{
 "ocl_version": "0.1.0",
 "name": "George Road",
 "slug": "george-road-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 20.621077845615332,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 458.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 329.3726978485569,
   "end_elevation_m": 329.78511940546923,
   "min_gradient_pct": -2.1219065076650168
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.384868808967365,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 457.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 329.1735733412002,
   "end_elevation_m": 329.78511940546923,
   "min_gradient_pct": -2.05738499911566
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.339368293606412,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 455.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 328.7681509907889,
   "end_elevation_m": 329.78511940546923,
   "min_gradient_pct": -1.9503775614793994
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.17557589212629,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 450.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 327.7675618162566,
   "end_elevation_m": 329.78511940546923,
   "min_gradient_pct": -1.8869260003475574
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.097321961220587,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 444.0,
   "end_distance_m": 464.0,
   "start_elevation_m": 326.564813045973,
   "end_elevation_m": 330.5842774382171,
   "min_gradient_pct": -1.760414107098427
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.09421155145492,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 443.0,
   "end_distance_m": 468.0,
   "start_elevation_m": 326.3606524079536,
   "end_elevation_m": 331.3842052958173,
   "min_gradient_pct": -1.6478901074019632
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.62750819727114,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 433.0,
   "end_distance_m": 483.0,
   "start_elevation_m": 324.44453629684216,
   "end_elevation_m": 334.25829039547773,
   "min_gradient_pct": -1.0489084529200454
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.167864099396866,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 398.0,
   "end_distance_m": 498.0,
   "start_elevation_m": 318.6896286858629,
   "end_elevation_m": 336.85749278525975,
   "min_gradient_pct": 0.35977640433412716
  }
 ],
 "shape": {
  "ascent_concentration": 0.519,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 251.0,
  "shape_class": "stepped"
 },
 "length_m": 877.1168119029991,
 "start_elevation_m": 299.43601923596964,
 "end_elevation_m": 364.1638640277232,
 "endpoint_gain_m": 64.72784479175357,
 "overall_gradient_pct": 7.379615110935973,
 "accumulated_ascent_m": 65.78815089364087,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.339368293606412,
   "start_distance_m": 455.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 457.5,
   "start_elevation_m": 328.7681509907889,
   "end_elevation_m": 329.78511940546923,
   "start_xy": [
    579318.80045434,
    4511830.490693368
   ],
   "end_xy": [
    579314.2887100468,
    4511832.632101055
   ]
  },
  "max_10m": {
   "gradient_pct": 20.17557589212629,
   "start_distance_m": 450.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 455.0,
   "start_elevation_m": 327.7675618162566,
   "end_elevation_m": 329.78511940546923,
   "start_xy": [
    579323.398595524,
    4511828.52674452
   ],
   "end_xy": [
    579314.2887100468,
    4511832.632101055
   ]
  },
  "max_20m": {
   "gradient_pct": 20.097321961220587,
   "start_distance_m": 444.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 454.0,
   "start_elevation_m": 326.564813045973,
   "end_elevation_m": 330.5842774382171,
   "start_xy": [
    579328.9163058617,
    4511826.169868257
   ],
   "end_xy": [
    579310.8136600769,
    4511834.613016412
   ]
  },
  "max_25m": {
   "gradient_pct": 20.09421155145492,
   "start_distance_m": 443.0,
   "end_distance_m": 468.0,
   "midpoint_distance_m": 455.5,
   "start_elevation_m": 326.3606524079536,
   "end_elevation_m": 331.3842052958173,
   "start_xy": [
    579329.8362361261,
    4511825.777786346
   ],
   "end_xy": [
    579307.3386587885,
    4511836.594017145
   ]
  },
  "max_50m": {
   "gradient_pct": 19.62750819727114,
   "start_distance_m": 433.0,
   "end_distance_m": 483.0,
   "midpoint_distance_m": 458.0,
   "start_elevation_m": 324.44453629684216,
   "end_elevation_m": 334.25829039547773,
   "start_xy": [
    579339.0324780246,
    4511821.849794713
   ],
   "end_xy": [
    579294.306466938,
    4511844.021126428
   ]
  },
  "max_100m": {
   "gradient_pct": 18.167864099396866,
   "start_distance_m": 398.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 448.0,
   "start_elevation_m": 318.6896286858629,
   "end_elevation_m": 336.85749278525975,
   "start_xy": [
    579371.2201735978,
    4511808.103812988
   ],
   "end_xy": [
    579282.3056629164,
    4511852.783824494
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.9503775614793994,
   "start_distance_m": 191.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 193.5,
   "start_elevation_m": 306.9109200882524,
   "end_elevation_m": 306.8134012101784,
   "start_xy": [
    579566.998041138,
    4511741.211103353
   ],
   "end_xy": [
    579562.2437719239,
    4511742.759301475
   ]
  },
  "min_10m": {
   "gradient_pct": -1.8869260003475574,
   "start_distance_m": 190.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 195.0,
   "start_elevation_m": 306.9262906951001,
   "end_elevation_m": 306.7375980950653,
   "start_xy": [
    579567.9488354755,
    4511740.90128076
   ],
   "end_xy": [
    579558.4404083906,
    4511743.998019797
   ]
  },
  "min_20m": {
   "gradient_pct": -1.760414107098427,
   "start_distance_m": 189.0,
   "end_distance_m": 209.0,
   "midpoint_distance_m": 199.0,
   "start_elevation_m": 306.94198616563335,
   "end_elevation_m": 306.58990334421367,
   "start_xy": [
    579568.8995973396,
    4511740.591358386
   ],
   "end_xy": [
    579549.8828498643,
    4511746.785165502
   ]
  },
  "min_25m": {
   "gradient_pct": -1.6478901074019632,
   "start_distance_m": 188.0,
   "end_distance_m": 213.0,
   "midpoint_distance_m": 200.5,
   "start_elevation_m": 306.95461739014496,
   "end_elevation_m": 306.54264486329447,
   "start_xy": [
    579569.8503592036,
    4511740.281436012
   ],
   "end_xy": [
    579546.0793422933,
    4511748.023441523
   ]
  },
  "min_50m": {
   "gradient_pct": -1.0489084529200454,
   "start_distance_m": 179.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 204.0,
   "start_elevation_m": 307.0051096997527,
   "end_elevation_m": 306.4806554732927,
   "start_xy": [
    579578.4079070421,
    4511737.494257431
   ],
   "end_xy": [
    579530.8658735018,
    4511752.978268364
   ]
  },
  "min_100m": {
   "gradient_pct": 0.35977640433412716,
   "start_distance_m": 165.0,
   "end_distance_m": 265.0,
   "midpoint_distance_m": 215.0,
   "start_elevation_m": 306.740431566853,
   "end_elevation_m": 307.1002079711871,
   "start_xy": [
    579591.5835982804,
    4511732.775774058
   ],
   "end_xy": [
    579496.6354919125,
    4511764.126392752
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 20.621077845615332,
   "start_distance_m": 458.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 459.0,
   "start_elevation_m": 329.3726978485569,
   "end_elevation_m": 329.78511940546923,
   "start_xy": [
    579316.0448088708,
    4511831.6759359855
   ],
   "end_xy": [
    579314.2887100468,
    4511832.632101055
   ]
  },
  "max_3m": {
   "gradient_pct": 20.384868808967365,
   "start_distance_m": 457.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 458.5,
   "start_elevation_m": 329.1735733412002,
   "end_elevation_m": 329.78511940546923,
   "start_xy": [
    579316.9610686704,
    4511831.275969579
   ],
   "end_xy": [
    579314.2887100468,
    4511832.632101055
   ]
  }
 },
 "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",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "8f4becd2ed8ab26772f5cd961ca7d1d0c2823252",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "remeasure-valley-260921-us",
   "road_pbf": "batch-usa-pa-west-chunk000.pbf",
   "region_key": "usa-pa-west",
   "crs": "EPSG:26917",
   "elevation_provider_key": "usa3dep",
   "authority": "usa-inventory",
   "registry_pbf": "pennsylvania-2026-09-07.osm.pbf",
   "tile_index_snapshot": "sha256:5dec7fe6cae6588f"
  },
  "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_x57y452_PA_WesternPA_2019_D20.tif",
   "data/cache/usa/pa-west/USGS_1M_17_x58y452_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-22T00:31:44+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/valley-260921/us/batch-usa-pa-west-chunk000.pbf",
  "osm_snapshot": "",
  "run_id": "remeasure-valley-260921-us",
  "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": [
   "x57y452",
   "x58y452"
  ],
  "route_base_cut_m": 640.0,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "structure_own_ways": 1,
  "structure_own_ways_source": "map-matched to the road network: the entry carried no way list, so the ways the route runs along were found by geometry (ukclimb.batch.own_ways_by_geometry)",
  "prior_doc": {
   "slug": "george-road-2",
   "calculated_at": "2026-09-07T15:13:31+00:00",
   "code_git_sha": null,
   "analysis_version": "0.1.0",
   "run_id": "pa-run4-260907",
   "path": "/root/uk-climbs/output/valley-260921/us/priors/george-road-2/george-road-2.json",
   "spans": 0,
   "sources": []
  },
  "carriageway": {
   "stations": 42,
   "stations_resolved": 42,
   "width_median_m": 6.0,
   "width_p10_m": 5.25,
   "width_min_m": 2.0,
   "width_max_m": 8.5,
   "bounded_share": 0.048,
   "unbounded_share": 0.952,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.25,
   "window_m": [
    443.0,
    468.0
   ],
   "width_at_max25_m": 6.0,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "status": "unavailable \u2014 no DSM raster (surface model absent or point-cloud only, which cannot serve off-line samples)"
   }
  },
  "remeasured": {
   "on": "2026-09-22",
   "why": "valley-crossing extent re-measure 2026-09-22: low-to-summit (640.0 m -> 1517.0 m)",
   "published_max25_pct": 20.1,
   "max25_pct": 20.09
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Forward",
  "county": "Pennsylvania"
 }
}