{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (53.3408, -1.8988)",
 "slug": "discovered-lane-53-3408-1-8988",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.60181516053342,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 333.0,
   "end_distance_m": 335.0,
   "start_elevation_m": 255.14610965498017,
   "end_elevation_m": 255.77814595819083,
   "min_gradient_pct": -19.06435468035994,
   "suppressed_max_gradient_pct": 36.18552861042588,
   "suppressed_location_m": [
    47.0,
    49.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.73834705933128,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 332.0,
   "end_distance_m": 335.0,
   "start_elevation_m": 254.8559955464109,
   "end_elevation_m": 255.77814595819083,
   "min_gradient_pct": -17.00619539772769,
   "suppressed_max_gradient_pct": 31.92040973587022,
   "suppressed_location_m": [
    46.0,
    49.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.771298445411844,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 330.0,
   "end_distance_m": 335.0,
   "start_elevation_m": 254.43958103592024,
   "end_elevation_m": 255.77814595819083,
   "min_gradient_pct": -10.405692654722998,
   "suppressed_max_gradient_pct": 29.926736456408207,
   "suppressed_location_m": [
    44.0,
    49.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.72876148302322,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 325.0,
   "end_distance_m": 335.0,
   "start_elevation_m": 253.1052698098885,
   "end_elevation_m": 255.77814595819083,
   "min_gradient_pct": -3.710280078082917,
   "suppressed_max_gradient_pct": 27.64022762710482,
   "suppressed_location_m": [
    41.0,
    51.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.578725678858632,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 364.0,
   "end_distance_m": 384.0,
   "start_elevation_m": 258.6229547879251,
   "end_elevation_m": 262.3386999236968,
   "min_gradient_pct": 3.154908304303916,
   "suppressed_max_gradient_pct": 23.7630013419151,
   "suppressed_location_m": [
    41.0,
    61.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.961338999250074,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 519.0,
   "end_distance_m": 544.0,
   "start_elevation_m": 275.42588982495744,
   "end_elevation_m": 279.91622457476996,
   "min_gradient_pct": 3.7093188902964584,
   "suppressed_max_gradient_pct": 21.999834144898728,
   "suppressed_location_m": [
    36.0,
    61.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.572526451736167,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 506.0,
   "end_distance_m": 556.0,
   "start_elevation_m": 273.19744813844227,
   "end_elevation_m": 281.98371136431035,
   "min_gradient_pct": 5.091666394938443
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.591522867195522,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 477.0,
   "end_distance_m": 577.0,
   "start_elevation_m": 270.0864927831108,
   "end_elevation_m": 284.67801565030635,
   "min_gradient_pct": 5.594860824431322
  }
 ],
 "shape": {
  "ascent_concentration": 0.304,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 94.0,
  "shape_class": "sustained"
 },
 "length_m": 580.971874217555,
 "start_elevation_m": 224.17412234277282,
 "end_elevation_m": 284.9434897814942,
 "endpoint_gain_m": 60.76936743872136,
 "overall_gradient_pct": 10.459949979603527,
 "accumulated_ascent_m": 62.7300407271583,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.771298445411844,
   "start_distance_m": 330.0,
   "end_distance_m": 335.0,
   "midpoint_distance_m": 332.5,
   "start_elevation_m": 254.43958103592024,
   "end_elevation_m": 255.77814595819083,
   "start_xy": [
    406969.8694065413,
    382671.42011974973
   ],
   "end_xy": [
    406974.3972772477,
    382673.54105917463
   ]
  },
  "max_10m": {
   "gradient_pct": 26.72876148302322,
   "start_distance_m": 325.0,
   "end_distance_m": 335.0,
   "midpoint_distance_m": 330.0,
   "start_elevation_m": 253.1052698098885,
   "end_elevation_m": 255.77814595819083,
   "start_xy": [
    406965.3409786665,
    382669.30036970705
   ],
   "end_xy": [
    406974.3972772477,
    382673.54105917463
   ]
  },
  "max_20m": {
   "gradient_pct": 18.578725678858632,
   "start_distance_m": 364.0,
   "end_distance_m": 384.0,
   "midpoint_distance_m": 374.0,
   "start_elevation_m": 258.6229547879251,
   "end_elevation_m": 262.3386999236968,
   "start_xy": [
    406998.2319562862,
    382689.5049235889
   ],
   "end_xy": [
    407005.3558666383,
    382707.94595808187
   ]
  },
  "max_25m": {
   "gradient_pct": 17.961338999250074,
   "start_distance_m": 519.0,
   "end_distance_m": 544.0,
   "midpoint_distance_m": 531.5,
   "start_elevation_m": 275.42588982495744,
   "end_elevation_m": 279.91622457476996,
   "start_xy": [
    407108.6081130265,
    382779.8827530446
   ],
   "end_xy": [
    407131.9975780375,
    382771.09278272226
   ]
  },
  "max_50m": {
   "gradient_pct": 17.572526451736167,
   "start_distance_m": 506.0,
   "end_distance_m": 556.0,
   "midpoint_distance_m": 531.0,
   "start_elevation_m": 273.19744813844227,
   "end_elevation_m": 281.98371136431035,
   "start_xy": [
    407095.8442138812,
    382781.29546490713
   ],
   "end_xy": [
    407143.2014401069,
    382766.7947066399
   ]
  },
  "max_100m": {
   "gradient_pct": 14.591522867195522,
   "start_distance_m": 477.0,
   "end_distance_m": 577.0,
   "midpoint_distance_m": 527.0,
   "start_elevation_m": 270.0864927831108,
   "end_elevation_m": 284.67801565030635,
   "start_xy": [
    407069.57041113556,
    382769.4434040632
   ],
   "end_xy": [
    407162.80768638186,
    382759.2717411941
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.405692654722998,
   "start_distance_m": 71.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 73.5,
   "start_elevation_m": 234.03714039460328,
   "end_elevation_m": 233.51685576186713,
   "start_xy": [
    406712.32917980145,
    382652.64275422785
   ],
   "end_xy": [
    406717.14447312296,
    382653.85089231073
   ]
  },
  "min_10m": {
   "gradient_pct": -3.710280078082917,
   "start_distance_m": 71.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 76.0,
   "start_elevation_m": 234.03714039460328,
   "end_elevation_m": 233.666112386795,
   "start_xy": [
    406712.32917980145,
    382652.64275422785
   ],
   "end_xy": [
    406722.0882114285,
    382654.59885288455
   ]
  },
  "min_20m": {
   "gradient_pct": 3.154908304303916,
   "start_distance_m": 141.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 239.72831031957878,
   "end_elevation_m": 240.35929198043956,
   "start_xy": [
    406782.028497419,
    382656.16050246125
   ],
   "end_xy": [
    406802.0208520509,
    382656.583716313
   ]
  },
  "min_25m": {
   "gradient_pct": 3.7093188902964584,
   "start_distance_m": 134.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 146.5,
   "start_elevation_m": 239.27629555560765,
   "end_elevation_m": 240.20362527818176,
   "start_xy": [
    406775.0293005001,
    382656.05450000754
   ],
   "end_xy": [
    406800.02633885713,
    382656.4362404247
   ]
  },
  "min_50m": {
   "gradient_pct": 5.091666394938443,
   "start_distance_m": 107.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 237.63181307299783,
   "end_elevation_m": 240.17764627046705,
   "start_xy": [
    406748.0324306461,
    382655.6435348903
   ],
   "end_xy": [
    406798.026635256,
    382656.4045045288
   ]
  },
  "min_100m": {
   "gradient_pct": 5.594860824431322,
   "start_distance_m": 122.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 238.59538854692494,
   "end_elevation_m": 244.19024937135626,
   "start_xy": [
    406763.0306964719,
    382655.87153914355
   ],
   "end_xy": [
    406862.83905886096,
    382661.2855279395
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.60181516053342,
   "start_distance_m": 333.0,
   "end_distance_m": 335.0,
   "midpoint_distance_m": 334.0,
   "start_elevation_m": 255.14610965498017,
   "end_elevation_m": 255.77814595819083,
   "start_xy": [
    406972.5862076203,
    382672.6925157159
   ],
   "end_xy": [
    406974.3972772477,
    382673.54105917463
   ]
  },
  "max_3m": {
   "gradient_pct": 30.73834705933128,
   "start_distance_m": 332.0,
   "end_distance_m": 335.0,
   "midpoint_distance_m": 333.5,
   "start_elevation_m": 254.8559955464109,
   "end_elevation_m": 255.77814595819083,
   "start_xy": [
    406971.6806725234,
    382672.26824436453
   ],
   "end_xy": [
    406974.3972772477,
    382673.54105917463
   ]
  }
 },
 "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": 0.088,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.172,
   "obstruction_max_height_m": 8.68,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    50.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/bulk_dtm_1m/SK0580.tif"
  ],
  "calculated_at": "2026-09-11T23:40:30+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk04.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-england-260911",
  "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": [
   "SK0580.tif"
  ],
  "climb_origin": "discovered",
  "mask_basin_extension_m": 30.0,
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Chapel-en-le-Frith",
  "county": "Derbyshire"
 }
}