{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.0249, -4.2999)",
 "slug": "discovered-lane-52-0249-4-2999",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 45.30535182575477,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 59.0,
   "end_distance_m": 61.0,
   "start_elevation_m": 92.96867221198494,
   "end_elevation_m": 93.87477924850003,
   "min_gradient_pct": -52.6924639163596,
   "suppressed_max_gradient_pct": 64.99047578075832,
   "suppressed_location_m": [
    246.0,
    248.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 39.821982710572,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 59.0,
   "end_distance_m": 62.0,
   "start_elevation_m": 92.96867221198494,
   "end_elevation_m": 94.1633316933021,
   "min_gradient_pct": -43.737681044140686,
   "suppressed_max_gradient_pct": 56.14778063607323,
   "suppressed_location_m": [
    245.0,
    248.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 33.789275942174584,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 114.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 101.54627169044201,
   "end_elevation_m": 103.23573548755074,
   "min_gradient_pct": -27.28038694107795,
   "suppressed_max_gradient_pct": 44.59444888815028,
   "suppressed_location_m": [
    243.0,
    248.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.818351822120775,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 109.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 100.45390030533866,
   "end_elevation_m": 103.23573548755074,
   "min_gradient_pct": -16.996589506189252,
   "suppressed_max_gradient_pct": 36.85903255092768,
   "suppressed_location_m": [
    273.0,
    283.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.37746774396804,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 145.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 105.71167364003793,
   "end_elevation_m": 110.18716718883154,
   "min_gradient_pct": -9.747002445689077,
   "suppressed_max_gradient_pct": 30.334771414331954,
   "suppressed_location_m": [
    263.0,
    283.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.786065161615056,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 104.99065089842777,
   "end_elevation_m": 110.18716718883154,
   "min_gradient_pct": -8.13355168258704,
   "suppressed_max_gradient_pct": 28.752997007752302,
   "suppressed_location_m": [
    258.0,
    283.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.22318279277013,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 113.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 101.23988979464383,
   "end_elevation_m": 109.8514811910289,
   "min_gradient_pct": -6.252509300233612,
   "suppressed_max_gradient_pct": 24.229537270576998,
   "suppressed_location_m": [
    236.0,
    286.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 9.557354466408583,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 517.0,
   "end_distance_m": 617.0,
   "start_elevation_m": 152.99490045221899,
   "end_elevation_m": 162.55225491862757,
   "min_gradient_pct": -3.7765388333883436,
   "suppressed_max_gradient_pct": 20.40843152296037,
   "suppressed_location_m": [
    219.0,
    319.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.483,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 51.0,
  "shape_class": "stepped"
 },
 "length_m": 2868.5345689114165,
 "start_elevation_m": 90.05740677928777,
 "end_elevation_m": 236.34823196227563,
 "endpoint_gain_m": 146.29082518298787,
 "overall_gradient_pct": 5.0998452927309135,
 "accumulated_ascent_m": 183.2045084602649,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 33.789275942174584,
   "start_distance_m": 114.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 116.5,
   "start_elevation_m": 101.54627169044201,
   "end_elevation_m": 103.23573548755074,
   "start_xy": [
    242341.67637887,
    238741.79089557528
   ],
   "end_xy": [
    242345.54456017233,
    238738.62274730095
   ]
  },
  "max_10m": {
   "gradient_pct": 27.818351822120775,
   "start_distance_m": 109.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 114.0,
   "start_elevation_m": 100.45390030533866,
   "end_elevation_m": 103.23573548755074,
   "start_xy": [
    242337.80901188066,
    238744.96003812118
   ],
   "end_xy": [
    242345.54456017233,
    238738.62274730095
   ]
  },
  "max_20m": {
   "gradient_pct": 22.37746774396804,
   "start_distance_m": 145.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 155.0,
   "start_elevation_m": 105.71167364003793,
   "end_elevation_m": 110.18716718883154,
   "start_xy": [
    242360.10320717318,
    238718.6172928206
   ],
   "end_xy": [
    242364.54721163094,
    238699.11727324247
   ]
  },
  "max_25m": {
   "gradient_pct": 20.786065161615056,
   "start_distance_m": 140.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 152.5,
   "start_elevation_m": 104.99065089842777,
   "end_elevation_m": 110.18716718883154,
   "start_xy": [
    242358.99220605873,
    238723.49229771513
   ],
   "end_xy": [
    242364.54721163094,
    238699.11727324247
   ]
  },
  "max_50m": {
   "gradient_pct": 17.22318279277013,
   "start_distance_m": 113.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 138.0,
   "start_elevation_m": 101.23988979464383,
   "end_elevation_m": 109.8514811910289,
   "start_xy": [
    242340.90310211785,
    238742.42496411034
   ],
   "end_xy": [
    242364.10319142757,
    238701.06736197355
   ]
  },
  "max_100m": {
   "gradient_pct": 9.557354466408583,
   "start_distance_m": 517.0,
   "end_distance_m": 617.0,
   "midpoint_distance_m": 567.0,
   "start_elevation_m": 152.99490045221899,
   "end_elevation_m": 162.55225491862757,
   "start_xy": [
    242526.4221846243,
    238404.67675991505
   ],
   "end_xy": [
    242599.59327739614,
    238336.62916594578
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -27.28038694107795,
   "start_distance_m": 2433.0,
   "end_distance_m": 2438.0,
   "midpoint_distance_m": 2435.5,
   "start_elevation_m": 224.9042873353918,
   "end_elevation_m": 223.54026798833792,
   "start_xy": [
    243337.35453499932,
    236753.93385936116
   ],
   "end_xy": [
    243342.28868500795,
    236753.12505847387
   ]
  },
  "min_10m": {
   "gradient_pct": -16.996589506189252,
   "start_distance_m": 2428.0,
   "end_distance_m": 2438.0,
   "midpoint_distance_m": 2433.0,
   "start_elevation_m": 225.23992693895684,
   "end_elevation_m": 223.54026798833792,
   "start_xy": [
    243332.42042066288,
    236754.74287814667
   ],
   "end_xy": [
    243342.28868500795,
    236753.12505847387
   ]
  },
  "min_20m": {
   "gradient_pct": -9.747002445689077,
   "start_distance_m": 2419.0,
   "end_distance_m": 2439.0,
   "midpoint_distance_m": 2429.0,
   "start_elevation_m": 225.47554618519575,
   "end_elevation_m": 223.52614569605794,
   "start_xy": [
    243323.53896702756,
    236756.19882000156
   ],
   "end_xy": [
    243343.27560493213,
    236752.9638478712
   ]
  },
  "min_25m": {
   "gradient_pct": -8.13355168258704,
   "start_distance_m": 2419.0,
   "end_distance_m": 2444.0,
   "midpoint_distance_m": 2431.5,
   "start_elevation_m": 225.47554618519575,
   "end_elevation_m": 223.442158264549,
   "start_xy": [
    243323.53896702756,
    236756.19882000156
   ],
   "end_xy": [
    243348.20972431867,
    236752.15485983825
   ]
  },
  "min_50m": {
   "gradient_pct": -6.252509300233612,
   "start_distance_m": 2396.0,
   "end_distance_m": 2446.0,
   "midpoint_distance_m": 2421.0,
   "start_elevation_m": 226.53495288091264,
   "end_elevation_m": 223.40869823079584,
   "start_xy": [
    243302.5601599682,
    236764.475346592
   ],
   "end_xy": [
    243350.18329056777,
    236751.83076689768
   ]
  },
  "min_100m": {
   "gradient_pct": -3.7765388333883436,
   "start_distance_m": 2357.0,
   "end_distance_m": 2457.0,
   "midpoint_distance_m": 2407.0,
   "start_elevation_m": 227.39648783836185,
   "end_elevation_m": 223.6199490049735,
   "start_xy": [
    243269.80654768864,
    236785.64609595842
   ],
   "end_xy": [
    243361.03849604388,
    236750.05186576158
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 45.30535182575477,
   "start_distance_m": 59.0,
   "end_distance_m": 61.0,
   "midpoint_distance_m": 60.0,
   "start_elevation_m": 92.96867221198494,
   "end_elevation_m": 93.87477924850003,
   "start_xy": [
    242308.05173182077,
    238782.34330445662
   ],
   "end_xy": [
    242308.51772127984,
    238780.39834847517
   ]
  },
  "max_3m": {
   "gradient_pct": 39.821982710572,
   "start_distance_m": 59.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 60.5,
   "start_elevation_m": 92.96867221198494,
   "end_elevation_m": 94.1633316933021,
   "start_xy": [
    242308.05173182077,
    238782.34330445662
   ],
   "end_xy": [
    242308.75055454407,
    238779.425831824
   ]
  }
 },
 "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": 0.017,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.027,
   "windows_resited": [
    5.0,
    10.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 309.0,
     "end_m": 319.0,
     "raw_pct": 31.15,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 86.0,
     "end_m": 96.0,
     "raw_pct": 28.73,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.219,
   "obstruction_max_height_m": 18.34,
   "flagged_windows_m": [
    2,
    3,
    10
   ]
  },
  "excluded_ranges_m": [
   [
    39.0,
    44.0
   ],
   [
    84.0,
    98.0
   ],
   [
    189.0,
    194.0
   ],
   [
    245.0,
    250.0
   ],
   [
    274.0,
    279.0
   ],
   [
    307.0,
    321.0
   ],
   [
    356.0,
    361.0
   ],
   [
    618.0,
    623.0
   ],
   [
    790.0,
    795.0
   ],
   [
    2434.0,
    2439.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_242236_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_242237_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_242238_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_243236_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_243237_20220120dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_24_243238_20220120dtm.tif"
  ],
  "calculated_at": "2026-09-12T01:42:47+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-260912",
  "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_242236_20220120dtm.tif",
   "wg_del_24_242237_20220120dtm.tif",
   "wg_del_24_242238_20220120dtm.tif",
   "wg_del_24_243236_20220120dtm.tif",
   "wg_del_24_243237_20220120dtm.tif",
   "wg_del_24_243238_20220120dtm.tif"
  ],
  "elevation_capture_dates": [
   "20-01-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Llandysul",
  "county": "Sir Ceredigion - Ceredigion"
 }
}