{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.2098, -4.0541)",
 "slug": "discovered-lane-52-2098-4-0541",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.38191855620295,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1037.0,
   "end_distance_m": 1039.0,
   "start_elevation_m": 204.16078708647615,
   "end_elevation_m": 205.0284254576002,
   "min_gradient_pct": -38.99725806704737,
   "suppressed_max_gradient_pct": 58.84519818223879,
   "suppressed_location_m": [
    348.0,
    350.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.585654728343535,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1036.0,
   "end_distance_m": 1039.0,
   "start_elevation_m": 203.7508558157499,
   "end_elevation_m": 205.0284254576002,
   "min_gradient_pct": -30.75185622435394,
   "suppressed_max_gradient_pct": 51.218158787642665,
   "suppressed_location_m": [
    334.0,
    337.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.75579640889407,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 177.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 110.01711334571212,
   "end_elevation_m": 111.75490316615682,
   "min_gradient_pct": -17.54489928750843,
   "suppressed_max_gradient_pct": 43.06651026957468,
   "suppressed_location_m": [
    334.0,
    339.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.412696915627237,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 172.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 109.3136334745941,
   "end_elevation_m": 111.75490316615682,
   "min_gradient_pct": -12.311091904786053,
   "suppressed_max_gradient_pct": 32.07857753047762,
   "suppressed_location_m": [
    507.0,
    517.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.412600523676943,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 108.07238306142143,
   "end_elevation_m": 111.75490316615682,
   "min_gradient_pct": -8.221410067884705,
   "suppressed_max_gradient_pct": 30.435397100364554,
   "suppressed_location_m": [
    497.0,
    517.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.372963038831585,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 401.0,
   "end_distance_m": 426.0,
   "start_elevation_m": 139.78626889761387,
   "end_elevation_m": 143.87950965732176,
   "min_gradient_pct": -8.071125831184645,
   "suppressed_max_gradient_pct": 30.008578279551443,
   "suppressed_location_m": [
    496.0,
    521.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.43239319777163,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 133.0,
   "end_distance_m": 183.0,
   "start_elevation_m": 104.09246024398077,
   "end_elevation_m": 111.80865684286658,
   "min_gradient_pct": -7.29766912562161,
   "suppressed_max_gradient_pct": 25.603091324864295,
   "suppressed_location_m": [
    490.0,
    540.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.30596639177716,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 82.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 97.44893677437966,
   "end_elevation_m": 111.75490316615682,
   "min_gradient_pct": -4.889291525498493,
   "suppressed_max_gradient_pct": 20.839524896280324,
   "suppressed_location_m": [
    454.0,
    554.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.466,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 136.0,
  "shape_class": "stepped"
 },
 "length_m": 2654.7493099110234,
 "start_elevation_m": 90.4603528258051,
 "end_elevation_m": 251.91228931544333,
 "endpoint_gain_m": 161.45193648963823,
 "overall_gradient_pct": 6.081626460430249,
 "accumulated_ascent_m": 197.9797811227093,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.75579640889407,
   "start_distance_m": 177.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 179.5,
   "start_elevation_m": 110.01711334571212,
   "end_elevation_m": 111.75490316615682,
   "start_xy": [
    259734.66332374632,
    258821.88131954797
   ],
   "end_xy": [
    259737.0102937873,
    258826.29626314322
   ]
  },
  "max_10m": {
   "gradient_pct": 24.412696915627237,
   "start_distance_m": 172.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 177.0,
   "start_elevation_m": 109.3136334745941,
   "end_elevation_m": 111.75490316615682,
   "start_xy": [
    259732.31637257364,
    258817.46636592026
   ],
   "end_xy": [
    259737.0102937873,
    258826.29626314322
   ]
  },
  "max_20m": {
   "gradient_pct": 18.412600523676943,
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 108.07238306142143,
   "end_elevation_m": 111.75490316615682,
   "start_xy": [
    259727.6231934025,
    258808.63607414588
   ],
   "end_xy": [
    259737.0102937873,
    258826.29626314322
   ]
  },
  "max_25m": {
   "gradient_pct": 16.372963038831585,
   "start_distance_m": 401.0,
   "end_distance_m": 426.0,
   "midpoint_distance_m": 413.5,
   "start_elevation_m": 139.78626889761387,
   "end_elevation_m": 143.87950965732176,
   "start_xy": [
    259535.4550529169,
    258827.22282899747
   ],
   "end_xy": [
    259513.03713126015,
    258838.2879384506
   ]
  },
  "max_50m": {
   "gradient_pct": 15.43239319777163,
   "start_distance_m": 133.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 158.0,
   "start_elevation_m": 104.09246024398077,
   "end_elevation_m": 111.80865684286658,
   "start_xy": [
    259714.01123503235,
    258783.0291525236
   ],
   "end_xy": [
    259737.47939478897,
    258827.17940765675
   ]
  },
  "max_100m": {
   "gradient_pct": 14.30596639177716,
   "start_distance_m": 82.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 97.44893677437966,
   "end_elevation_m": 111.75490316615682,
   "start_xy": [
    259690.0732323052,
    258737.99614738915
   ],
   "end_xy": [
    259737.0102937873,
    258826.29626314322
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.54489928750843,
   "start_distance_m": 1362.0,
   "end_distance_m": 1367.0,
   "midpoint_distance_m": 1364.5,
   "start_elevation_m": 211.41071913626507,
   "end_elevation_m": 210.53347417188965,
   "start_xy": [
    258673.97663754638,
    258945.34663699998
   ],
   "end_xy": [
    258669.57271910083,
    258942.97904442076
   ]
  },
  "min_10m": {
   "gradient_pct": -12.311091904786053,
   "start_distance_m": 1362.0,
   "end_distance_m": 1372.0,
   "midpoint_distance_m": 1367.0,
   "start_elevation_m": 211.41071913626507,
   "end_elevation_m": 210.17960994578647,
   "start_xy": [
    258673.97663754638,
    258945.34663699998
   ],
   "end_xy": [
    258665.18976716808,
    258940.5770487966
   ]
  },
  "min_20m": {
   "gradient_pct": -8.221410067884705,
   "start_distance_m": 2530.0,
   "end_distance_m": 2550.0,
   "midpoint_distance_m": 2540.0,
   "start_elevation_m": 251.04300894003495,
   "end_elevation_m": 249.398726926458,
   "start_xy": [
    257643.05067370558,
    258974.08532973498
   ],
   "end_xy": [
    257629.1829275108,
    258988.46773098267
   ]
  },
  "min_25m": {
   "gradient_pct": -8.071125831184645,
   "start_distance_m": 2529.0,
   "end_distance_m": 2554.0,
   "midpoint_distance_m": 2541.5,
   "start_elevation_m": 251.12356656130692,
   "end_elevation_m": 249.10578510351075,
   "start_xy": [
    257643.70203723345,
    258973.32656401812
   ],
   "end_xy": [
    257626.30128880605,
    258991.24192589265
   ]
  },
  "min_50m": {
   "gradient_pct": -7.29766912562161,
   "start_distance_m": 2516.0,
   "end_distance_m": 2566.0,
   "midpoint_distance_m": 2541.0,
   "start_elevation_m": 251.93556939401208,
   "end_elevation_m": 248.28673483120127,
   "start_xy": [
    257652.16718267545,
    258963.46039470757
   ],
   "end_xy": [
    257617.6560506288,
    258999.56417626978
   ]
  },
  "min_100m": {
   "gradient_pct": -4.889291525498493,
   "start_distance_m": 2463.0,
   "end_distance_m": 2563.0,
   "midpoint_distance_m": 2513.0,
   "start_elevation_m": 253.32475248644292,
   "end_elevation_m": 248.43546096094443,
   "start_xy": [
    257695.18148411452,
    258933.45744858854
   ],
   "end_xy": [
    257619.8174818891,
    258997.4837400402
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.38191855620295,
   "start_distance_m": 1037.0,
   "end_distance_m": 1039.0,
   "midpoint_distance_m": 1038.0,
   "start_elevation_m": 204.16078708647615,
   "end_elevation_m": 205.0284254576002,
   "start_xy": [
    258990.22757641465,
    258958.1593743232
   ],
   "end_xy": [
    258988.36787766145,
    258957.42349352624
   ]
  },
  "max_3m": {
   "gradient_pct": 42.585654728343535,
   "start_distance_m": 1036.0,
   "end_distance_m": 1039.0,
   "midpoint_distance_m": 1037.5,
   "start_elevation_m": 203.7508558157499,
   "end_elevation_m": 205.0284254576002,
   "start_xy": [
    258991.15742579126,
    258958.5273147217
   ],
   "end_xy": [
    258988.36787766145,
    258957.42349352624
   ]
  }
 },
 "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
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.063,
   "windows_resited": [
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 4,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 496.0,
     "end_m": 521.0,
     "raw_pct": 30.01,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 497.0,
     "end_m": 517.0,
     "raw_pct": 30.44,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 507.0,
     "end_m": 517.0,
     "raw_pct": 32.08,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 334.0,
     "end_m": 339.0,
     "raw_pct": 43.07,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 211.0,
     "end_m": 236.0,
     "raw_pct": 19.08,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 216.0,
     "end_m": 236.0,
     "raw_pct": 20.93,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 732.0,
     "end_m": 737.0,
     "raw_pct": 35.78,
     "reason": "short-step"
    },
    {
     "window_m": 25.0,
     "start_m": 524.0,
     "end_m": 549.0,
     "raw_pct": 19.05,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 524.0,
     "end_m": 544.0,
     "raw_pct": 19.38,
     "reason": "mask-edge"
    },
    {
     "window_m": 25.0,
     "start_m": 468.0,
     "end_m": 493.0,
     "raw_pct": 18.29,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 241.0,
     "end_m": 261.0,
     "raw_pct": 19.37,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.401,
   "obstruction_max_height_m": 24.14,
   "flagged_windows_m": [
    5,
    10,
    20,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    209.0,
    263.0
   ],
   [
    332.0,
    341.0
   ],
   [
    346.0,
    351.0
   ],
   [
    466.0,
    551.0
   ],
   [
    730.0,
    739.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "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/wales/dtm_1m/wg_del_23_257258_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_257259_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_258258_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_258259_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_259258_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_259259_20220117dtm.tif"
  ],
  "calculated_at": "2026-09-12T00:08:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-wales/batch-england-rchunk03.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_23_257258_20220117dtm.tif",
   "wg_del_23_257259_20220117dtm.tif",
   "wg_del_23_258258_20220117dtm.tif",
   "wg_del_23_258259_20220117dtm.tif",
   "wg_del_23_259258_20220117dtm.tif",
   "wg_del_23_259259_20220117dtm.tif"
  ],
  "elevation_capture_dates": [
   "17-01-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Capel Betws Lleucu",
  "county": "Sir Ceredigion - Ceredigion"
 }
}