{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (54.3603, -1.0535)",
 "slug": "discovered-lane-54-3603-1-0535-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.112457383942342,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 348.0,
   "end_distance_m": 350.0,
   "start_elevation_m": 225.05864652012036,
   "end_elevation_m": 225.5208956677992,
   "min_gradient_pct": -16.49595012768401,
   "suppressed_max_gradient_pct": 30.97496443455867,
   "suppressed_location_m": [
    0.0,
    2.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.493415111937527,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 313.0,
   "end_distance_m": 316.0,
   "start_elevation_m": 219.09013583875995,
   "end_elevation_m": 219.76493829211807,
   "min_gradient_pct": -11.857982882025908,
   "suppressed_max_gradient_pct": 29.907795050147,
   "suppressed_location_m": [
    0.0,
    3.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.52232099101377,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 311.0,
   "end_distance_m": 316.0,
   "start_elevation_m": 218.6388222425674,
   "end_elevation_m": 219.76493829211807,
   "min_gradient_pct": -10.540554267766424,
   "suppressed_max_gradient_pct": 27.21117732227242,
   "suppressed_location_m": [
    29.0,
    34.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.197407470092116,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 310.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 218.418301272123,
   "end_elevation_m": 220.6380420191322,
   "min_gradient_pct": -10.194653583305637,
   "suppressed_max_gradient_pct": 25.72365638042811,
   "suppressed_location_m": [
    28.0,
    38.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.30895096422563,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 304.0,
   "end_distance_m": 324.0,
   "start_elevation_m": 217.18376627238752,
   "end_elevation_m": 221.44555646523264,
   "min_gradient_pct": -9.069832466605448,
   "suppressed_max_gradient_pct": 23.386071861580575,
   "suppressed_location_m": [
    25.0,
    45.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.86082729021166,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 299.0,
   "end_distance_m": 324.0,
   "start_elevation_m": 216.23034964267973,
   "end_elevation_m": 221.44555646523264,
   "min_gradient_pct": -8.263733406172719,
   "suppressed_max_gradient_pct": 22.642627282805847,
   "suppressed_location_m": [
    26.0,
    51.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.657072137892158,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 275.0,
   "end_distance_m": 325.0,
   "start_elevation_m": 212.2920532614848,
   "end_elevation_m": 221.62058933043087,
   "min_gradient_pct": -5.0615802029338965
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.22856097409155,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 273.0,
   "end_distance_m": 373.0,
   "start_elevation_m": 211.99066653216977,
   "end_elevation_m": 229.21922750626132,
   "min_gradient_pct": -3.170747939437206
  }
 ],
 "shape": {
  "ascent_concentration": 0.52,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 185.0,
  "shape_class": "stepped"
 },
 "length_m": 1270.5002634532646,
 "start_elevation_m": 179.4392992204201,
 "end_elevation_m": 248.70310665899564,
 "endpoint_gain_m": 69.26380743857553,
 "overall_gradient_pct": 5.451695637615536,
 "accumulated_ascent_m": 81.79561622546495,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.52232099101377,
   "start_distance_m": 311.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 313.5,
   "start_elevation_m": 218.6388222425674,
   "end_elevation_m": 219.76493829211807,
   "start_xy": [
    462166.34253409173,
    496330.66956500936
   ],
   "end_xy": [
    462171.26358663786,
    496331.5545744517
   ]
  },
  "max_10m": {
   "gradient_pct": 22.197407470092116,
   "start_distance_m": 310.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 315.0,
   "start_elevation_m": 218.418301272123,
   "end_elevation_m": 220.6380420191322,
   "start_xy": [
    462165.3583286862,
    496330.49253473314
   ],
   "end_xy": [
    462175.20043377514,
    496332.2625536364
   ]
  },
  "max_20m": {
   "gradient_pct": 21.30895096422563,
   "start_distance_m": 304.0,
   "end_distance_m": 324.0,
   "midpoint_distance_m": 314.0,
   "start_elevation_m": 217.18376627238752,
   "end_elevation_m": 221.44555646523264,
   "start_xy": [
    462159.4530718982,
    496329.43048854265
   ],
   "end_xy": [
    462179.13779543247,
    496332.9662535355
   ]
  },
  "max_25m": {
   "gradient_pct": 20.86082729021166,
   "start_distance_m": 299.0,
   "end_distance_m": 324.0,
   "midpoint_distance_m": 311.5,
   "start_elevation_m": 216.23034964267973,
   "end_elevation_m": 221.44555646523264,
   "start_xy": [
    462154.5320193537,
    496328.54547909106
   ],
   "end_xy": [
    462179.13779543247,
    496332.9662535355
   ]
  },
  "max_50m": {
   "gradient_pct": 18.657072137892158,
   "start_distance_m": 275.0,
   "end_distance_m": 325.0,
   "midpoint_distance_m": 300.0,
   "start_elevation_m": 212.2920532614848,
   "end_elevation_m": 221.62058933043087,
   "start_xy": [
    462130.95817232894,
    496324.0758474724
   ],
   "end_xy": [
    462180.135985972,
    496333.0259746493
   ]
  },
  "max_100m": {
   "gradient_pct": 17.22856097409155,
   "start_distance_m": 273.0,
   "end_distance_m": 373.0,
   "midpoint_distance_m": 323.0,
   "start_elevation_m": 211.99066653216977,
   "end_elevation_m": 229.21922750626132,
   "start_xy": [
    462129.0185951107,
    496323.5879538217
   ],
   "end_xy": [
    462223.74668280483,
    496316.1012962001
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.540554267766424,
   "start_distance_m": 852.0,
   "end_distance_m": 857.0,
   "midpoint_distance_m": 854.5,
   "start_elevation_m": 240.65906574279322,
   "end_elevation_m": 240.1320380294049,
   "start_xy": [
    462387.17146096594,
    496746.06661555124
   ],
   "end_xy": [
    462390.49712619407,
    496749.8002394992
   ]
  },
  "min_10m": {
   "gradient_pct": -10.194653583305637,
   "start_distance_m": 849.0,
   "end_distance_m": 859.0,
   "midpoint_distance_m": 854.0,
   "start_elevation_m": 240.96876605621563,
   "end_elevation_m": 239.94930069788506,
   "start_xy": [
    462385.17669434,
    496743.8258777022
   ],
   "end_xy": [
    462391.82697061135,
    496751.29406473186
   ]
  },
  "min_20m": {
   "gradient_pct": -9.069832466605448,
   "start_distance_m": 845.0,
   "end_distance_m": 865.0,
   "midpoint_distance_m": 855.0,
   "start_elevation_m": 241.31547270381324,
   "end_elevation_m": 239.50150621049215,
   "start_xy": [
    462382.51650901366,
    496740.83866952365
   ],
   "end_xy": [
    462395.817000355,
    496755.77509814315
   ]
  },
  "min_25m": {
   "gradient_pct": -8.263733406172719,
   "start_distance_m": 843.0,
   "end_distance_m": 868.0,
   "midpoint_distance_m": 855.5,
   "start_elevation_m": 241.43763616229012,
   "end_elevation_m": 239.37170281074694,
   "start_xy": [
    462381.1866645964,
    496739.344844291
   ],
   "end_xy": [
    462397.81226347265,
    496758.01539370534
   ]
  },
  "min_50m": {
   "gradient_pct": -5.0615802029338965,
   "start_distance_m": 825.0,
   "end_distance_m": 875.0,
   "midpoint_distance_m": 850.0,
   "start_elevation_m": 241.76262526604836,
   "end_elevation_m": 239.2318351645814,
   "start_xy": [
    462373.21214225155,
    496723.557125216
   ],
   "end_xy": [
    462402.4672154249,
    496763.243339733
   ]
  },
  "min_100m": {
   "gradient_pct": -3.170747939437206,
   "start_distance_m": 990.0,
   "end_distance_m": 1090.0,
   "midpoint_distance_m": 1040.0,
   "start_elevation_m": 243.67270479034173,
   "end_elevation_m": 240.50195685090452,
   "start_xy": [
    462476.5917318156,
    496851.1261575402
   ],
   "end_xy": [
    462544.55769855104,
    496924.28441748256
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.112457383942342,
   "start_distance_m": 348.0,
   "end_distance_m": 350.0,
   "midpoint_distance_m": 349.0,
   "start_elevation_m": 225.05864652012036,
   "end_elevation_m": 225.5208956677992,
   "start_xy": [
    462201.59229612135,
    496327.1314973064
   ],
   "end_xy": [
    462203.2520770447,
    496326.0156445892
   ]
  },
  "max_3m": {
   "gradient_pct": 22.493415111937527,
   "start_distance_m": 313.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 314.5,
   "start_elevation_m": 219.09013583875995,
   "end_elevation_m": 219.76493829211807,
   "start_xy": [
    462168.31097274355,
    496331.0234707069
   ],
   "end_xy": [
    462171.26358663786,
    496331.5545744517
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.035,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.001,
   "obstruction_max_height_m": 3.76,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    44.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "cd1381c557ec0196a6c481fc125290b249b285c2",
   "code_git_dirty": "true",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:faa4beed0662d2f6",
   "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-260920-uk",
   "road_pbf": "batch-england-chunk115.pbf",
   "region_key": "england",
   "crs": "EPSG:27700",
   "elevation_provider_key": "england",
   "authority": "os-open-roads",
   "registry_pbf": "england-2026-08-27.osm.pbf"
  },
  "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/dtm_1m/E460000_N496000_2000m.tif",
   "data/cache/england/dtm_1m/E462000_N496000_2000m.tif"
  ],
  "calculated_at": "2026-09-21T03:04:50+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/remeasure-260920/uk/batch-england-chunk115.pbf",
  "osm_snapshot": "",
  "run_id": "remeasure-260920-uk",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
   "E460000_N496000_2000m.tif",
   "E462000_N496000_2000m.tif"
  ],
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "mask_basin_extension_m": 24.0,
  "carriageway": {
   "stations": 57,
   "stations_resolved": 57,
   "width_median_m": 5.25,
   "width_p10_m": 3.25,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.07,
   "unbounded_share": 0.93,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.25,
   "window_m": [
    299.0,
    324.0
   ],
   "width_at_max25_m": 8.0,
   "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": {
    "stations": 57,
    "stations_resolved": 57,
    "width_median_m": 9.0,
    "width_p10_m": 5.0,
    "width_min_m": 3.0,
    "width_max_m": 12.0,
    "bounded_share": 0.333,
    "unbounded_share": 0.667,
    "confidence_median": 0.0,
    "width_median_bounded_m": 6.0,
    "window_m": [
     299.0,
     324.0
    ],
    "width_at_max25_m": 12.0,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "remeasured": {
   "on": "2026-09-21",
   "why": "corpus re-measure 2026-09-21: a mask that exists today reaching a page published before it did; fallers only (Peter: fold the fallers)",
   "published_max25_pct": 22.64,
   "max25_pct": 20.86
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Bransdale",
  "county": "North Yorkshire"
 }
}