{
 "ocl_version": "0.1.0",
 "name": "Wapentake Lane",
 "slug": "wapentake-lane",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.346546173864454,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 574.0,
   "end_distance_m": 576.0,
   "start_elevation_m": 189.21751407063786,
   "end_elevation_m": 189.84444499411515,
   "min_gradient_pct": -6.693828831176063
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.171638938746963,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 574.0,
   "end_distance_m": 577.0,
   "start_elevation_m": 189.21751407063786,
   "end_elevation_m": 190.09266323880027,
   "min_gradient_pct": -3.667072649327944
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.535540808554742,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 574.0,
   "end_distance_m": 579.0,
   "start_elevation_m": 189.21751407063786,
   "end_elevation_m": 190.6442911110656,
   "min_gradient_pct": -0.4552497010405432
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.471962430073063,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 569.0,
   "end_distance_m": 579.0,
   "start_elevation_m": 188.0970948680583,
   "end_elevation_m": 190.6442911110656,
   "min_gradient_pct": 5.104680752170054
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.312303942915065,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 559.0,
   "end_distance_m": 579.0,
   "start_elevation_m": 186.38183032248259,
   "end_elevation_m": 190.6442911110656,
   "min_gradient_pct": 5.8854358419898745
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.498127412918734,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 556.0,
   "end_distance_m": 581.0,
   "start_elevation_m": 185.73126219558006,
   "end_elevation_m": 191.10579404880974,
   "min_gradient_pct": 6.2667825596354305
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.432417952484684,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 551.0,
   "end_distance_m": 601.0,
   "start_elevation_m": 184.96252098655523,
   "end_elevation_m": 193.17872996279758,
   "min_gradient_pct": 7.190351980794162
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.545347334216304,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 484.0,
   "end_distance_m": 584.0,
   "start_elevation_m": 177.93413609915925,
   "end_elevation_m": 191.47948343337555,
   "min_gradient_pct": 7.6359876758930625
  }
 ],
 "shape": {
  "ascent_concentration": 0.321,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 131.0,
  "shape_class": "sustained"
 },
 "length_m": 626.2311730689152,
 "start_elevation_m": 128.4159756903683,
 "end_elevation_m": 195.5168478034609,
 "endpoint_gain_m": 67.1008721130926,
 "overall_gradient_pct": 10.715032243485638,
 "accumulated_ascent_m": 67.2754786581227,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.535540808554742,
   "start_distance_m": 574.0,
   "end_distance_m": 579.0,
   "midpoint_distance_m": 576.5,
   "start_elevation_m": 189.21751407063786,
   "end_elevation_m": 190.6442911110656,
   "start_xy": [
    427256.13835593214,
    350772.95271896373
   ],
   "end_xy": [
    427251.564080988,
    350770.9409015683
   ]
  },
  "max_10m": {
   "gradient_pct": 25.471962430073063,
   "start_distance_m": 569.0,
   "end_distance_m": 579.0,
   "midpoint_distance_m": 574.0,
   "start_elevation_m": 188.0970948680583,
   "end_elevation_m": 190.6442911110656,
   "start_xy": [
    427260.8153539826,
    350774.7206808513
   ],
   "end_xy": [
    427251.564080988,
    350770.9409015683
   ]
  },
  "max_20m": {
   "gradient_pct": 21.312303942915065,
   "start_distance_m": 559.0,
   "end_distance_m": 579.0,
   "midpoint_distance_m": 569.0,
   "start_elevation_m": 186.38183032248259,
   "end_elevation_m": 190.6442911110656,
   "start_xy": [
    427270.16935008357,
    350778.25660462637
   ],
   "end_xy": [
    427251.564080988,
    350770.9409015683
   ]
  },
  "max_25m": {
   "gradient_pct": 21.498127412918734,
   "start_distance_m": 556.0,
   "end_distance_m": 581.0,
   "midpoint_distance_m": 568.5,
   "start_elevation_m": 185.73126219558006,
   "end_elevation_m": 191.10579404880974,
   "start_xy": [
    427272.9755489138,
    350779.31738175894
   ],
   "end_xy": [
    427249.75115440215,
    350770.0963323322
   ]
  },
  "max_50m": {
   "gradient_pct": 16.432417952484684,
   "start_distance_m": 551.0,
   "end_distance_m": 601.0,
   "midpoint_distance_m": 576.0,
   "start_elevation_m": 184.96252098655523,
   "end_elevation_m": 193.17872996279758,
   "start_xy": [
    427277.6525469643,
    350781.08534364647
   ],
   "end_xy": [
    427231.6218885441,
    350761.65063997166
   ]
  },
  "max_100m": {
   "gradient_pct": 13.545347334216304,
   "start_distance_m": 484.0,
   "end_distance_m": 584.0,
   "midpoint_distance_m": 534.0,
   "start_elevation_m": 177.93413609915925,
   "end_elevation_m": 191.47948343337555,
   "start_xy": [
    427332.3456526359,
    350817.17541701946
   ],
   "end_xy": [
    427247.0317645235,
    350768.8294784781
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.4552497010405432,
   "start_distance_m": 601.0,
   "end_distance_m": 606.0,
   "midpoint_distance_m": 603.5,
   "start_elevation_m": 193.17872996279758,
   "end_elevation_m": 193.15596747774555,
   "start_xy": [
    427231.6218885441,
    350761.65063997166
   ],
   "end_xy": [
    427227.0895720796,
    350759.53921688156
   ]
  },
  "min_10m": {
   "gradient_pct": 5.104680752170054,
   "start_distance_m": 601.0,
   "end_distance_m": 611.0,
   "midpoint_distance_m": 606.0,
   "start_elevation_m": 193.17872996279758,
   "end_elevation_m": 193.68919803801458,
   "start_xy": [
    427231.6218885441,
    350761.65063997166
   ],
   "end_xy": [
    427222.55725561513,
    350757.42779379146
   ]
  },
  "min_20m": {
   "gradient_pct": 5.8854358419898745,
   "start_distance_m": 24.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 34.0,
   "start_elevation_m": 130.8622343082162,
   "end_elevation_m": 132.03932147661416,
   "start_xy": [
    427606.19875153434,
    351175.9173869833
   ],
   "end_xy": [
    427589.95072823483,
    351164.3774856301
   ]
  },
  "min_25m": {
   "gradient_pct": 6.2667825596354305,
   "start_distance_m": 24.0,
   "end_distance_m": 49.0,
   "midpoint_distance_m": 36.5,
   "start_elevation_m": 130.8622343082162,
   "end_elevation_m": 132.42892994812505,
   "start_xy": [
    427606.19875153434,
    351175.9173869833
   ],
   "end_xy": [
    427586.1301810529,
    351161.1520524451
   ]
  },
  "min_50m": {
   "gradient_pct": 7.190351980794162,
   "start_distance_m": 90.0,
   "end_distance_m": 140.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 135.9992472998266,
   "end_elevation_m": 139.5944232902237,
   "start_xy": [
    427554.8016941613,
    351134.7035003282
   ],
   "end_xy": [
    427517.08991594246,
    351101.88140735234
   ]
  },
  "min_100m": {
   "gradient_pct": 7.6359876758930625,
   "start_distance_m": 85.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 135.0,
   "start_elevation_m": 135.57126664095708,
   "end_elevation_m": 143.20725431685014,
   "start_xy": [
    427558.6222413432,
    351137.9289335132
   ],
   "end_xy": [
    427483.56900960405,
    351071.8589353965
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.346546173864454,
   "start_distance_m": 574.0,
   "end_distance_m": 576.0,
   "midpoint_distance_m": 575.0,
   "start_elevation_m": 189.21751407063786,
   "end_elevation_m": 189.84444499411515,
   "start_xy": [
    427256.13835593214,
    350772.95271896373
   ],
   "end_xy": [
    427254.2834708667,
    350772.20775542234
   ]
  },
  "max_3m": {
   "gradient_pct": 29.171638938746963,
   "start_distance_m": 574.0,
   "end_distance_m": 577.0,
   "midpoint_distance_m": 575.5,
   "start_elevation_m": 189.21751407063786,
   "end_elevation_m": 190.09266323880027,
   "start_xy": [
    427256.13835593214,
    350772.95271896373
   ],
   "end_xy": [
    427253.3770075738,
    350771.7854708043
   ]
  }
 },
 "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": 0.049,
   "obstruction_max_height_m": 9.9,
   "flagged_windows_m": []
  },
  "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/SK2550.tif"
  ],
  "calculated_at": "2026-09-05T01:36:08+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/mnt/HC_Volume_106794610/hunt-gb/regions/region-01.osm.pbf",
  "osm_snapshot": "",
  "run_id": "hunt-england-260905",
  "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": [
   "SK2550.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Millers Green",
  "county": "Derbyshire"
 }
}