{
 "ocl_version": "0.1.0",
 "name": "Barchesky Road",
 "slug": "barchesky-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.29923898238394,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2382.0,
   "end_distance_m": 2384.0,
   "start_elevation_m": 358.2538764564282,
   "end_elevation_m": 358.9598612360759,
   "min_gradient_pct": -8.416354557536465
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.370724263224396,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2382.0,
   "end_distance_m": 2385.0,
   "start_elevation_m": 358.2538764564282,
   "end_elevation_m": 359.28499818432493,
   "min_gradient_pct": -8.254599469573046
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.63694812409881,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2381.0,
   "end_distance_m": 2386.0,
   "start_elevation_m": 357.9365638711442,
   "end_elevation_m": 359.5684112773491,
   "min_gradient_pct": -8.156209069513807
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.56117013427911,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2380.0,
   "end_distance_m": 2390.0,
   "start_elevation_m": 357.7197962226169,
   "end_elevation_m": 360.4759132360448,
   "min_gradient_pct": -7.996465260071659
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.074762554482447,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2379.0,
   "end_distance_m": 2399.0,
   "start_elevation_m": 357.5409137325647,
   "end_elevation_m": 362.3558662434612,
   "min_gradient_pct": -7.678864655272832
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.636763428949962,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2380.0,
   "end_distance_m": 2405.0,
   "start_elevation_m": 357.7197962226169,
   "end_elevation_m": 363.37898707985437,
   "min_gradient_pct": -7.490853678473968
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.87615149396288,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2372.0,
   "end_distance_m": 2422.0,
   "start_elevation_m": 356.6584580230422,
   "end_elevation_m": 366.09653377002365,
   "min_gradient_pct": -7.465620321848178
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.007544180619163,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2322.0,
   "end_distance_m": 2422.0,
   "start_elevation_m": 352.0889895894045,
   "end_elevation_m": 366.09653377002365,
   "min_gradient_pct": -6.507339463043877
  }
 ],
 "shape": {
  "ascent_concentration": 0.345,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 64.0,
  "shape_class": "sustained"
 },
 "length_m": 2535.999999999789,
 "start_elevation_m": 299.38574127930076,
 "end_elevation_m": 368.7824107746949,
 "endpoint_gain_m": 69.39666949539412,
 "overall_gradient_pct": 2.7364617308911634,
 "accumulated_ascent_m": 87.92423664527627,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.63694812409881,
   "start_distance_m": 2381.0,
   "end_distance_m": 2386.0,
   "midpoint_distance_m": 2383.5,
   "start_elevation_m": 357.9365638711442,
   "end_elevation_m": 359.5684112773491,
   "start_xy": [
    638834.6401753479,
    4469801.947394802
   ],
   "end_xy": [
    638835.5660469297,
    4469806.860923251
   ]
  },
  "max_10m": {
   "gradient_pct": 27.56117013427911,
   "start_distance_m": 2380.0,
   "end_distance_m": 2390.0,
   "midpoint_distance_m": 2385.0,
   "start_elevation_m": 357.7197962226169,
   "end_elevation_m": 360.4759132360448,
   "start_xy": [
    638834.4550010316,
    4469800.964689113
   ],
   "end_xy": [
    638836.306744195,
    4469810.79174601
   ]
  },
  "max_20m": {
   "gradient_pct": 24.074762554482447,
   "start_distance_m": 2379.0,
   "end_distance_m": 2399.0,
   "midpoint_distance_m": 2389.0,
   "start_elevation_m": 357.5409137325647,
   "end_elevation_m": 362.3558662434612,
   "start_xy": [
    638834.2698267152,
    4469799.981983423
   ],
   "end_xy": [
    638838.0074802164,
    4469819.629558296
   ]
  },
  "max_25m": {
   "gradient_pct": 22.636763428949962,
   "start_distance_m": 2380.0,
   "end_distance_m": 2405.0,
   "midpoint_distance_m": 2392.5,
   "start_elevation_m": 357.7197962226169,
   "end_elevation_m": 363.37898707985437,
   "start_xy": [
    638834.4550010316,
    4469800.964689113
   ],
   "end_xy": [
    638839.1520515598,
    4469825.519376327
   ]
  },
  "max_50m": {
   "gradient_pct": 18.87615149396288,
   "start_distance_m": 2372.0,
   "end_distance_m": 2422.0,
   "midpoint_distance_m": 2397.0,
   "start_elevation_m": 356.6584580230422,
   "end_elevation_m": 366.09653377002365,
   "start_xy": [
    638832.9736065008,
    4469793.103043595
   ],
   "end_xy": [
    638842.3950036991,
    4469842.207194082
   ]
  },
  "max_100m": {
   "gradient_pct": 14.007544180619163,
   "start_distance_m": 2322.0,
   "end_distance_m": 2422.0,
   "midpoint_distance_m": 2372.0,
   "start_elevation_m": 352.0889895894045,
   "end_elevation_m": 366.09653377002365,
   "start_xy": [
    638814.0173341599,
    4469747.422904766
   ],
   "end_xy": [
    638842.3950036991,
    4469842.207194082
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.156209069513807,
   "start_distance_m": 1507.0,
   "end_distance_m": 1512.0,
   "midpoint_distance_m": 1509.5,
   "start_elevation_m": 326.51755420970477,
   "end_elevation_m": 326.1097437562291,
   "start_xy": [
    638447.5737344705,
    4469029.342307497
   ],
   "end_xy": [
    638451.3610615293,
    4469032.606683969
   ]
  },
  "min_10m": {
   "gradient_pct": -7.996465260071659,
   "start_distance_m": 1507.0,
   "end_distance_m": 1517.0,
   "midpoint_distance_m": 1512.0,
   "start_elevation_m": 326.51755420970477,
   "end_elevation_m": 325.7179076836976,
   "start_xy": [
    638447.5737344705,
    4469029.342307497
   ],
   "end_xy": [
    638455.1483885881,
    4469035.87106044
   ]
  },
  "min_20m": {
   "gradient_pct": -7.678864655272832,
   "start_distance_m": 1501.0,
   "end_distance_m": 1521.0,
   "midpoint_distance_m": 1511.0,
   "start_elevation_m": 326.9744205481057,
   "end_elevation_m": 325.4386476170511,
   "start_xy": [
    638443.346476465,
    4469025.133049889
   ],
   "end_xy": [
    638458.1782502352,
    4469038.482561618
   ]
  },
  "min_25m": {
   "gradient_pct": -7.490853678473968,
   "start_distance_m": 1494.0,
   "end_distance_m": 1519.0,
   "midpoint_distance_m": 1506.5,
   "start_elevation_m": 327.4559440041428,
   "end_elevation_m": 325.5832305845243,
   "start_xy": [
    638439.235712223,
    4469019.467220969
   ],
   "end_xy": [
    638456.6633194117,
    4469037.176811029
   ]
  },
  "min_50m": {
   "gradient_pct": -7.465620321848178,
   "start_distance_m": 1467.0,
   "end_distance_m": 1517.0,
   "midpoint_distance_m": 1492.0,
   "start_elevation_m": 329.4507178446217,
   "end_elevation_m": 325.7179076836976,
   "start_xy": [
    638423.3799072896,
    4468997.613309422
   ],
   "end_xy": [
    638455.1483885881,
    4469035.87106044
   ]
  },
  "min_100m": {
   "gradient_pct": -6.507339463043877,
   "start_distance_m": 1431.0,
   "end_distance_m": 1531.0,
   "midpoint_distance_m": 1481.0,
   "start_elevation_m": 331.48178621519713,
   "end_elevation_m": 324.97444675215326,
   "start_xy": [
    638402.238834045,
    4468968.474760692
   ],
   "end_xy": [
    638465.7529043527,
    4469045.011314562
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.29923898238394,
   "start_distance_m": 2382.0,
   "end_distance_m": 2384.0,
   "midpoint_distance_m": 2383.0,
   "start_elevation_m": 358.2538764564282,
   "end_elevation_m": 358.9598612360759,
   "start_xy": [
    638834.8253496643,
    4469802.930100492
   ],
   "end_xy": [
    638835.195698297,
    4469804.895511872
   ]
  },
  "max_3m": {
   "gradient_pct": 34.370724263224396,
   "start_distance_m": 2382.0,
   "end_distance_m": 2385.0,
   "midpoint_distance_m": 2383.5,
   "start_elevation_m": 358.2538764564282,
   "end_elevation_m": 359.28499818432493,
   "start_xy": [
    638834.8253496643,
    4469802.930100492
   ],
   "end_xy": [
    638835.3808726133,
    4469805.878217561
   ]
  }
 },
 "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_x63y447_PA_WesternPA_2019_D20.tif",
   "data/cache/usa/pa-west/USGS_1M_17_x63y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T17:11:51+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": [
   "x63y447",
   "x63y448"
  ],
  "route_summit_trim_m": 1521.3,
  "route_summit_trim_loss_m": 6.9,
  "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": "Derry",
  "county": "Pennsylvania"
 }
}