{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.2168, -4.0719)",
 "slug": "discovered-lane-52-2168-4-0719",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.38191855620295,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_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": -46.40034553353729,
   "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",
    "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": -44.4204277512398,
   "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",
    "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": -40.00001931141583,
   "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": -31.243449773060377,
   "suppressed_max_gradient_pct": 32.07857753047762,
   "suppressed_location_m": [
    507.0,
    517.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.894068525395312,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1902.0,
   "end_distance_m": 1922.0,
   "start_elevation_m": 196.5861663406433,
   "end_elevation_m": 200.56498004572236,
   "min_gradient_pct": -24.514773721291192,
   "suppressed_max_gradient_pct": 30.435397100364554,
   "suppressed_location_m": [
    497.0,
    517.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.210758063427647,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1896.0,
   "end_distance_m": 1921.0,
   "start_elevation_m": 195.57726812568882,
   "end_elevation_m": 200.37995764154573,
   "min_gradient_pct": -23.164675525616985,
   "suppressed_max_gradient_pct": 30.008578279551443,
   "suppressed_location_m": [
    496.0,
    521.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.004803365704106,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1810.0,
   "end_distance_m": 1860.0,
   "start_elevation_m": 181.98983438495924,
   "end_elevation_m": 190.4922360678113,
   "min_gradient_pct": -18.252620182931594,
   "suppressed_max_gradient_pct": 25.603091324864295,
   "suppressed_location_m": [
    490.0,
    540.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.76123352824669,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1822.0,
   "end_distance_m": 1922.0,
   "start_elevation_m": 183.80374651747567,
   "end_elevation_m": 200.56498004572236,
   "min_gradient_pct": -17.60108708950895,
   "suppressed_max_gradient_pct": 20.839524896280324,
   "suppressed_location_m": [
    454.0,
    554.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.384,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 217.0,
  "shape_class": "sustained"
 },
 "length_m": 3101.026726176685,
 "start_elevation_m": 90.4603528258051,
 "end_elevation_m": 258.8715212651056,
 "endpoint_gain_m": 168.41116843930052,
 "overall_gradient_pct": 5.430819638466576,
 "accumulated_ascent_m": 265.6328929365864,
 "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": 19.894068525395312,
   "start_distance_m": 1902.0,
   "end_distance_m": 1922.0,
   "midpoint_distance_m": 1912.0,
   "start_elevation_m": 196.5861663406433,
   "end_elevation_m": 200.56498004572236,
   "start_xy": [
    258567.96606779788,
    259456.38380881466
   ],
   "end_xy": [
    258570.55947611475,
    259476.00766734983
   ]
  },
  "max_25m": {
   "gradient_pct": 19.210758063427647,
   "start_distance_m": 1896.0,
   "end_distance_m": 1921.0,
   "midpoint_distance_m": 1908.5,
   "start_elevation_m": 195.57726812568882,
   "end_elevation_m": 200.37995764154573,
   "start_xy": [
    258568.330064618,
    259450.39486084
   ],
   "end_xy": [
    258570.31831554414,
    259475.03718213973
   ]
  },
  "max_50m": {
   "gradient_pct": 17.004803365704106,
   "start_distance_m": 1810.0,
   "end_distance_m": 1860.0,
   "midpoint_distance_m": 1835.0,
   "start_elevation_m": 181.98983438495924,
   "end_elevation_m": 190.4922360678113,
   "start_xy": [
    258569.05874808997,
    259364.55748561549
   ],
   "end_xy": [
    258570.51709537694,
    259414.46135760334
   ]
  },
  "max_100m": {
   "gradient_pct": 16.76123352824669,
   "start_distance_m": 1822.0,
   "end_distance_m": 1922.0,
   "midpoint_distance_m": 1872.0,
   "start_elevation_m": 183.80374651747567,
   "end_elevation_m": 200.56498004572236,
   "start_xy": [
    258569.81569141985,
    259376.5335878892
   ],
   "end_xy": [
    258570.55947611475,
    259476.00766734983
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -40.00001931141583,
   "start_distance_m": 1586.0,
   "end_distance_m": 1591.0,
   "midpoint_distance_m": 1588.5,
   "start_elevation_m": 199.26341535413167,
   "end_elevation_m": 197.26341438856088,
   "start_xy": [
    258605.16307921385,
    259156.33166100373
   ],
   "end_xy": [
    258601.6110840453,
    259159.85065621993
   ]
  },
  "min_10m": {
   "gradient_pct": -31.243449773060377,
   "start_distance_m": 1585.0,
   "end_distance_m": 1595.0,
   "midpoint_distance_m": 1590.0,
   "start_elevation_m": 199.6294628320119,
   "end_elevation_m": 196.50511785470587,
   "start_xy": [
    258605.88225682173,
    259155.6378584775
   ],
   "end_xy": [
    258598.76924251486,
    259162.6656040957
   ]
  },
  "min_20m": {
   "gradient_pct": -24.514773721291192,
   "start_distance_m": 1571.0,
   "end_distance_m": 1591.0,
   "midpoint_distance_m": 1581.0,
   "start_elevation_m": 202.1663691328191,
   "end_elevation_m": 197.26341438856088,
   "start_xy": [
    258617.32022945388,
    259147.56646311778
   ],
   "end_xy": [
    258601.6110840453,
    259159.85065621993
   ]
  },
  "min_25m": {
   "gradient_pct": -23.164675525616985,
   "start_distance_m": 1571.0,
   "end_distance_m": 1596.0,
   "midpoint_distance_m": 1583.5,
   "start_elevation_m": 202.1663691328191,
   "end_elevation_m": 196.37520025141487,
   "start_xy": [
    258617.32022945388,
    259147.56646311778
   ],
   "end_xy": [
    258598.05903637316,
    259163.369597737
   ]
  },
  "min_50m": {
   "gradient_pct": -18.252620182931594,
   "start_distance_m": 1569.0,
   "end_distance_m": 1619.0,
   "midpoint_distance_m": 1594.0,
   "start_elevation_m": 202.44288088577915,
   "end_elevation_m": 193.31657079431335,
   "start_xy": [
    258618.95803538538,
    259146.4185991316
   ],
   "end_xy": [
    258581.71926361666,
    259179.5563724139
   ]
  },
  "min_100m": {
   "gradient_pct": -17.60108708950895,
   "start_distance_m": 1573.0,
   "end_distance_m": 1673.0,
   "midpoint_distance_m": 1623.0,
   "start_elevation_m": 201.81726035341666,
   "end_elevation_m": 184.2161732639077,
   "start_xy": [
    258615.68317212176,
    259148.71539442003
   ],
   "end_xy": [
    258563.51207481424,
    259229.81140148622
   ]
  }
 },
 "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": 0.004,
   "windows_resited": [
    2.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.041,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 3,
   "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": 1983.0,
     "end_m": 2008.0,
     "raw_pct": 19.46,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 1982.0,
     "end_m": 2002.0,
     "raw_pct": 21.05,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 732.0,
     "end_m": 737.0,
     "raw_pct": 35.78,
     "reason": "short-step"
    },
    {
     "window_m": 20.0,
     "start_m": 216.0,
     "end_m": 236.0,
     "raw_pct": 20.93,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 1957.0,
     "end_m": 1962.0,
     "raw_pct": 35.52,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.561,
   "obstruction_max_height_m": 24.14,
   "flagged_windows_m": [
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    214.0,
    238.0
   ],
   [
    332.0,
    341.0
   ],
   [
    346.0,
    351.0
   ],
   [
    494.0,
    523.0
   ],
   [
    730.0,
    739.0
   ],
   [
    1955.0,
    1964.0
   ],
   [
    1980.0,
    2010.0
   ],
   [
    2061.0,
    2066.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "descends_at_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_258258_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_258259_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_258260_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_259258_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_259259_20220117dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_23_259260_20220117dtm.tif"
  ],
  "calculated_at": "2026-09-12T00:08:54+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_258258_20220117dtm.tif",
   "wg_del_23_258259_20220117dtm.tif",
   "wg_del_23_258260_20220117dtm.tif",
   "wg_del_23_259258_20220117dtm.tif",
   "wg_del_23_259259_20220117dtm.tif",
   "wg_del_23_259260_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"
 }
}