{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.4267, -2.7148)",
 "slug": "discovered-lane-52-4267-2-7148",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.944562696199796,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1168.0,
   "end_distance_m": 1170.0,
   "start_elevation_m": 132.85528485470417,
   "end_elevation_m": 133.73417610862816,
   "min_gradient_pct": -81.58362437972073,
   "suppressed_max_gradient_pct": 57.39240888613324,
   "suppressed_location_m": [
    1172.0,
    1174.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 37.12890314338134,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1167.0,
   "end_distance_m": 1170.0,
   "start_elevation_m": 132.62030901432672,
   "end_elevation_m": 133.73417610862816,
   "min_gradient_pct": -74.98406391436845,
   "suppressed_max_gradient_pct": 55.3391589780432,
   "suppressed_location_m": [
    1171.0,
    1174.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.89345740953445,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1538.0,
   "end_distance_m": 1543.0,
   "start_elevation_m": 177.49535798356615,
   "end_elevation_m": 178.94003085404287,
   "min_gradient_pct": -59.668409174685735,
   "suppressed_max_gradient_pct": 52.70081913068964,
   "suppressed_location_m": [
    1170.0,
    1175.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.787954797548082,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1414.0,
   "end_distance_m": 1424.0,
   "start_elevation_m": 161.76983812617917,
   "end_elevation_m": 164.24863360593397,
   "min_gradient_pct": -42.61249206735556,
   "suppressed_max_gradient_pct": 42.22573338634362,
   "suppressed_location_m": [
    1168.0,
    1178.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.678793965274508,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1607.0,
   "end_distance_m": 1627.0,
   "start_elevation_m": 188.5441289156373,
   "end_elevation_m": 192.4798877086922,
   "min_gradient_pct": -19.795188142503548,
   "suppressed_max_gradient_pct": 30.077093934964694,
   "suppressed_location_m": [
    1168.0,
    1188.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.62018869510166,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1604.0,
   "end_distance_m": 1629.0,
   "start_elevation_m": 187.9587316704857,
   "end_elevation_m": 192.8637788442611,
   "min_gradient_pct": -15.067039279457845,
   "suppressed_max_gradient_pct": 26.185627837449374,
   "suppressed_location_m": [
    1164.0,
    1189.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.235087299905388,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1596.0,
   "end_distance_m": 1646.0,
   "start_elevation_m": 186.4582672868167,
   "end_elevation_m": 196.0758109367694,
   "min_gradient_pct": -4.378726658549567,
   "suppressed_max_gradient_pct": 22.93747830415282,
   "suppressed_location_m": [
    1356.0,
    1406.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.143363524894056,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1596.0,
   "end_distance_m": 1696.0,
   "start_elevation_m": 186.4582672868167,
   "end_elevation_m": 204.60163081171075,
   "min_gradient_pct": -2.307222069564915,
   "suppressed_max_gradient_pct": 19.12342449746174,
   "suppressed_location_m": [
    1340.0,
    1440.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.574,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 304.0,
  "shape_class": "stepped"
 },
 "length_m": 2506.1164277179623,
 "start_elevation_m": 107.0683834338375,
 "end_elevation_m": 254.56795017929085,
 "endpoint_gain_m": 147.49956674545336,
 "overall_gradient_pct": 5.885583172197813,
 "accumulated_ascent_m": 162.49207564630743,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.89345740953445,
   "start_distance_m": 1538.0,
   "end_distance_m": 1543.0,
   "midpoint_distance_m": 1540.5,
   "start_elevation_m": 177.49535798356615,
   "end_elevation_m": 178.94003085404287,
   "start_xy": [
    351749.5985119647,
    280991.5156908471
   ],
   "end_xy": [
    351753.8151179079,
    280988.8286424266
   ]
  },
  "max_10m": {
   "gradient_pct": 24.787954797548082,
   "start_distance_m": 1414.0,
   "end_distance_m": 1424.0,
   "midpoint_distance_m": 1419.0,
   "start_elevation_m": 161.76983812617917,
   "end_elevation_m": 164.24863360593397,
   "start_xy": [
    351655.33437841554,
    281071.3236973664
   ],
   "end_xy": [
    351662.5729033613,
    281064.4241501115
   ]
  },
  "max_20m": {
   "gradient_pct": 19.678793965274508,
   "start_distance_m": 1607.0,
   "end_distance_m": 1627.0,
   "midpoint_distance_m": 1617.0,
   "start_elevation_m": 188.5441289156373,
   "end_elevation_m": 192.4798877086922,
   "start_xy": [
    351807.78522210714,
    280954.43057592685
   ],
   "end_xy": [
    351824.65055093414,
    280943.68066605256
   ]
  },
  "max_25m": {
   "gradient_pct": 19.62018869510166,
   "start_distance_m": 1604.0,
   "end_distance_m": 1629.0,
   "midpoint_distance_m": 1616.5,
   "start_elevation_m": 187.9587316704857,
   "end_elevation_m": 192.8637788442611,
   "start_xy": [
    351805.25522692944,
    280956.0427557994
   ],
   "end_xy": [
    351826.3371616302,
    280942.60579739575
   ]
  },
  "max_50m": {
   "gradient_pct": 19.235087299905388,
   "start_distance_m": 1596.0,
   "end_distance_m": 1646.0,
   "midpoint_distance_m": 1621.0,
   "start_elevation_m": 186.4582672868167,
   "end_elevation_m": 196.0758109367694,
   "start_xy": [
    351798.50906623283,
    280960.3426754054
   ],
   "end_xy": [
    351840.6757351167,
    280933.47328774486
   ]
  },
  "max_100m": {
   "gradient_pct": 18.143363524894056,
   "start_distance_m": 1596.0,
   "end_distance_m": 1696.0,
   "midpoint_distance_m": 1646.0,
   "start_elevation_m": 186.4582672868167,
   "end_elevation_m": 204.60163081171075,
   "start_xy": [
    351798.50906623283,
    280960.3426754054
   ],
   "end_xy": [
    351883.6857810266,
    280907.9755408553
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -59.668409174685735,
   "start_distance_m": 1230.0,
   "end_distance_m": 1235.0,
   "midpoint_distance_m": 1232.5,
   "start_elevation_m": 139.82942510015883,
   "end_elevation_m": 136.84600464142454,
   "start_xy": [
    351503.10322534177,
    281168.0745464397
   ],
   "end_xy": [
    351507.5079550995,
    281165.7084628214
   ]
  },
  "min_10m": {
   "gradient_pct": -42.61249206735556,
   "start_distance_m": 1226.0,
   "end_distance_m": 1236.0,
   "midpoint_distance_m": 1231.0,
   "start_elevation_m": 140.97352765182222,
   "end_elevation_m": 136.71227844508667,
   "start_xy": [
    351499.57980330614,
    281169.96808652993
   ],
   "end_xy": [
    351508.38845767453,
    281165.2344217025
   ]
  },
  "min_20m": {
   "gradient_pct": -19.795188142503548,
   "start_distance_m": 1217.0,
   "end_distance_m": 1237.0,
   "midpoint_distance_m": 1227.0,
   "start_elevation_m": 140.66040917762112,
   "end_elevation_m": 136.7013715491204,
   "start_xy": [
    351491.6514876297,
    281174.2274056199
   ],
   "end_xy": [
    351509.26950613357,
    281164.7613956854
   ]
  },
  "min_25m": {
   "gradient_pct": -15.067039279457845,
   "start_distance_m": 1212.0,
   "end_distance_m": 1237.0,
   "midpoint_distance_m": 1224.5,
   "start_elevation_m": 140.46813136898487,
   "end_elevation_m": 136.7013715491204,
   "start_xy": [
    351487.2473037559,
    281176.5945043399
   ],
   "end_xy": [
    351509.26950613357,
    281164.7613956854
   ]
  },
  "min_50m": {
   "gradient_pct": -4.378726658549567,
   "start_distance_m": 1189.0,
   "end_distance_m": 1239.0,
   "midpoint_distance_m": 1214.0,
   "start_elevation_m": 139.027757192374,
   "end_elevation_m": 136.8383938630992,
   "start_xy": [
    351466.9865569757,
    281187.48036838876
   ],
   "end_xy": [
    351511.02682589006,
    281163.8070894403
   ]
  },
  "min_100m": {
   "gradient_pct": -2.307222069564915,
   "start_distance_m": 732.0,
   "end_distance_m": 832.0,
   "midpoint_distance_m": 782.0,
   "start_elevation_m": 125.06095301486441,
   "end_elevation_m": 122.7537309452995,
   "start_xy": [
    351086.0039869704,
    281117.45123849215
   ],
   "end_xy": [
    351129.6495226184,
    281207.1266667207
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.944562696199796,
   "start_distance_m": 1168.0,
   "end_distance_m": 1170.0,
   "midpoint_distance_m": 1169.0,
   "start_elevation_m": 132.85528485470417,
   "end_elevation_m": 133.73417610862816,
   "start_xy": [
    351448.35177060985,
    281197.16097370995
   ],
   "end_xy": [
    351450.13167801924,
    281196.24887207325
   ]
  },
  "max_3m": {
   "gradient_pct": 37.12890314338134,
   "start_distance_m": 1167.0,
   "end_distance_m": 1170.0,
   "midpoint_distance_m": 1168.5,
   "start_elevation_m": 132.62030901432672,
   "end_elevation_m": 133.73417610862816,
   "start_xy": [
    351447.46230972494,
    281197.61798476457
   ],
   "end_xy": [
    351450.13167801924,
    281196.24887207325
   ]
  }
 },
 "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
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.037,
   "windows_resited": [
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 1356.0,
     "end_m": 1381.0,
     "raw_pct": 25.45,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 1355.0,
     "end_m": 1375.0,
     "raw_pct": 27.58,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 1359.0,
     "end_m": 1369.0,
     "raw_pct": 33.98,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 1264.0,
     "end_m": 1269.0,
     "raw_pct": 43.38,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 1396.0,
     "end_m": 1401.0,
     "raw_pct": 32.55,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.041,
   "obstruction_max_height_m": 15.44,
   "flagged_windows_m": [
    10
   ]
  },
  "excluded_ranges_m": [
   [
    1171.0,
    1176.0
   ],
   [
    1222.0,
    1257.0
   ],
   [
    1262.0,
    1271.0
   ],
   [
    1353.0,
    1383.0
   ],
   [
    1394.0,
    1403.0
   ]
  ],
  "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/england/bulk_dtm_1m/SO5080.tif"
  ],
  "calculated_at": "2026-09-11T23:29:27+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk04.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-england-260911",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
   "SO5080.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Lower Hayton",
  "county": "Shropshire"
 }
}