{
 "ocl_version": "0.1.0",
 "name": "Mill Bank",
 "slug": "mill-bank-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.84596699940771,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 85.0,
   "end_distance_m": 87.0,
   "start_elevation_m": 13.99478072244306,
   "end_elevation_m": 14.871700062431215,
   "min_gradient_pct": -19.112478956551726,
   "suppressed_max_gradient_pct": 64.56719934718276,
   "suppressed_location_m": [
    225.0,
    227.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.79670926030304,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 237.0,
   "end_distance_m": 240.0,
   "start_elevation_m": 32.410370395929846,
   "end_elevation_m": 33.45427167373894,
   "min_gradient_pct": -17.77305694811986,
   "suppressed_max_gradient_pct": 61.324778329972084,
   "suppressed_location_m": [
    224.0,
    227.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.65915391619353,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 266.0,
   "start_elevation_m": 36.02144573281952,
   "end_elevation_m": 37.4544034286292,
   "min_gradient_pct": -10.076808074410337,
   "suppressed_max_gradient_pct": 50.80711732959813,
   "suppressed_location_m": [
    222.0,
    227.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.814982438300692,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 36.0,
   "end_distance_m": 46.0,
   "start_elevation_m": 4.119727260076895,
   "end_elevation_m": 6.401225503906964,
   "min_gradient_pct": 0.8025864823154194,
   "suppressed_max_gradient_pct": 34.19244779394937,
   "suppressed_location_m": [
    217.0,
    227.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.544024503811038,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 36.0,
   "end_distance_m": 56.0,
   "start_elevation_m": 4.119727260076895,
   "end_elevation_m": 8.428532160839103,
   "min_gradient_pct": 1.7286777913085771,
   "suppressed_max_gradient_pct": 22.44684890965697,
   "suppressed_location_m": [
    212.0,
    232.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.229140569987386,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 36.0,
   "end_distance_m": 61.0,
   "start_elevation_m": 4.119727260076895,
   "end_elevation_m": 9.427012402573741,
   "min_gradient_pct": 1.8811963769351507
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.005706177584763,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 37.0,
   "end_distance_m": 87.0,
   "start_elevation_m": 4.368846973638832,
   "end_elevation_m": 14.871700062431215,
   "min_gradient_pct": 2.2718618719869426
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.671370823424958,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 237.0,
   "end_distance_m": 337.0,
   "start_elevation_m": 32.410370395929846,
   "end_elevation_m": 44.081741219354804,
   "min_gradient_pct": 2.705459249962928,
   "suppressed_max_gradient_pct": 17.78804919424678,
   "suppressed_location_m": [
    23.0,
    123.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.402,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 78.0,
  "shape_class": "sustained"
 },
 "length_m": 459.4216203003323,
 "start_elevation_m": 1.038256362211519,
 "end_elevation_m": 48.02971429759985,
 "endpoint_gain_m": 46.99145793538833,
 "overall_gradient_pct": 10.228394977291048,
 "accumulated_ascent_m": 48.224672868564824,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.65915391619353,
   "start_distance_m": 261.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 263.5,
   "start_elevation_m": 36.02144573281952,
   "end_elevation_m": 37.4544034286292,
   "start_xy": [
    495316.94263989665,
    503902.5953214738
   ],
   "end_xy": [
    495316.30080493336,
    503897.64211435034
   ]
  },
  "max_10m": {
   "gradient_pct": 22.814982438300692,
   "start_distance_m": 36.0,
   "end_distance_m": 46.0,
   "midpoint_distance_m": 41.0,
   "start_elevation_m": 4.119727260076895,
   "end_elevation_m": 6.401225503906964,
   "start_xy": [
    495490.8469191245,
    504033.9842305329
   ],
   "end_xy": [
    495481.08527516964,
    504031.8493185815
   ]
  },
  "max_20m": {
   "gradient_pct": 21.544024503811038,
   "start_distance_m": 36.0,
   "end_distance_m": 56.0,
   "midpoint_distance_m": 46.0,
   "start_elevation_m": 4.119727260076895,
   "end_elevation_m": 8.428532160839103,
   "start_xy": [
    495490.8469191245,
    504033.9842305329
   ],
   "end_xy": [
    495471.30127852346,
    504029.8066972744
   ]
  },
  "max_25m": {
   "gradient_pct": 21.229140569987386,
   "start_distance_m": 36.0,
   "end_distance_m": 61.0,
   "midpoint_distance_m": 48.5,
   "start_elevation_m": 4.119727260076895,
   "end_elevation_m": 9.427012402573741,
   "start_xy": [
    495490.8469191245,
    504033.9842305329
   ],
   "end_xy": [
    495466.8086524182,
    504027.61208781524
   ]
  },
  "max_50m": {
   "gradient_pct": 21.005706177584763,
   "start_distance_m": 37.0,
   "end_distance_m": 87.0,
   "midpoint_distance_m": 62.0,
   "start_elevation_m": 4.368846973638832,
   "end_elevation_m": 14.871700062431215,
   "start_xy": [
    495489.90017266356,
    504033.6622505044
   ],
   "end_xy": [
    495445.799025556,
    504012.324942646
   ]
  },
  "max_100m": {
   "gradient_pct": 11.671370823424958,
   "start_distance_m": 237.0,
   "end_distance_m": 337.0,
   "midpoint_distance_m": 287.0,
   "start_elevation_m": 32.410370395929846,
   "end_elevation_m": 44.081741219354804,
   "start_xy": [
    495328.2243078837,
    503922.63898855716
   ],
   "end_xy": [
    495301.7435622575,
    503830.5596290558
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.076808074410337,
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 234.5,
   "start_elevation_m": 32.91421079965036,
   "end_elevation_m": 32.410370395929846,
   "start_xy": [
    495331.39683944295,
    503926.4883563675
   ],
   "end_xy": [
    495328.2243078837,
    503922.63898855716
   ]
  },
  "min_10m": {
   "gradient_pct": 0.8025864823154194,
   "start_distance_m": 351.0,
   "end_distance_m": 361.0,
   "midpoint_distance_m": 356.0,
   "start_elevation_m": 44.738132486712814,
   "end_elevation_m": 44.818391134944356,
   "start_xy": [
    495294.3936882293,
    503818.64412018
   ],
   "end_xy": [
    495288.630290541,
    503810.47354487557
   ]
  },
  "min_20m": {
   "gradient_pct": 1.7286777913085771,
   "start_distance_m": 391.0,
   "end_distance_m": 411.0,
   "midpoint_distance_m": 401.0,
   "start_elevation_m": 45.76218560107591,
   "end_elevation_m": 46.10792115933763,
   "start_xy": [
    495272.22006806295,
    503785.3603011255
   ],
   "end_xy": [
    495261.2821009927,
    503768.61665479175
   ]
  },
  "min_25m": {
   "gradient_pct": 1.8811963769351507,
   "start_distance_m": 391.0,
   "end_distance_m": 416.0,
   "midpoint_distance_m": 403.5,
   "start_elevation_m": 45.76218560107591,
   "end_elevation_m": 46.2324846953097,
   "start_xy": [
    495272.22006806295,
    503785.3603011255
   ],
   "end_xy": [
    495258.3822816062,
    503764.54344383156
   ]
  },
  "min_50m": {
   "gradient_pct": 2.2718618719869426,
   "start_distance_m": 379.0,
   "end_distance_m": 429.0,
   "midpoint_distance_m": 404.0,
   "start_elevation_m": 45.386877071036224,
   "end_elevation_m": 46.522808007029695,
   "start_xy": [
    495278.7759205785,
    503795.4112114223
   ],
   "end_xy": [
    495250.8427512015,
    503753.95309533516
   ]
  },
  "min_100m": {
   "gradient_pct": 2.705459249962928,
   "start_distance_m": 339.0,
   "end_distance_m": 439.0,
   "midpoint_distance_m": 389.0,
   "start_elevation_m": 44.207082638310865,
   "end_elevation_m": 46.91254188827379,
   "start_xy": [
    495300.6935802535,
    503828.8574135021
   ],
   "end_xy": [
    495244.89702980674,
    503745.91960210435
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.84596699940771,
   "start_distance_m": 85.0,
   "end_distance_m": 87.0,
   "midpoint_distance_m": 86.0,
   "start_elevation_m": 13.99478072244306,
   "end_elevation_m": 14.871700062431215,
   "start_xy": [
    495447.40206141485,
    504013.51958263945
   ],
   "end_xy": [
    495445.799025556,
    504012.324942646
   ]
  },
  "max_3m": {
   "gradient_pct": 34.79670926030304,
   "start_distance_m": 237.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 238.5,
   "start_elevation_m": 32.410370395929846,
   "end_elevation_m": 33.45427167373894,
   "start_xy": [
    495328.2243078837,
    503922.63898855716
   ],
   "end_xy": [
    495325.94941222155,
    503920.6832662542
   ]
  }
 },
 "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": 0.015,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.213,
   "windows_resited": [
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.36,
   "obstruction_max_height_m": 18.3,
   "flagged_windows_m": [
    2,
    3,
    5,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    90.0,
    180.0
   ],
   [
    223.0,
    229.0
   ]
  ],
  "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/bulk_dtm_1m/NZ9500.tif"
  ],
  "calculated_at": "2026-09-04T04:19:10+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-27.osm.pbf",
  "osm_snapshot": "2026-08-26T20:22:15Z",
  "run_id": "ukbench-260904",
  "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": [
   "NZ9500.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Boggle Hole",
  "county": "North Yorkshire"
 }
}