975966061,
   "start_xy": [
    698829.1595332646,
    4443241.8101474745
   ],
   "end_xy": [
    698797.3467025127,
    4443280.344369212
   ]
  },
  "min_100m": {
   "gradient_pct": -1.9308065475435683,
   "start_distance_m": 1300.0,
   "end_distance_m": 1400.0,
   "midpoint_distance_m": 1350.0,
   "start_elevation_m": 418.6404083945715,
   "end_elevation_m": 416.70960184702795,
   "start_xy": [
    698549.0224492053,
    4443495.859242391
   ],
   "end_xy": [
    698467.6091767127,
    4443553.792273911
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.01894998106127,
   "start_distance_m": 7038.0,
   "end_distance_m": 7040.0,
   "midpoint_distance_m": 7039.0,
   "start_elevation_m": 764.1856419971514,
   "end_elevation_m": 764.7260209967726,
   "start_xy": [
    695305.526868619,
    4445763.004637044
   ],
   "end_xy": [
    695303.64663908,
    4445763.686353173
   ]
  },
  "max_3m": {
   "gradient_pct": 23.62921503116316,
   "start_distance_m": 7313.0,
   "end_distance_m": 7316.0,
   "midpoint_distance_m": 7314.5,
   "start_elevation_m": 787.3300873782789,
   "end_elevation_m": 788.0389638292138,
   "start_xy": [
    695203.2282789128,
    4445953.883201426
   ],
   "end_xy": [
    695205.3919900359,
    4445955.961266434
   ]
  }
 },
 "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_x69y445_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T12:56:28+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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x69y445"
  ],
  "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": "Napier",
  "county": "Pennsylvania"
 }
}