{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (51.9857, -4.4788)",
 "slug": "discovered-lane-51-9857-4-4788",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.173626505016216,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 395.0,
   "end_distance_m": 397.0,
   "start_elevation_m": 157.01342462824815,
   "end_elevation_m": 157.87689715834847,
   "min_gradient_pct": -31.064811545473958,
   "suppressed_max_gradient_pct": 123.57900374922792,
   "suppressed_location_m": [
    383.0,
    385.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.387355122308385,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 264.0,
   "start_elevation_m": 139.34223220965293,
   "end_elevation_m": 140.4038528633222,
   "min_gradient_pct": -22.86649467271123,
   "suppressed_max_gradient_pct": 106.44400966796657,
   "suppressed_location_m": [
    383.0,
    386.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.15985341637986,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 217.0,
   "end_distance_m": 222.0,
   "start_elevation_m": 132.00530471104625,
   "end_elevation_m": 133.51329738186524,
   "min_gradient_pct": -13.33812592751599,
   "suppressed_max_gradient_pct": 77.0814763629727,
   "suppressed_location_m": [
    383.0,
    388.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.79147082221033,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 215.0,
   "end_distance_m": 225.0,
   "start_elevation_m": 131.64507478860912,
   "end_elevation_m": 134.12422187083016,
   "min_gradient_pct": -6.075318199824551,
   "suppressed_max_gradient_pct": 45.13377782122717,
   "suppressed_location_m": [
    383.0,
    393.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.781885673659588,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 395.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 157.01342462824815,
   "end_elevation_m": 161.56980176298006,
   "min_gradient_pct": -5.7218004011798484,
   "suppressed_max_gradient_pct": 32.606434926332355,
   "suppressed_location_m": [
    383.0,
    403.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.142692272899467,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 211.0,
   "end_distance_m": 236.0,
   "start_elevation_m": 130.9829864790867,
   "end_elevation_m": 136.26865954731156,
   "min_gradient_pct": -5.642728540360849,
   "suppressed_max_gradient_pct": 31.13170910230349,
   "suppressed_location_m": [
    383.0,
    408.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.706503228314972,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 52.0,
   "end_distance_m": 102.0,
   "start_elevation_m": 101.44118813974434,
   "end_elevation_m": 111.29443975390183,
   "min_gradient_pct": -5.257289200660807,
   "suppressed_max_gradient_pct": 23.291584631025724,
   "suppressed_location_m": [
    365.0,
    415.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.82489751291432,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 50.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 101.08664959809856,
   "end_elevation_m": 119.91154711101288,
   "min_gradient_pct": -5.064269698470696,
   "suppressed_max_gradient_pct": 18.876259636493245,
   "suppressed_location_m": [
    329.0,
    429.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.482,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 248.0,
  "shape_class": "stepped"
 },
 "length_m": 4663.438762436867,
 "start_elevation_m": 92.49170011450317,
 "end_elevation_m": 305.97354438946513,
 "endpoint_gain_m": 213.48184427496196,
 "overall_gradient_pct": 4.577777368806009,
 "accumulated_ascent_m": 238.6280521087309,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.15985341637986,
   "start_distance_m": 217.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 219.5,
   "start_elevation_m": 132.00530471104625,
   "end_elevation_m": 133.51329738186524,
   "start_xy": [
    230037.43578226815,
    234781.7407997369
   ],
   "end_xy": [
    230041.35704229758,
    234778.63859022091
   ]
  },
  "max_10m": {
   "gradient_pct": 24.79147082221033,
   "start_distance_m": 215.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 220.0,
   "start_elevation_m": 131.64507478860912,
   "end_elevation_m": 134.12422187083016,
   "start_xy": [
    230035.86801333787,
    234782.98261315963
   ],
   "end_xy": [
    230043.7086947755,
    234776.77586892754
   ]
  },
  "max_20m": {
   "gradient_pct": 22.781885673659588,
   "start_distance_m": 395.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 405.0,
   "start_elevation_m": 157.01342462824815,
   "end_elevation_m": 161.56980176298006,
   "start_xy": [
    230166.7481156309,
    234662.68550970193
   ],
   "end_xy": [
    230175.58728473965,
    234644.74511175003
   ]
  },
  "max_25m": {
   "gradient_pct": 21.142692272899467,
   "start_distance_m": 211.0,
   "end_distance_m": 236.0,
   "midpoint_distance_m": 223.5,
   "start_elevation_m": 130.9829864790867,
   "end_elevation_m": 136.26865954731156,
   "start_xy": [
    230032.73199245168,
    234785.46562970345
   ],
   "end_xy": [
    230052.06764443073,
    234769.63557444347
   ]
  },
  "max_50m": {
   "gradient_pct": 19.706503228314972,
   "start_distance_m": 52.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 101.44118813974434,
   "end_elevation_m": 111.29443975390183,
   "start_xy": [
    229883.3008276998,
    234821.3464590779
   ],
   "end_xy": [
    229931.96357550574,
    234816.77726143325
   ]
  },
  "max_100m": {
   "gradient_pct": 18.82489751291432,
   "start_distance_m": 50.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 100.0,
   "start_elevation_m": 101.08664959809856,
   "end_elevation_m": 119.91154711101288,
   "start_xy": [
    229881.62664185485,
    234822.44058053213
   ],
   "end_xy": [
    229979.53522383366,
    234814.18400856998
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -13.33812592751599,
   "start_distance_m": 378.0,
   "end_distance_m": 383.0,
   "midpoint_distance_m": 380.5,
   "start_elevation_m": 152.96551485534997,
   "end_elevation_m": 152.29860855897417,
   "start_xy": [
    230158.82934541363,
    234677.68134052167
   ],
   "end_xy": [
    230161.55706654416,
    234673.50461195654
   ]
  },
  "min_10m": {
   "gradient_pct": -6.075318199824551,
   "start_distance_m": 4096.0,
   "end_distance_m": 4106.0,
   "midpoint_distance_m": 4101.0,
   "start_elevation_m": 308.02475357512736,
   "end_elevation_m": 307.4172217551449,
   "start_xy": [
    233223.63711625602,
    233891.4119411397
   ],
   "end_xy": [
    233233.5414725048,
    233892.76991085976
   ]
  },
  "min_20m": {
   "gradient_pct": -5.7218004011798484,
   "start_distance_m": 4096.0,
   "end_distance_m": 4116.0,
   "midpoint_distance_m": 4106.0,
   "start_elevation_m": 308.02475357512736,
   "end_elevation_m": 306.8803934948914,
   "start_xy": [
    233223.63711625602,
    233891.4119411397
   ],
   "end_xy": [
    233243.49323991005,
    233893.75088795094
   ]
  },
  "min_25m": {
   "gradient_pct": -5.642728540360849,
   "start_distance_m": 4096.0,
   "end_distance_m": 4121.0,
   "midpoint_distance_m": 4108.5,
   "start_elevation_m": 308.02475357512736,
   "end_elevation_m": 306.61407144003715,
   "start_xy": [
    233223.63711625602,
    233891.4119411397
   ],
   "end_xy": [
    233248.4691726322,
    233894.24088132457
   ]
  },
  "min_50m": {
   "gradient_pct": -5.257289200660807,
   "start_distance_m": 4093.0,
   "end_distance_m": 4143.0,
   "midpoint_distance_m": 4118.0,
   "start_elevation_m": 308.17964667313277,
   "end_elevation_m": 305.55100207280236,
   "start_xy": [
    233220.67260316113,
    233890.95187579317
   ],
   "end_xy": [
    233270.3872040357,
    233896.1048487558
   ]
  },
  "min_100m": {
   "gradient_pct": -5.064269698470696,
   "start_distance_m": 4093.0,
   "end_distance_m": 4193.0,
   "midpoint_distance_m": 4143.0,
   "start_elevation_m": 308.17964667313277,
   "end_elevation_m": 303.11537697466207,
   "start_xy": [
    233220.67260316113,
    233890.95187579317
   ],
   "end_xy": [
    233319.80572846267,
    233889.92009923208
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.173626505016216,
   "start_distance_m": 395.0,
   "end_distance_m": 397.0,
   "midpoint_distance_m": 396.0,
   "start_elevation_m": 157.01342462824815,
   "end_elevation_m": 157.87689715834847,
   "start_xy": [
    230166.7481156309,
    234662.68550970193
   ],
   "end_xy": [
    230167.6132201258,
    234660.8822920243
   ]
  },
  "max_3m": {
   "gradient_pct": 35.387355122308385,
   "start_distance_m": 261.0,
   "end_distance_m": 264.0,
   "midpoint_distance_m": 262.5,
   "start_elevation_m": 139.34223220965293,
   "end_elevation_m": 140.4038528633222,
   "start_xy": [
    230070.45774628382,
    234752.7004450556
   ],
   "end_xy": [
    230072.65516638546,
    234750.65805824214
   ]
  }
 },
 "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": 0.006,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.019,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.023,
   "windows_resited": [
    3.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 368.0,
     "end_m": 378.0,
     "raw_pct": 25.48,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.217,
   "obstruction_max_height_m": 21.24,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ],
   [
    280.0,
    340.0
   ],
   [
    366.0,
    388.0
   ]
  ],
  "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_14_229233_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_229234_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_230233_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_230234_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_231233_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_231234_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_232233_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_232234_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_233233_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_233234_20210321dtm.tif"
  ],
  "calculated_at": "2026-09-12T01:42:36+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_14_229233_20210321dtm.tif",
   "wg_del_14_229234_20210321dtm.tif",
   "wg_del_14_230233_20210321dtm.tif",
   "wg_del_14_230234_20210321dtm.tif",
   "wg_del_14_231233_20210321dtm.tif",
   "wg_del_14_231234_20210321dtm.tif",
   "wg_del_14_232233_20210321dtm.tif",
   "wg_del_14_232234_20210321dtm.tif",
   "wg_del_14_233233_20210321dtm.tif",
   "wg_del_14_233234_20210321dtm.tif"
  ],
  "elevation_capture_dates": [
   "21-03-2021"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Cwmorgan",
  "county": "Sir Gaerfyrddin - Carmarthenshire"
 }
}