{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.4207, -3.9217)",
 "slug": "discovered-lane-52-4207-3-9217",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 41.645302259156836,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1287.0,
   "end_distance_m": 1289.0,
   "start_elevation_m": 188.76871668645146,
   "end_elevation_m": 189.6016227316346,
   "min_gradient_pct": -24.392721992550292
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.20339674263929,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1818.0,
   "end_distance_m": 1821.0,
   "start_elevation_m": 253.9926795873398,
   "end_elevation_m": 254.988781489619,
   "min_gradient_pct": -16.987673344849934
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.997881434412193,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1818.0,
   "end_distance_m": 1823.0,
   "start_elevation_m": 253.9926795873398,
   "end_elevation_m": 255.39257365906042,
   "min_gradient_pct": -8.862141025109054
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.565191380008798,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 911.0,
   "end_distance_m": 921.0,
   "start_elevation_m": 151.18304669967216,
   "end_elevation_m": 153.73956583767304,
   "min_gradient_pct": -5.222129688914521
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.419924133660714,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 902.0,
   "end_distance_m": 922.0,
   "start_elevation_m": 149.17119391424728,
   "end_elevation_m": 153.85517874097943,
   "min_gradient_pct": -1.9058509848764515
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.948344231067153,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 896.0,
   "end_distance_m": 921.0,
   "start_elevation_m": 148.25247977990625,
   "end_elevation_m": 153.73956583767304,
   "min_gradient_pct": -1.8218108559631219
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.197754686917392,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1785.0,
   "end_distance_m": 1835.0,
   "start_elevation_m": 248.49607049079083,
   "end_elevation_m": 257.5949478342495,
   "min_gradient_pct": -0.8679257057114
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.00305508458382,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1546.0,
   "end_distance_m": 1646.0,
   "start_elevation_m": 214.92507111115242,
   "end_elevation_m": 231.92812619573624,
   "min_gradient_pct": 1.57996623558995
  }
 ],
 "shape": {
  "ascent_concentration": 0.347,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 147.0,
  "shape_class": "sustained"
 },
 "length_m": 1993.3787010671479,
 "start_elevation_m": 80.57336843416421,
 "end_elevation_m": 269.2541143321244,
 "endpoint_gain_m": 188.6807458979602,
 "overall_gradient_pct": 9.465373829716887,
 "accumulated_ascent_m": 195.48412018765728,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.997881434412193,
   "start_distance_m": 1818.0,
   "end_distance_m": 1823.0,
   "midpoint_distance_m": 1820.5,
   "start_elevation_m": 253.9926795873398,
   "end_elevation_m": 255.39257365906042,
   "start_xy": [
    269994.7793882335,
    282199.4917813367
   ],
   "end_xy": [
    269999.1430332285,
    282201.8067697553
   ]
  },
  "max_10m": {
   "gradient_pct": 25.565191380008798,
   "start_distance_m": 911.0,
   "end_distance_m": 921.0,
   "midpoint_distance_m": 916.0,
   "start_elevation_m": 151.18304669967216,
   "end_elevation_m": 153.73956583767304,
   "start_xy": [
    269134.05028541613,
    282045.2124334451
   ],
   "end_xy": [
    269143.0854607874,
    282049.49794461776
   ]
  },
  "max_20m": {
   "gradient_pct": 23.419924133660714,
   "start_distance_m": 902.0,
   "end_distance_m": 922.0,
   "midpoint_distance_m": 912.0,
   "start_elevation_m": 149.17119391424728,
   "end_elevation_m": 153.85517874097943,
   "start_xy": [
    269125.918627582,
    282041.3554733897
   ],
   "end_xy": [
    269143.9889783245,
    282049.926495735
   ]
  },
  "max_25m": {
   "gradient_pct": 21.948344231067153,
   "start_distance_m": 896.0,
   "end_distance_m": 921.0,
   "midpoint_distance_m": 908.5,
   "start_elevation_m": 148.25247977990625,
   "end_elevation_m": 153.73956583767304,
   "start_xy": [
    269120.4975223593,
    282038.78416668606
   ],
   "end_xy": [
    269143.0854607874,
    282049.49794461776
   ]
  },
  "max_50m": {
   "gradient_pct": 18.197754686917392,
   "start_distance_m": 1785.0,
   "end_distance_m": 1835.0,
   "midpoint_distance_m": 1810.0,
   "start_elevation_m": 248.49607049079083,
   "end_elevation_m": 257.5949478342495,
   "start_xy": [
    269968.2956277123,
    282179.95041365793
   ],
   "end_xy": [
    270010.33308914345,
    282206.14066507266
   ]
  },
  "max_100m": {
   "gradient_pct": 17.00305508458382,
   "start_distance_m": 1546.0,
   "end_distance_m": 1646.0,
   "midpoint_distance_m": 1596.0,
   "start_elevation_m": 214.92507111115242,
   "end_elevation_m": 231.92812619573624,
   "start_xy": [
    269746.8518246543,
    282110.01980838657
   ],
   "end_xy": [
    269844.8098128501,
    282116.72052728554
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.862141025109054,
   "start_distance_m": 723.0,
   "end_distance_m": 728.0,
   "midpoint_distance_m": 725.5,
   "start_elevation_m": 127.76172626076189,
   "end_elevation_m": 127.31861920950644,
   "start_xy": [
    269018.66173481627,
    281910.0153145922
   ],
   "end_xy": [
    269019.5924251841,
    281914.9279325745
   ]
  },
  "min_10m": {
   "gradient_pct": -5.222129688914521,
   "start_distance_m": 620.0,
   "end_distance_m": 630.0,
   "midpoint_distance_m": 625.0,
   "start_elevation_m": 117.03670082035937,
   "end_elevation_m": 116.51448785146792,
   "start_xy": [
    268974.6022585874,
    281817.6221518904
   ],
   "end_xy": [
    268979.67601545405,
    281826.2394015246
   ]
  },
  "min_20m": {
   "gradient_pct": -1.9058509848764515,
   "start_distance_m": 1960.0,
   "end_distance_m": 1980.0,
   "midpoint_distance_m": 1970.0,
   "start_elevation_m": 269.6313733767346,
   "end_elevation_m": 269.2502031797593,
   "start_xy": [
    270126.8382325639,
    282246.0869751379
   ],
   "end_xy": [
    270143.3674315192,
    282257.3468855237
   ]
  },
  "min_25m": {
   "gradient_pct": -1.8218108559631219,
   "start_distance_m": 1954.0,
   "end_distance_m": 1979.0,
   "midpoint_distance_m": 1966.5,
   "start_elevation_m": 269.712327119165,
   "end_elevation_m": 269.25687440517424,
   "start_xy": [
    270121.8794728773,
    282242.7090020221
   ],
   "end_xy": [
    270142.54097157146,
    282256.7838900044
   ]
  },
  "min_50m": {
   "gradient_pct": -0.8679257057114,
   "start_distance_m": 1941.0,
   "end_distance_m": 1991.0,
   "midpoint_distance_m": 1966.0,
   "start_elevation_m": 269.6546428781319,
   "end_elevation_m": 269.2206800252762,
   "start_xy": [
    270110.9352204175,
    282235.7255663508
   ],
   "end_xy": [
    270152.4982520222,
    282263.4808578837
   ]
  },
  "min_100m": {
   "gradient_pct": 1.57996623558995,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 80.57336843416421,
   "end_elevation_m": 82.15333466975416,
   "start_xy": [
    268757.449,
    281552.747
   ],
   "end_xy": [
    268853.52283824707,
    281530.904473004
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 41.645302259156836,
   "start_distance_m": 1287.0,
   "end_distance_m": 1289.0,
   "midpoint_distance_m": 1288.0,
   "start_elevation_m": 188.76871668645146,
   "end_elevation_m": 189.6016227316346,
   "start_xy": [
    269499.01973318454,
    282060.73279302666
   ],
   "end_xy": [
    269500.8555418626,
    282061.52639651555
   ]
  },
  "max_3m": {
   "gradient_pct": 33.20339674263929,
   "start_distance_m": 1818.0,
   "end_distance_m": 1821.0,
   "midpoint_distance_m": 1819.5,
   "start_elevation_m": 253.9926795873398,
   "end_elevation_m": 254.988781489619,
   "start_xy": [
    269994.7793882335,
    282199.4917813367
   ],
   "end_xy": [
    269997.27802390937,
    282201.08445386915
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.036,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.442,
   "obstruction_max_height_m": 34.17,
   "flagged_windows_m": [
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    810.0,
    840.0
   ],
   [
    1660.0,
    1700.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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_22_268281_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_268282_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_269281_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_269282_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_270281_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_270282_20220114dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:05:44+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/wales-2026-08-11.osm.pbf",
  "osm_snapshot": "2026-08-10T20:21:40Z",
  "run_id": "hunt-wales-260905",
  "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_22_268281_20220114dtm.tif",
   "wg_del_22_268282_20220114dtm.tif",
   "wg_del_22_269281_20220114dtm.tif",
   "wg_del_22_269282_20220114dtm.tif",
   "wg_del_22_270281_20220114dtm.tif",
   "wg_del_22_270282_20220114dtm.tif"
  ],
  "elevation_capture_dates": [
   "14-01-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Goginan",
  "county": "Sir Ceredigion - Ceredigion"
 }
}