{
 "ocl_version": "0.1.0",
 "name": "Hall Ing Road",
 "slug": "hall-ing-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 44.536253715629925,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 915.0,
   "end_distance_m": 917.0,
   "start_elevation_m": 206.22524044578316,
   "end_elevation_m": 207.11596552009576,
   "min_gradient_pct": -19.31399556697926
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 41.80187471713831,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 914.0,
   "end_distance_m": 917.0,
   "start_elevation_m": 205.8619092785816,
   "end_elevation_m": 207.11596552009576,
   "min_gradient_pct": -11.685106604367471
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.279836114332056,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 912.0,
   "end_distance_m": 917.0,
   "start_elevation_m": 205.40197371437915,
   "end_elevation_m": 207.11596552009576,
   "min_gradient_pct": -7.562455376590833
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.322772334512933,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 912.0,
   "end_distance_m": 922.0,
   "start_elevation_m": 205.40197371437915,
   "end_elevation_m": 208.23425094783045,
   "min_gradient_pct": -7.388302521922014
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.109429639942277,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 902.0,
   "end_distance_m": 922.0,
   "start_elevation_m": 203.812365019842,
   "end_elevation_m": 208.23425094783045,
   "min_gradient_pct": -7.31711997724716
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.973581392571987,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 897.0,
   "end_distance_m": 922.0,
   "start_elevation_m": 202.99085559968745,
   "end_elevation_m": 208.23425094783045,
   "min_gradient_pct": -7.227751697306758
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.03058206306474,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 872.0,
   "end_distance_m": 922.0,
   "start_elevation_m": 199.21895991629808,
   "end_elevation_m": 208.23425094783045,
   "min_gradient_pct": -5.678148226523831
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.254478102604992,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 907.0,
   "end_distance_m": 1007.0,
   "start_elevation_m": 204.5544359063581,
   "end_elevation_m": 220.8089140089631,
   "min_gradient_pct": -4.394921787656585
  }
 ],
 "shape": {
  "ascent_concentration": 0.355,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 137.0,
  "shape_class": "sustained"
 },
 "length_m": 1920.657315128199,
 "start_elevation_m": 123.7186424041137,
 "end_elevation_m": 266.946674469969,
 "endpoint_gain_m": 143.22803206585533,
 "overall_gradient_pct": 7.457240338383593,
 "accumulated_ascent_m": 151.03265822995257,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.279836114332056,
   "start_distance_m": 912.0,
   "end_distance_m": 917.0,
   "midpoint_distance_m": 914.5,
   "start_elevation_m": 205.40197371437915,
   "end_elevation_m": 207.11596552009576,
   "start_xy": [
    415346.59482361074,
    411734.5977367997
   ],
   "end_xy": [
    415351.1726211056,
    411732.586825672
   ]
  },
  "max_10m": {
   "gradient_pct": 28.322772334512933,
   "start_distance_m": 912.0,
   "end_distance_m": 922.0,
   "midpoint_distance_m": 917.0,
   "start_elevation_m": 205.40197371437915,
   "end_elevation_m": 208.23425094783045,
   "start_xy": [
    415346.59482361074,
    411734.5977367997
   ],
   "end_xy": [
    415355.75032742246,
    411730.5757071571
   ]
  },
  "max_20m": {
   "gradient_pct": 22.109429639942277,
   "start_distance_m": 902.0,
   "end_distance_m": 922.0,
   "midpoint_distance_m": 912.0,
   "start_elevation_m": 203.812365019842,
   "end_elevation_m": 208.23425094783045,
   "start_xy": [
    415340.7262958037,
    411741.6692887214
   ],
   "end_xy": [
    415355.75032742246,
    411730.5757071571
   ]
  },
  "max_25m": {
   "gradient_pct": 20.973581392571987,
   "start_distance_m": 897.0,
   "end_distance_m": 922.0,
   "midpoint_distance_m": 909.5,
   "start_elevation_m": 202.99085559968745,
   "end_elevation_m": 208.23425094783045,
   "start_xy": [
    415340.3652377951,
    411746.656234976
   ],
   "end_xy": [
    415355.75032742246,
    411730.5757071571
   ]
  },
  "max_50m": {
   "gradient_pct": 18.03058206306474,
   "start_distance_m": 872.0,
   "end_distance_m": 922.0,
   "midpoint_distance_m": 897.0,
   "start_elevation_m": 199.21895991629808,
   "end_elevation_m": 208.23425094783045,
   "start_xy": [
    415329.46096579044,
    411768.08998199727
   ],
   "end_xy": [
    415355.75032742246,
    411730.5757071571
   ]
  },
  "max_100m": {
   "gradient_pct": 16.254478102604992,
   "start_distance_m": 907.0,
   "end_distance_m": 1007.0,
   "midpoint_distance_m": 957.0,
   "start_elevation_m": 204.5544359063581,
   "end_elevation_m": 220.8089140089631,
   "start_xy": [
    415342.4706683868,
    411737.28157720336
   ],
   "end_xy": [
    415428.2003625911,
    411686.2944666313
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.562455376590833,
   "start_distance_m": 1873.0,
   "end_distance_m": 1878.0,
   "midpoint_distance_m": 1875.5,
   "start_elevation_m": 268.8360800564718,
   "end_elevation_m": 268.4579572876423,
   "start_xy": [
    416251.83789476333,
    411474.82163379143
   ],
   "end_xy": [
    416256.8375577001,
    411474.7636288653
   ]
  },
  "min_10m": {
   "gradient_pct": -7.388302521922014,
   "start_distance_m": 1870.0,
   "end_distance_m": 1880.0,
   "midpoint_distance_m": 1875.0,
   "start_elevation_m": 269.0432702561797,
   "end_elevation_m": 268.3044400039875,
   "start_xy": [
    416248.83809926995,
    411474.856633908
   ],
   "end_xy": [
    416258.83742521255,
    411474.74063032266
   ]
  },
  "min_20m": {
   "gradient_pct": -7.31711997724716,
   "start_distance_m": 1858.0,
   "end_distance_m": 1878.0,
   "midpoint_distance_m": 1868.0,
   "start_elevation_m": 269.9213812830917,
   "end_elevation_m": 268.4579572876423,
   "start_xy": [
    416236.8389057889,
    411474.99563367
   ],
   "end_xy": [
    416256.8375577001,
    411474.7636288653
   ]
  },
  "min_25m": {
   "gradient_pct": -7.227751697306758,
   "start_distance_m": 1857.0,
   "end_distance_m": 1882.0,
   "midpoint_distance_m": 1869.5,
   "start_elevation_m": 269.984332584164,
   "end_elevation_m": 268.1773946598373,
   "start_xy": [
    416235.8389753361,
    411475.00742029597
   ],
   "end_xy": [
    416260.8372902495,
    411474.71741651697
   ]
  },
  "min_50m": {
   "gradient_pct": -5.678148226523831,
   "start_distance_m": 1844.0,
   "end_distance_m": 1894.0,
   "midpoint_distance_m": 1869.0,
   "start_elevation_m": 270.4914635179387,
   "end_elevation_m": 267.6523894046768,
   "start_xy": [
    416222.839853743,
    411475.1584097551
   ],
   "end_xy": [
    416272.8364837023,
    411474.57841419557
   ]
  },
  "min_100m": {
   "gradient_pct": -4.394921787656585,
   "start_distance_m": 1793.0,
   "end_distance_m": 1893.0,
   "midpoint_distance_m": 1843.0,
   "start_elevation_m": 272.06650761458667,
   "end_elevation_m": 267.6715858269301,
   "start_xy": [
    416171.84079460934,
    411475.43413682154
   ],
   "end_xy": [
    416271.83654667455,
    411474.5896289866
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 44.536253715629925,
   "start_distance_m": 915.0,
   "end_distance_m": 917.0,
   "midpoint_distance_m": 916.0,
   "start_elevation_m": 206.22524044578316,
   "end_elevation_m": 207.11596552009576,
   "start_xy": [
    415349.3413591513,
    411733.3908651598
   ],
   "end_xy": [
    415351.1726211056,
    411732.586825672
   ]
  },
  "max_3m": {
   "gradient_pct": 41.80187471713831,
   "start_distance_m": 914.0,
   "end_distance_m": 917.0,
   "midpoint_distance_m": 915.5,
   "start_elevation_m": 205.8619092785816,
   "end_elevation_m": 207.11596552009576,
   "start_xy": [
    415348.42568906833,
    411733.79279584554
   ],
   "end_xy": [
    415351.1726211056,
    411732.586825672
   ]
  }
 },
 "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": 0.051,
   "obstruction_max_height_m": 12.76,
   "flagged_windows_m": [
    100
   ]
  },
  "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/SE1010.tif",
   "data/cache/england/bulk_dtm_1m/SE1510.tif"
  ],
  "calculated_at": "2026-08-19T18:35:48+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": [
   "SE1010.tif",
   "SE1510.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 14.8% over 200 m (Terrain 50), gain 82.2 m over 1173 m way. EXTENDED by graph walk: +9 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 3 overlapping proposal(s): discovered-lane-53-6017-1-7715, hall-ing-lane, hall-ing-road-2 ADOPTED (England launch slice 2026-08-16): clean-steep."
 },
 "area": {
  "place": "Honley",
  "county": ""
 }
}