{
 "ocl_version": "0.1.0",
 "name": "The Burway",
 "slug": "the-burway",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.15090799797247,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 3021.0,
   "end_distance_m": 3023.0,
   "start_elevation_m": 478.91969937130335,
   "end_elevation_m": 479.5827175312628,
   "min_gradient_pct": -25.95557910251216
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.70448721609758,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 300.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 240.3695707799472,
   "end_elevation_m": 241.20070539643012,
   "min_gradient_pct": -24.090138339615425
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.914990039731947,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1246.0,
   "end_distance_m": 1251.0,
   "start_elevation_m": 372.5689894104588,
   "end_elevation_m": 373.7647389124454,
   "min_gradient_pct": -18.192284497933997
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 19.62912853885541,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1242.0,
   "end_distance_m": 1252.0,
   "start_elevation_m": 371.9379640537136,
   "end_elevation_m": 373.9008769075991,
   "min_gradient_pct": -11.606331942254542
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.027913829328895,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 449.0,
   "end_distance_m": 469.0,
   "start_elevation_m": 266.5306793865975,
   "end_elevation_m": 270.3362621524633,
   "min_gradient_pct": -9.696476499188691
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.609269538259923,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 434.0,
   "end_distance_m": 459.0,
   "start_elevation_m": 263.8320322516141,
   "end_elevation_m": 268.4843496361791,
   "min_gradient_pct": -9.301678690515928,
   "lateral_min_pct": 18.43,
   "lateral_max_pct": 20.45
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.279138122882955,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 419.0,
   "end_distance_m": 469.0,
   "start_elevation_m": 261.1966930910218,
   "end_elevation_m": 270.3362621524633,
   "min_gradient_pct": -7.720512970091477
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.912568406983894,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 368.0,
   "end_distance_m": 468.0,
   "start_elevation_m": 252.23798241317263,
   "end_elevation_m": 270.1505508201565,
   "min_gradient_pct": -5.827688730461205
  }
 ],
 "shape": {
  "ascent_concentration": 0.412,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 656.0,
  "shape_class": "sustained"
 },
 "length_m": 3130.7303659854547,
 "start_elevation_m": 210.32040497497456,
 "end_elevation_m": 477.52917673797685,
 "endpoint_gain_m": 267.2087717630023,
 "overall_gradient_pct": 8.535029866070674,
 "accumulated_ascent_m": 285.64730878079916,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.914990039731947,
   "start_distance_m": 1246.0,
   "end_distance_m": 1251.0,
   "midpoint_distance_m": 1248.5,
   "start_elevation_m": 372.5689894104588,
   "end_elevation_m": 373.7647389124454,
   "start_xy": [
    344035.605023596,
    294295.1159317907
   ],
   "end_xy": [
    344030.76950846263,
    294293.84470305237
   ]
  },
  "max_10m": {
   "gradient_pct": 19.62912853885541,
   "start_distance_m": 1242.0,
   "end_distance_m": 1252.0,
   "midpoint_distance_m": 1247.0,
   "start_elevation_m": 371.9379640537136,
   "end_elevation_m": 373.9008769075991,
   "start_xy": [
    344039.46845467994,
    294296.1522233809
   ],
   "end_xy": [
    344029.79885609227,
    294293.6042160967
   ]
  },
  "max_20m": {
   "gradient_pct": 19.027913829328895,
   "start_distance_m": 449.0,
   "end_distance_m": 469.0,
   "midpoint_distance_m": 459.0,
   "start_elevation_m": 266.5306793865975,
   "end_elevation_m": 270.3362621524633,
   "start_xy": [
    344775.56714058603,
    294196.5175017735
   ],
   "end_xy": [
    344756.26737110724,
    294201.7476635264
   ]
  },
  "max_25m": {
   "gradient_pct": 18.609269538259923,
   "start_distance_m": 434.0,
   "end_distance_m": 459.0,
   "midpoint_distance_m": 446.5,
   "start_elevation_m": 263.8320322516141,
   "end_elevation_m": 268.4843496361791,
   "start_xy": [
    344789.5992180469,
    294191.21648280235
   ],
   "end_xy": [
    344765.930271033,
    294199.1731023939
   ]
  },
  "max_50m": {
   "gradient_pct": 18.279138122882955,
   "start_distance_m": 419.0,
   "end_distance_m": 469.0,
   "midpoint_distance_m": 444.0,
   "start_elevation_m": 261.1966930910218,
   "end_elevation_m": 270.3362621524633,
   "start_xy": [
    344803.4689421174,
    294185.56006579066
   ],
   "end_xy": [
    344756.26737110724,
    294201.7476635264
   ]
  },
  "max_100m": {
   "gradient_pct": 17.912568406983894,
   "start_distance_m": 368.0,
   "end_distance_m": 468.0,
   "midpoint_distance_m": 418.0,
   "start_elevation_m": 252.23798241317263,
   "end_elevation_m": 270.1505508201565,
   "start_xy": [
    344847.93123306875,
    294160.5915406173
   ],
   "end_xy": [
    344757.2336610998,
    294201.49020741315
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -18.192284497933997,
   "start_distance_m": 3006.0,
   "end_distance_m": 3011.0,
   "midpoint_distance_m": 3008.5,
   "start_elevation_m": 480.19834063628355,
   "end_elevation_m": 479.28872641138685,
   "start_xy": [
    342463.3034897228,
    294537.1396637146
   ],
   "end_xy": [
    342458.4463369852,
    294538.32628382416
   ]
  },
  "min_10m": {
   "gradient_pct": -11.606331942254542,
   "start_distance_m": 3006.0,
   "end_distance_m": 3016.0,
   "midpoint_distance_m": 3011.0,
   "start_elevation_m": 480.19834063628355,
   "end_elevation_m": 479.0377074420581,
   "start_xy": [
    342463.3034897228,
    294537.1396637146
   ],
   "end_xy": [
    342453.55897869536,
    294539.3741451468
   ]
  },
  "min_20m": {
   "gradient_pct": -9.696476499188691,
   "start_distance_m": 2994.0,
   "end_distance_m": 3014.0,
   "midpoint_distance_m": 3004.0,
   "start_elevation_m": 481.0598917568115,
   "end_elevation_m": 479.1205964569738,
   "start_xy": [
    342474.9102464928,
    294534.1161176294
   ],
   "end_xy": [
    342455.5233376488,
    294538.99825433537
   ]
  },
  "min_25m": {
   "gradient_pct": -9.301678690515928,
   "start_distance_m": 2987.0,
   "end_distance_m": 3012.0,
   "midpoint_distance_m": 2999.5,
   "start_elevation_m": 481.5189569426873,
   "end_elevation_m": 479.1935372700583,
   "start_xy": [
    342481.5563823062,
    294531.91864663997
   ],
   "end_xy": [
    342457.47490643774,
    294538.56360784604
   ]
  },
  "min_50m": {
   "gradient_pct": -7.720512970091477,
   "start_distance_m": 2962.0,
   "end_distance_m": 3012.0,
   "midpoint_distance_m": 2987.0,
   "start_elevation_m": 483.05379375510404,
   "end_elevation_m": 479.1935372700583,
   "start_xy": [
    342505.274813571,
    294524.0257086195
   ],
   "end_xy": [
    342457.47490643774,
    294538.56360784604
   ]
  },
  "min_100m": {
   "gradient_pct": -5.827688730461205,
   "start_distance_m": 2912.0,
   "end_distance_m": 3012.0,
   "midpoint_distance_m": 2962.0,
   "start_elevation_m": 485.0212260005195,
   "end_elevation_m": 479.1935372700583,
   "start_xy": [
    342551.20144654735,
    294504.46520043677
   ],
   "end_xy": [
    342457.47490643774,
    294538.56360784604
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.15090799797247,
   "start_distance_m": 3021.0,
   "end_distance_m": 3023.0,
   "midpoint_distance_m": 3022.0,
   "start_elevation_m": 478.91969937130335,
   "end_elevation_m": 479.5827175312628,
   "start_xy": [
    342448.6480813118,
    294540.3138721754
   ],
   "end_xy": [
    342446.6837223584,
    294540.68976298685
   ]
  },
  "max_3m": {
   "gradient_pct": 27.70448721609758,
   "start_distance_m": 300.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 301.5,
   "start_elevation_m": 240.3695707799472,
   "end_elevation_m": 241.20070539643012,
   "start_xy": [
    344902.68157251074,
    294121.0682081386
   ],
   "end_xy": [
    344900.4059230614,
    294123.0230532946
   ]
  }
 },
 "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": 0.009,
   "obstruction_max_height_m": 18.4,
   "flagged_windows_m": [
    3
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ],
  "lateral_stability": {
   "offsets_m": [
    -1.0,
    -0.5,
    0.0,
    0.5,
    1.0
   ],
   "windows": [
    {
     "window_m": 25,
     "min_pct": 18.43,
     "max_pct": 20.45
    },
    {
     "window_m": 10,
     "min_pct": 19.45,
     "max_pct": 24.94
    },
    {
     "window_m": 5,
     "min_pct": 22.34,
     "max_pct": 32.25
    }
   ]
  }
 },
 "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/SO4090.tif",
   "data/cache/england/bulk_dtm_1m/SO4590.tif"
  ],
  "calculated_at": "2026-08-28T18:55:48+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": "fame-backfill-batch-260828",
  "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": [
   "SO4090.tif",
   "SO4590.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Church Stretton",
  "county": "Shropshire"
 }
}