{
 "ocl_version": "0.1.0",
 "name": "Rood Road",
 "slug": "rood-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.40146895087605,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2221.0,
   "end_distance_m": 2223.0,
   "start_elevation_m": 691.7365117900363,
   "end_elevation_m": 692.2845411690538,
   "min_gradient_pct": -13.96131648169785
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.033607647687557,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 919.0,
   "end_distance_m": 922.0,
   "start_elevation_m": 559.9479984069515,
   "end_elevation_m": 560.7590066363821,
   "min_gradient_pct": -13.22309792157436
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.928485391665617,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 918.0,
   "end_distance_m": 923.0,
   "start_elevation_m": 559.678870426232,
   "end_elevation_m": 561.0252946958153,
   "min_gradient_pct": -10.660222703434101
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.938224584277577,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 918.0,
   "end_distance_m": 928.0,
   "start_elevation_m": 559.678870426232,
   "end_elevation_m": 562.1726928846598,
   "min_gradient_pct": -7.3693132744278955
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.322149303162405,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 912.0,
   "end_distance_m": 932.0,
   "start_elevation_m": 558.35625765833,
   "end_elevation_m": 563.0206875189625,
   "min_gradient_pct": -5.666994083409236
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.736093692636587,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 910.0,
   "end_distance_m": 935.0,
   "start_elevation_m": 557.9461852834892,
   "end_elevation_m": 563.6302087066483,
   "min_gradient_pct": -5.150723353129251
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.88839729044753,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 883.0,
   "end_distance_m": 933.0,
   "start_elevation_m": 552.7921714599388,
   "end_elevation_m": 563.2363701051626,
   "min_gradient_pct": -3.075953368264436
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.981746147692547,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1091.0,
   "end_distance_m": 1191.0,
   "start_elevation_m": 586.1650148836317,
   "end_elevation_m": 604.1467610313242,
   "min_gradient_pct": 2.287934737546493
  }
 ],
 "shape": {
  "ascent_concentration": 0.364,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 244.0,
  "shape_class": "sustained"
 },
 "length_m": 2379.570151636069,
 "start_elevation_m": 471.34484355490304,
 "end_elevation_m": 697.06026126753,
 "endpoint_gain_m": 225.71541771262696,
 "overall_gradient_pct": 9.485554252621496,
 "accumulated_ascent_m": 228.22150393277565,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.928485391665617,
   "start_distance_m": 918.0,
   "end_distance_m": 923.0,
   "midpoint_distance_m": 920.5,
   "start_elevation_m": 559.678870426232,
   "end_elevation_m": 561.0252946958153,
   "start_xy": [
    383304.63763062865,
    4611709.771183198
   ],
   "end_xy": [
    383305.8840491231,
    4611714.613335709
   ]
  },
  "max_10m": {
   "gradient_pct": 24.938224584277577,
   "start_distance_m": 918.0,
   "end_distance_m": 928.0,
   "midpoint_distance_m": 923.0,
   "start_elevation_m": 559.678870426232,
   "end_elevation_m": 562.1726928846598,
   "start_xy": [
    383304.63763062865,
    4611709.771183198
   ],
   "end_xy": [
    383307.13046761754,
    4611719.45548822
   ]
  },
  "max_20m": {
   "gradient_pct": 23.322149303162405,
   "start_distance_m": 912.0,
   "end_distance_m": 932.0,
   "midpoint_distance_m": 922.0,
   "start_elevation_m": 558.35625765833,
   "end_elevation_m": 563.0206875189625,
   "start_xy": [
    383303.5991328854,
    4611703.886324159
   ],
   "end_xy": [
    383308.1276024131,
    4611723.329210228
   ]
  },
  "max_25m": {
   "gradient_pct": 22.736093692636587,
   "start_distance_m": 910.0,
   "end_distance_m": 935.0,
   "midpoint_distance_m": 922.5,
   "start_elevation_m": 557.9461852834892,
   "end_elevation_m": 563.6302087066483,
   "start_xy": [
    383303.4589293075,
    4611701.891244472
   ],
   "end_xy": [
    383308.8754535098,
    4611726.234501734
   ]
  },
  "max_50m": {
   "gradient_pct": 20.88839729044753,
   "start_distance_m": 883.0,
   "end_distance_m": 933.0,
   "midpoint_distance_m": 908.0,
   "start_elevation_m": 552.7921714599388,
   "end_elevation_m": 563.2363701051626,
   "start_xy": [
    383302.2333262967,
    4611674.944889348
   ],
   "end_xy": [
    383308.37688611203,
    4611724.297640731
   ]
  },
  "max_100m": {
   "gradient_pct": 17.981746147692547,
   "start_distance_m": 1091.0,
   "end_distance_m": 1191.0,
   "midpoint_distance_m": 1141.0,
   "start_elevation_m": 586.1650148836317,
   "end_elevation_m": 604.1467610313242,
   "start_xy": [
    383434.6390019486,
    4611814.315192682
   ],
   "end_xy": [
    383489.6658713936,
    4611897.294564361
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.660222703434101,
   "start_distance_m": 2224.0,
   "end_distance_m": 2229.0,
   "midpoint_distance_m": 2226.5,
   "start_elevation_m": 692.2955787917157,
   "end_elevation_m": 691.762567656544,
   "start_xy": [
    383744.1149629924,
    4612749.465418401
   ],
   "end_xy": [
    383743.5533724448,
    4612754.433779907
   ]
  },
  "min_10m": {
   "gradient_pct": -7.3693132744278955,
   "start_distance_m": 2369.0,
   "end_distance_m": 2379.0,
   "midpoint_distance_m": 2374.0,
   "start_elevation_m": 697.843655580403,
   "end_elevation_m": 697.1067242529602,
   "start_xy": [
    383749.94609607564,
    4612887.1671819715
   ],
   "end_xy": [
    383746.5529688439,
    4612896.573918259
   ]
  },
  "min_20m": {
   "gradient_pct": -5.666994083409236,
   "start_distance_m": 2359.0,
   "end_distance_m": 2379.0,
   "midpoint_distance_m": 2369.0,
   "start_elevation_m": 698.2401230696421,
   "end_elevation_m": 697.1067242529602,
   "start_xy": [
    383753.3392233074,
    4612877.760445683
   ],
   "end_xy": [
    383746.5529688439,
    4612896.573918259
   ]
  },
  "min_25m": {
   "gradient_pct": -5.150723353129251,
   "start_distance_m": 2354.0,
   "end_distance_m": 2379.0,
   "midpoint_distance_m": 2366.5,
   "start_elevation_m": 698.3944050912426,
   "end_elevation_m": 697.1067242529602,
   "start_xy": [
    383755.03578692325,
    4612873.057077539
   ],
   "end_xy": [
    383746.5529688439,
    4612896.573918259
   ]
  },
  "min_50m": {
   "gradient_pct": -3.075953368264436,
   "start_distance_m": 2329.0,
   "end_distance_m": 2379.0,
   "midpoint_distance_m": 2354.0,
   "start_elevation_m": 698.6447009370925,
   "end_elevation_m": 697.1067242529602,
   "start_xy": [
    383763.5186050026,
    4612849.54023682
   ],
   "end_xy": [
    383746.5529688439,
    4612896.573918259
   ]
  },
  "min_100m": {
   "gradient_pct": 2.287934737546493,
   "start_distance_m": 2129.0,
   "end_distance_m": 2229.0,
   "midpoint_distance_m": 2179.0,
   "start_elevation_m": 689.4746329189975,
   "end_elevation_m": 691.762567656544,
   "start_xy": [
    383759.3949730411,
    4612655.75010363
   ],
   "end_xy": [
    383743.5533724448,
    4612754.433779907
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.40146895087605,
   "start_distance_m": 2221.0,
   "end_distance_m": 2223.0,
   "midpoint_distance_m": 2222.0,
   "start_elevation_m": 691.7365117900363,
   "end_elevation_m": 692.2845411690538,
   "start_xy": [
    383744.4519173209,
    4612746.484401497
   ],
   "end_xy": [
    383744.22728110186,
    4612748.4717461
   ]
  },
  "max_3m": {
   "gradient_pct": 27.033607647687557,
   "start_distance_m": 919.0,
   "end_distance_m": 922.0,
   "midpoint_distance_m": 920.5,
   "start_elevation_m": 559.9479984069515,
   "end_elevation_m": 560.7590066363821,
   "start_xy": [
    383304.88691432757,
    4611710.739613701
   ],
   "end_xy": [
    383305.63476542424,
    4611713.644905207
   ]
  }
 },
 "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": [
   "descends_at_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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_1M_18_x38y462_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T23:20:24+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.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "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": [
   "x38y462"
  ],
  "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": "Albany",
  "county": "Pennsylvania"
 }
}