{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (51.9350, -4.3418)",
 "slug": "discovered-lane-51-9350-4-3418",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 42.40718799804881,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 945.0,
   "end_distance_m": 947.0,
   "start_elevation_m": 153.13942803224933,
   "end_elevation_m": 153.9875717922103,
   "min_gradient_pct": -115.94894119414434,
   "suppressed_max_gradient_pct": 123.31063620687672,
   "suppressed_location_m": [
    2532.0,
    2534.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.92609241473682,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 945.0,
   "end_distance_m": 948.0,
   "start_elevation_m": 153.13942803224933,
   "end_elevation_m": 154.18721080469143,
   "min_gradient_pct": -100.65644426305151,
   "suppressed_max_gradient_pct": 127.06522100190654,
   "suppressed_location_m": [
    2532.0,
    2535.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.851640311555684,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_unresolved"
   ],
   "start_distance_m": 943.0,
   "end_distance_m": 948.0,
   "start_elevation_m": 152.99462878911365,
   "end_elevation_m": 154.18721080469143,
   "min_gradient_pct": -84.8398047196298,
   "suppressed_max_gradient_pct": 108.05004639727656,
   "suppressed_location_m": [
    2532.0,
    2537.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.36946441104149,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 516.0,
   "end_distance_m": 526.0,
   "start_elevation_m": 122.5300946640123,
   "end_elevation_m": 124.56704110511645,
   "min_gradient_pct": -61.62181930139553,
   "suppressed_max_gradient_pct": 72.90603366081768,
   "suppressed_location_m": [
    2531.0,
    2541.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.06435914967018,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 418.0,
   "end_distance_m": 438.0,
   "start_elevation_m": 105.62937662956368,
   "end_elevation_m": 109.24224845949772,
   "min_gradient_pct": -41.37785241079847,
   "suppressed_max_gradient_pct": 48.048943799926676,
   "suppressed_location_m": [
    2525.0,
    2545.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.703529532972766,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 412.0,
   "end_distance_m": 437.0,
   "start_elevation_m": 104.67004673551287,
   "end_elevation_m": 109.09592911875606,
   "min_gradient_pct": -35.735275549166374,
   "suppressed_max_gradient_pct": 40.66440058245439,
   "suppressed_location_m": [
    2520.0,
    2545.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.588995338867505,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 388.0,
   "end_distance_m": 438.0,
   "start_elevation_m": 101.44775079006396,
   "end_elevation_m": 109.24224845949772,
   "min_gradient_pct": -23.50890962404864,
   "suppressed_max_gradient_pct": 25.233730699641228,
   "suppressed_location_m": [
    2497.0,
    2547.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.053705597426585,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 338.0,
   "end_distance_m": 438.0,
   "start_elevation_m": 96.18854286207113,
   "end_elevation_m": 109.24224845949772,
   "min_gradient_pct": -15.982395925485093,
   "suppressed_max_gradient_pct": 19.116594478173525,
   "suppressed_location_m": [
    377.0,
    477.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.483,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 131.0,
  "shape_class": "stepped"
 },
 "length_m": 3080.9620711593834,
 "start_elevation_m": 92.22310874063065,
 "end_elevation_m": 157.47658001144427,
 "endpoint_gain_m": 65.25347127081362,
 "overall_gradient_pct": 2.117957630236531,
 "accumulated_ascent_m": 173.11116764309122,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.851640311555684,
   "start_distance_m": 943.0,
   "end_distance_m": 948.0,
   "midpoint_distance_m": 945.5,
   "start_elevation_m": 152.99462878911365,
   "end_elevation_m": 154.18721080469143,
   "start_xy": [
    238124.08644156944,
    228584.42518385273
   ],
   "end_xy": [
    238128.99692196675,
    228583.48328385773
   ]
  },
  "max_10m": {
   "gradient_pct": 20.36946441104149,
   "start_distance_m": 516.0,
   "end_distance_m": 526.0,
   "midpoint_distance_m": 521.0,
   "start_elevation_m": 122.5300946640123,
   "end_elevation_m": 124.56704110511645,
   "start_xy": [
    237737.48385802953,
    228757.88018733126
   ],
   "end_xy": [
    237746.81999473317,
    228754.2973767511
   ]
  },
  "max_20m": {
   "gradient_pct": 18.06435914967018,
   "start_distance_m": 418.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 428.0,
   "start_elevation_m": 105.62937662956368,
   "end_elevation_m": 109.24224845949772,
   "start_xy": [
    237645.92843902216,
    228739.42082780506
   ],
   "end_xy": [
    237664.61012575062,
    228746.5618756884
   ]
  },
  "max_25m": {
   "gradient_pct": 17.703529532972766,
   "start_distance_m": 412.0,
   "end_distance_m": 437.0,
   "midpoint_distance_m": 424.5,
   "start_elevation_m": 104.67004673551287,
   "end_elevation_m": 109.09592911875606,
   "start_xy": [
    237640.323836796,
    228737.27876524214
   ],
   "end_xy": [
    237663.6760346723,
    228746.2048408758
   ]
  },
  "max_50m": {
   "gradient_pct": 15.588995338867505,
   "start_distance_m": 388.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 413.0,
   "start_elevation_m": 101.44775079006396,
   "end_elevation_m": 109.24224845949772,
   "start_xy": [
    237620.73027025705,
    228743.05690818047
   ],
   "end_xy": [
    237664.61012575062,
    228746.5618756884
   ]
  },
  "max_100m": {
   "gradient_pct": 13.053705597426585,
   "start_distance_m": 338.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 388.0,
   "start_elevation_m": 96.18854286207113,
   "end_elevation_m": 109.24224845949772,
   "start_xy": [
    237584.5253984393,
    228777.5417860178
   ],
   "end_xy": [
    237664.61012575062,
    228746.5618756884
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -84.8398047196298,
   "start_distance_m": 302.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 304.5,
   "start_elevation_m": 101.95194743736893,
   "end_elevation_m": 97.70995720138744,
   "start_xy": [
    237552.50350761964,
    228791.82975778353
   ],
   "end_xy": [
    237557.33125555504,
    228790.52866352347
   ]
  },
  "min_10m": {
   "gradient_pct": -61.62181930139553,
   "start_distance_m": 2384.0,
   "end_distance_m": 2394.0,
   "midpoint_distance_m": 2389.0,
   "start_elevation_m": 121.06418347277747,
   "end_elevation_m": 114.90200154263792,
   "start_xy": [
    239380.78401151163,
    229084.46568503993
   ],
   "end_xy": [
    239389.022936552,
    229078.79822562082
   ]
  },
  "min_20m": {
   "gradient_pct": -41.37785241079847,
   "start_distance_m": 2377.0,
   "end_distance_m": 2397.0,
   "midpoint_distance_m": 2387.0,
   "start_elevation_m": 122.6220742375804,
   "end_elevation_m": 114.34650375542071,
   "start_xy": [
    239375.01641868168,
    229088.43240486344
   ],
   "end_xy": [
    239391.49427902946,
    229077.0975009591
   ]
  },
  "min_25m": {
   "gradient_pct": -35.735275549166374,
   "start_distance_m": 2374.0,
   "end_distance_m": 2399.0,
   "midpoint_distance_m": 2386.5,
   "start_elevation_m": 123.03229730137674,
   "end_elevation_m": 114.09847841408515,
   "start_xy": [
    239372.54484759728,
    229090.1327978305
   ],
   "end_xy": [
    239393.14236271425,
    229075.964443375
   ]
  },
  "min_50m": {
   "gradient_pct": -23.50890962404864,
   "start_distance_m": 2374.0,
   "end_distance_m": 2424.0,
   "midpoint_distance_m": 2399.0,
   "start_elevation_m": 123.03229730137674,
   "end_elevation_m": 111.27784248935242,
   "start_xy": [
    239372.54484759728,
    229090.1327978305
   ],
   "end_xy": [
    239413.73980386535,
    229061.79598057378
   ]
  },
  "min_100m": {
   "gradient_pct": -15.982395925485093,
   "start_distance_m": 2337.0,
   "end_distance_m": 2437.0,
   "midpoint_distance_m": 2387.0,
   "start_elevation_m": 126.3510396241638,
   "end_elevation_m": 110.36864369867871,
   "start_xy": [
    239342.73733445606,
    229091.65022084612
   ],
   "end_xy": [
    239425.16731295583,
    229065.3864860781
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 42.40718799804881,
   "start_distance_m": 945.0,
   "end_distance_m": 947.0,
   "midpoint_distance_m": 946.0,
   "start_elevation_m": 153.13942803224933,
   "end_elevation_m": 153.9875717922103,
   "start_xy": [
    238126.05058249703,
    228584.04815672917
   ],
   "end_xy": [
    238128.01480565855,
    228583.67155859084
   ]
  },
  "max_3m": {
   "gradient_pct": 34.92609241473682,
   "start_distance_m": 945.0,
   "end_distance_m": 948.0,
   "midpoint_distance_m": 946.5,
   "start_elevation_m": 153.13942803224933,
   "end_elevation_m": 154.18721080469143,
   "start_xy": [
    238126.05058249703,
    228584.04815672917
   ],
   "end_xy": [
    238128.99692196675,
    228583.48328385773
   ]
  }
 },
 "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": 0.056,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.06,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.099,
   "windows_resited": [
    5.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 4,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 441.0,
     "end_m": 466.0,
     "raw_pct": 30.06,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 446.0,
     "end_m": 466.0,
     "raw_pct": 31.51,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 446.0,
     "end_m": 456.0,
     "raw_pct": 33.29,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 2539.0,
     "end_m": 2544.0,
     "raw_pct": 42.87,
     "reason": "hump+mask-edge"
    },
    {
     "window_m": 25.0,
     "start_m": 2676.0,
     "end_m": 2701.0,
     "raw_pct": 22.13,
     "reason": "staircase"
    },
    {
     "window_m": 20.0,
     "start_m": 732.0,
     "end_m": 752.0,
     "raw_pct": 22.13,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 2680.0,
     "end_m": 2685.0,
     "raw_pct": 35.78,
     "reason": "short-step"
    },
    {
     "window_m": 10.0,
     "start_m": 137.0,
     "end_m": 147.0,
     "raw_pct": 25.53,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 624.0,
     "end_m": 629.0,
     "raw_pct": 24.69,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": [
    {
     "window_m": 5.0,
     "start_m": 943.0,
     "end_m": 948.0,
     "pct": 23.85,
     "reason": "short-step"
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.212,
   "obstruction_max_height_m": 21.61,
   "flagged_windows_m": [
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    113.0,
    118.0
   ],
   [
    135.0,
    149.0
   ],
   [
    168.0,
    173.0
   ],
   [
    186.0,
    191.0
   ],
   [
    215.0,
    220.0
   ],
   [
    301.0,
    309.0
   ],
   [
    439.0,
    468.0
   ],
   [
    622.0,
    631.0
   ],
   [
    646.0,
    651.0
   ],
   [
    730.0,
    754.0
   ],
   [
    2274.0,
    2279.0
   ],
   [
    2344.0,
    2380.0
   ],
   [
    2383.0,
    2471.0
   ],
   [
    2530.0,
    2546.0
   ],
   [
    2657.0,
    2662.0
   ],
   [
    2674.0,
    2703.0
   ]
  ],
  "review": [
   "texture_unresolved"
  ],
  "extent": [
   "descends_at_start"
  ]
 },
 "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/wales/dtm_1m/wg_del_24_237228_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_237229_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_238228_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_238229_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_239228_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_239229_20220120dtm.tif"
  ],
  "calculated_at": "2026-09-12T00:09:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-wales/batch-england-rchunk01.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-wales-260911",
  "elevation_provider": "Welsh Government",
  "elevation_dataset": "Welsh Government LiDAR 1m DTM (2020-2023)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Crown copyright Welsh Government",
  "elevation_catalogue_layer": "geonode:welsh_government_lidar_tile_catalogue_2020_2023",
  "elevation_tile_ids": [
   "wg_del_24_237228_20220120dtm.tif",
   "wg_del_24_237229_20220120dtm.tif",
   "wg_del_24_238228_20220120dtm.tif",
   "wg_del_24_238229_20220120dtm.tif",
   "wg_del_24_239228_20220120dtm.tif",
   "wg_del_24_239229_20220120dtm.tif"
  ],
  "elevation_capture_dates": [
   "20-01-2022"
  ],
  "climb_origin": "discovered",
  "mask_basin_extension_m": 38.0,
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Cynwyl Elfed",
  "county": "Sir Gaerfyrddin - Carmarthenshire"
 }
}