{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.7973, -3.1342)",
 "slug": "discovered-lane-52-7973-3-1342",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.457870389388546,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 804.0,
   "end_distance_m": 806.0,
   "start_elevation_m": 114.81012014739568,
   "end_elevation_m": 115.51927755518345,
   "min_gradient_pct": -28.571418687133132,
   "suppressed_max_gradient_pct": 57.58295040292438,
   "suppressed_location_m": [
    1.0,
    3.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.837381816026305,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 803.0,
   "end_distance_m": 806.0,
   "start_elevation_m": 114.56415610070266,
   "end_elevation_m": 115.51927755518345,
   "min_gradient_pct": -26.968352979324095,
   "suppressed_max_gradient_pct": 52.316786478660994,
   "suppressed_location_m": [
    0.0,
    3.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.007734612417494,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 758.0,
   "end_distance_m": 763.0,
   "start_elevation_m": 107.56179055234529,
   "end_elevation_m": 109.06217728296616,
   "min_gradient_pct": -24.013679828132695,
   "suppressed_max_gradient_pct": 37.32039921491776,
   "suppressed_location_m": [
    681.0,
    686.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.312191906868975,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 753.0,
   "end_distance_m": 763.0,
   "start_elevation_m": 106.53095809227926,
   "end_elevation_m": 109.06217728296616,
   "min_gradient_pct": -23.103416672018398,
   "suppressed_max_gradient_pct": 32.54737504381893,
   "suppressed_location_m": [
    680.0,
    690.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.902317331232396,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 820.0,
   "end_distance_m": 840.0,
   "start_elevation_m": 117.00296440444822,
   "end_elevation_m": 121.1834278706947,
   "min_gradient_pct": -22.81062240593087,
   "suppressed_max_gradient_pct": 25.250314343351405,
   "suppressed_location_m": [
    669.0,
    689.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.253866103526434,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2777.0,
   "end_distance_m": 2802.0,
   "start_elevation_m": 147.41785200490062,
   "end_elevation_m": 152.48131853078223,
   "min_gradient_pct": -22.486454573111814,
   "suppressed_max_gradient_pct": 25.091018652091808,
   "suppressed_location_m": [
    665.0,
    690.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.426702158983403,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 2776.0,
   "end_distance_m": 2826.0,
   "start_elevation_m": 147.2354715380576,
   "end_elevation_m": 156.9488226175493,
   "min_gradient_pct": -21.90079199293569,
   "suppressed_max_gradient_pct": 24.489459522721344,
   "suppressed_location_m": [
    640.0,
    690.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.787989481841066,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2756.0,
   "end_distance_m": 2856.0,
   "start_elevation_m": 143.796329277689,
   "end_elevation_m": 161.58431875953008,
   "min_gradient_pct": -19.11210213856873
  }
 ],
 "shape": {
  "ascent_concentration": 0.483,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 150.0,
  "shape_class": "stepped"
 },
 "length_m": 3140.15948682796,
 "start_elevation_m": 84.02312945573976,
 "end_elevation_m": 183.05429458550915,
 "endpoint_gain_m": 99.03116512976939,
 "overall_gradient_pct": 3.1536985794885846,
 "accumulated_ascent_m": 156.75542120236412,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.007734612417494,
   "start_distance_m": 758.0,
   "end_distance_m": 763.0,
   "midpoint_distance_m": 760.5,
   "start_elevation_m": 107.56179055234529,
   "end_elevation_m": 109.06217728296616,
   "start_xy": [
    323491.25907395774,
    322844.7293246089
   ],
   "end_xy": [
    323486.61593231524,
    322846.5843811744
   ]
  },
  "max_10m": {
   "gradient_pct": 25.312191906868975,
   "start_distance_m": 753.0,
   "end_distance_m": 763.0,
   "midpoint_distance_m": 758.0,
   "start_elevation_m": 106.53095809227926,
   "end_elevation_m": 109.06217728296616,
   "start_xy": [
    323495.9022156003,
    322842.8742680434
   ],
   "end_xy": [
    323486.61593231524,
    322846.5843811744
   ]
  },
  "max_20m": {
   "gradient_pct": 20.902317331232396,
   "start_distance_m": 820.0,
   "end_distance_m": 840.0,
   "midpoint_distance_m": 830.0,
   "start_elevation_m": 117.00296440444822,
   "end_elevation_m": 121.1834278706947,
   "start_xy": [
    323430.39542487357,
    322854.03345365176
   ],
   "end_xy": [
    323411.2920159004,
    322859.954580412
   ]
  },
  "max_25m": {
   "gradient_pct": 20.253866103526434,
   "start_distance_m": 2777.0,
   "end_distance_m": 2802.0,
   "midpoint_distance_m": 2789.5,
   "start_elevation_m": 147.41785200490062,
   "end_elevation_m": 152.48131853078223,
   "start_xy": [
    322003.71971116104,
    322278.12730360293
   ],
   "end_xy": [
    322016.68084885244,
    322256.79771712364
   ]
  },
  "max_50m": {
   "gradient_pct": 19.426702158983403,
   "start_distance_m": 2776.0,
   "end_distance_m": 2826.0,
   "midpoint_distance_m": 2801.0,
   "start_elevation_m": 147.2354715380576,
   "end_elevation_m": 156.9488226175493,
   "start_xy": [
    322003.27759425534,
    322279.0242593168
   ],
   "end_xy": [
    322028.83885593695,
    322236.2894893961
   ]
  },
  "max_100m": {
   "gradient_pct": 17.787989481841066,
   "start_distance_m": 2756.0,
   "end_distance_m": 2856.0,
   "midpoint_distance_m": 2806.0,
   "start_elevation_m": 143.796329277689,
   "end_elevation_m": 161.58431875953008,
   "start_xy": [
    321995.87616685877,
    322297.5423304243
   ],
   "end_xy": [
    322041.69428207434,
    322209.1879379482
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -24.013679828132695,
   "start_distance_m": 2616.0,
   "end_distance_m": 2621.0,
   "midpoint_distance_m": 2618.5,
   "start_elevation_m": 140.91316842464443,
   "end_elevation_m": 139.7124844332378,
   "start_xy": [
    321936.08437218,
    322419.55463804427
   ],
   "end_xy": [
    321935.34607252164,
    322414.8028995524
   ]
  },
  "min_10m": {
   "gradient_pct": -23.103416672018398,
   "start_distance_m": 2614.0,
   "end_distance_m": 2624.0,
   "midpoint_distance_m": 2619.0,
   "start_elevation_m": 141.39084960273328,
   "end_elevation_m": 139.08050793553144,
   "start_xy": [
    321936.87366501184,
    322421.3850712831
   ],
   "end_xy": [
    321936.2220394143,
    322411.9336345224
   ]
  },
  "min_20m": {
   "gradient_pct": -22.81062240593087,
   "start_distance_m": 2601.0,
   "end_distance_m": 2621.0,
   "midpoint_distance_m": 2611.0,
   "start_elevation_m": 144.27460891442396,
   "end_elevation_m": 139.7124844332378,
   "start_xy": [
    321943.95865784446,
    322432.28200839704
   ],
   "end_xy": [
    321935.34607252164,
    322414.8028995524
   ]
  },
  "min_25m": {
   "gradient_pct": -22.486454573111814,
   "start_distance_m": 2599.0,
   "end_distance_m": 2624.0,
   "midpoint_distance_m": 2611.5,
   "start_elevation_m": 144.7021215788094,
   "end_elevation_m": 139.08050793553144,
   "start_xy": [
    321945.06983040314,
    322433.94492607086
   ],
   "end_xy": [
    321936.2220394143,
    322411.9336345224
   ]
  },
  "min_50m": {
   "gradient_pct": -21.90079199293569,
   "start_distance_m": 2581.0,
   "end_distance_m": 2631.0,
   "midpoint_distance_m": 2606.0,
   "start_elevation_m": 148.5447470422415,
   "end_elevation_m": 137.59435104577366,
   "start_xy": [
    321953.17851978063,
    322449.72871609044
   ],
   "end_xy": [
    321940.3299599658,
    322406.3576527222
   ]
  },
  "min_100m": {
   "gradient_pct": -19.11210213856873,
   "start_distance_m": 2546.0,
   "end_distance_m": 2646.0,
   "midpoint_distance_m": 2596.0,
   "start_elevation_m": 154.00641479049654,
   "end_elevation_m": 134.8943126519278,
   "start_xy": [
    321969.73103657423,
    322477.2590856083
   ],
   "end_xy": [
    321951.5040442308,
    322396.44767777104
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.457870389388546,
   "start_distance_m": 804.0,
   "end_distance_m": 806.0,
   "midpoint_distance_m": 805.0,
   "start_elevation_m": 114.81012014739568,
   "end_elevation_m": 115.51927755518345,
   "start_xy": [
    323445.96015991905,
    322850.7457840383
   ],
   "end_xy": [
    323443.96609810216,
    322850.89978881256
   ]
  },
  "max_3m": {
   "gradient_pct": 31.837381816026305,
   "start_distance_m": 803.0,
   "end_distance_m": 806.0,
   "midpoint_distance_m": 804.5,
   "start_elevation_m": 114.56415610070266,
   "end_elevation_m": 115.51927755518345,
   "start_xy": [
    323446.95719082747,
    322850.66878165124
   ],
   "end_xy": [
    323443.96609810216,
    322850.89978881256
   ]
  }
 },
 "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": 0.002,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.011,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.021,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.048,
   "windows_resited": [
    2.0,
    3.0,
    10.0,
    20.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 3,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 665.0,
     "end_m": 690.0,
     "raw_pct": 25.09,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 669.0,
     "end_m": 689.0,
     "raw_pct": 25.25,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 680.0,
     "end_m": 690.0,
     "raw_pct": 32.55,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 681.0,
     "end_m": 686.0,
     "raw_pct": 37.32,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 637.0,
     "end_m": 662.0,
     "raw_pct": 22.48,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 640.0,
     "end_m": 660.0,
     "raw_pct": 24.92,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 771.0,
     "end_m": 791.0,
     "raw_pct": 22.51,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.07,
   "obstruction_max_height_m": 22.92,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    4.0
   ],
   [
    600.0,
    630.0
   ],
   [
    635.0,
    692.0
   ],
   [
    720.0,
    750.0
   ],
   [
    769.0,
    793.0
   ]
  ],
  "review": [],
  "extent": [
   "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/SJ2020.tif"
  ],
  "calculated_at": "2026-09-11T23:35:01+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk04.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-england-260911",
  "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": [
   "SJ2020.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Llanyblodwel",
  "county": "Shropshire"
 }
}