{
 "ocl_version": "0.1.0",
 "name": "Hardknott Pass (west)",
 "slug": "hardknott-pass-west",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.10777926767048,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure",
    "structure_excluded"
   ],
   "start_distance_m": 854.0,
   "end_distance_m": 856.0,
   "start_elevation_m": 259.28684068253983,
   "end_elevation_m": 259.98899626789324,
   "min_gradient_pct": -63.64358910620069,
   "suppressed_max_gradient_pct": 121.54508399576116,
   "suppressed_location_m": [
    906.0,
    908.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.46501138956819,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure",
    "structure_excluded"
   ],
   "start_distance_m": 853.0,
   "end_distance_m": 856.0,
   "start_elevation_m": 258.9550459262062,
   "end_elevation_m": 259.98899626789324,
   "min_gradient_pct": -62.145437434422014,
   "suppressed_max_gradient_pct": 103.0988946880105,
   "suppressed_location_m": [
    905.0,
    908.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 33.0908716344652,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure",
    "structure_excluded"
   ],
   "start_distance_m": 852.0,
   "end_distance_m": 857.0,
   "start_elevation_m": 258.63307042671147,
   "end_elevation_m": 260.28761400843473,
   "min_gradient_pct": -59.88923365849132,
   "suppressed_max_gradient_pct": 80.09584928362301,
   "suppressed_location_m": [
    905.0,
    910.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.93216972950472,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 847.0,
   "end_distance_m": 857.0,
   "start_elevation_m": 257.19439703548426,
   "end_elevation_m": 260.28761400843473,
   "min_gradient_pct": -28.069941499617244
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 29.193748383857212,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 845.0,
   "end_distance_m": 865.0,
   "start_elevation_m": 256.6360449854617,
   "end_elevation_m": 262.47479466223314,
   "min_gradient_pct": -10.30112968391279
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 28.241606739292138,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 841.0,
   "end_distance_m": 866.0,
   "start_elevation_m": 255.64061483567377,
   "end_elevation_m": 262.7010165204968,
   "min_gradient_pct": -7.051470377258511
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.473785237406847,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 824.0,
   "end_distance_m": 874.0,
   "start_elevation_m": 252.3731189569984,
   "end_elevation_m": 264.11001157570183,
   "min_gradient_pct": -2.922418680097337
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.590245539573202,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 792.0,
   "end_distance_m": 892.0,
   "start_elevation_m": 250.70162827382072,
   "end_elevation_m": 265.2918738133939,
   "min_gradient_pct": -1.2870757172593983,
   "suppressed_max_gradient_pct": 15.061704729790563,
   "suppressed_location_m": [
    810.0,
    910.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.366,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 58.0,
  "shape_class": "sustained"
 },
 "length_m": 910.6410680909695,
 "start_elevation_m": 216.79045951760835,
 "end_elevation_m": 266.6959920692437,
 "endpoint_gain_m": 49.90553255163533,
 "overall_gradient_pct": 5.480263772449362,
 "accumulated_ascent_m": 57.316659547168086,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 33.0908716344652,
   "start_distance_m": 852.0,
   "end_distance_m": 857.0,
   "midpoint_distance_m": 854.5,
   "start_elevation_m": 258.63307042671147,
   "end_elevation_m": 260.28761400843473,
   "start_xy": [
    323894.299631194,
    501627.3072102057
   ],
   "end_xy": [
    323889.4030954014,
    501628.31910804246
   ]
  },
  "max_10m": {
   "gradient_pct": 30.93216972950472,
   "start_distance_m": 847.0,
   "end_distance_m": 857.0,
   "midpoint_distance_m": 852.0,
   "start_elevation_m": 257.19439703548426,
   "end_elevation_m": 260.28761400843473,
   "start_xy": [
    323898.9979933489,
    501625.75902303925
   ],
   "end_xy": [
    323889.4030954014,
    501628.31910804246
   ]
  },
  "max_20m": {
   "gradient_pct": 29.193748383857212,
   "start_distance_m": 845.0,
   "end_distance_m": 865.0,
   "midpoint_distance_m": 855.0,
   "start_elevation_m": 256.6360449854617,
   "end_elevation_m": 262.47479466223314,
   "start_xy": [
    323900.749172559,
    501624.79291156837
   ],
   "end_xy": [
    323881.75026355265,
    501630.5842302449
   ]
  },
  "max_25m": {
   "gradient_pct": 28.241606739292138,
   "start_distance_m": 841.0,
   "end_distance_m": 866.0,
   "midpoint_distance_m": 853.5,
   "start_elevation_m": 255.64061483567377,
   "end_elevation_m": 262.7010165204968,
   "start_xy": [
    323903.77783420717,
    501622.2199205918
   ],
   "end_xy": [
    323880.87355347176,
    501631.06524940673
   ]
  },
  "max_50m": {
   "gradient_pct": 23.473785237406847,
   "start_distance_m": 824.0,
   "end_distance_m": 874.0,
   "midpoint_distance_m": 849.0,
   "start_elevation_m": 252.3731189569984,
   "end_elevation_m": 264.11001157570183,
   "start_xy": [
    323918.6079943762,
    501615.20817526866
   ],
   "end_xy": [
    323873.2852031131,
    501632.9751416022
   ]
  },
  "max_100m": {
   "gradient_pct": 14.590245539573202,
   "start_distance_m": 792.0,
   "end_distance_m": 892.0,
   "midpoint_distance_m": 842.0,
   "start_elevation_m": 250.70162827382072,
   "end_elevation_m": 265.2918738133939,
   "start_xy": [
    323946.0607179972,
    501630.28286409384
   ],
   "end_xy": [
    323857.3296157041,
    501625.8938363765
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -59.88923365849132,
   "start_distance_m": 900.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 902.5,
   "start_elevation_m": 265.5676860890061,
   "end_elevation_m": 262.5732244060815,
   "start_xy": [
    323851.5139130325,
    501620.511067742
   ],
   "end_xy": [
    323848.95828939305,
    501616.21353498317
   ]
  },
  "min_10m": {
   "gradient_pct": -28.069941499617244,
   "start_distance_m": 895.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 900.0,
   "start_elevation_m": 265.38021855604325,
   "end_elevation_m": 262.5732244060815,
   "start_xy": [
    323854.99920488923,
    501624.00460758305
   ],
   "end_xy": [
    323848.95828939305,
    501616.21353498317
   ]
  },
  "min_20m": {
   "gradient_pct": -10.30112968391279,
   "start_distance_m": 885.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 895.0,
   "start_elevation_m": 264.6334503428641,
   "end_elevation_m": 262.5732244060815,
   "start_xy": [
    323862.94927238836,
    501630.02312142967
   ],
   "end_xy": [
    323848.95828939305,
    501616.21353498317
   ]
  },
  "min_25m": {
   "gradient_pct": -7.051470377258511,
   "start_distance_m": 880.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 892.5,
   "start_elevation_m": 264.33609200039615,
   "end_elevation_m": 262.5732244060815,
   "start_xy": [
    323867.39519665024,
    501632.31086211815
   ],
   "end_xy": [
    323848.95828939305,
    501616.21353498317
   ]
  },
  "min_50m": {
   "gradient_pct": -2.922418680097337,
   "start_distance_m": 739.0,
   "end_distance_m": 789.0,
   "midpoint_distance_m": 764.0,
   "start_elevation_m": 252.17241542840827,
   "end_elevation_m": 250.7112060883596,
   "start_xy": [
    323985.60223189276,
    501665.2344610001
   ],
   "end_xy": [
    323948.25866582,
    501632.324683226
   ]
  },
  "min_100m": {
   "gradient_pct": -1.2870757172593983,
   "start_distance_m": 699.0,
   "end_distance_m": 799.0,
   "midpoint_distance_m": 749.0,
   "start_elevation_m": 252.1503811174712,
   "end_elevation_m": 250.8633054002118,
   "start_xy": [
    324023.65444686176,
    501675.08735933475
   ],
   "end_xy": [
    323940.9321730774,
    501625.5186194522
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.10777926767048,
   "start_distance_m": 854.0,
   "end_distance_m": 856.0,
   "midpoint_distance_m": 855.0,
   "start_elevation_m": 259.28684068253983,
   "end_elevation_m": 259.98899626789324,
   "start_xy": [
    323892.341016877,
    501627.7119693404
   ],
   "end_xy": [
    323890.3824025599,
    501628.1167284751
   ]
  },
  "max_3m": {
   "gradient_pct": 34.46501138956819,
   "start_distance_m": 853.0,
   "end_distance_m": 856.0,
   "midpoint_distance_m": 854.5,
   "start_elevation_m": 258.9550459262062,
   "end_elevation_m": 259.98899626789324,
   "start_xy": [
    323893.3203240355,
    501627.5095897731
   ],
   "end_xy": [
    323890.3824025599,
    501628.1167284751
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.005,
   "obstruction_max_height_m": 3.46,
   "flagged_windows_m": [
    2,
    3,
    5
   ]
  },
  "structure_suppression": {
   "masked_fraction": 0.02,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    893.0,
    910.0
   ]
  ],
  "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/NY2000.tif"
  ],
  "calculated_at": "2026-08-19T17:27:05+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-12.osm.pbf",
  "osm_snapshot": "2026-08-12T20:21:46Z",
  "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": [
   "NY2000.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Deliberate west-side build after the accidental fragment was pulled (2026-08-19). max25 28.24%, road-audit ok."
 },
 "area": {
  "place": "Cockley Beck",
  "county": "Cumberland"
 }
}