{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.3974, -2.7089)",
 "slug": "discovered-lane-52-3974-2-7089",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.99025228752032,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1340.0,
   "end_distance_m": 1342.0,
   "start_elevation_m": 179.66468589212496,
   "end_elevation_m": 180.16449093787537,
   "min_gradient_pct": -15.503375599911351,
   "suppressed_max_gradient_pct": 53.50268507550027,
   "suppressed_location_m": [
    1169.0,
    1171.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.27619239089711,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1090.0,
   "end_distance_m": 1093.0,
   "start_elevation_m": 142.32340589721508,
   "end_elevation_m": 142.961691668942,
   "min_gradient_pct": -13.962934446411168,
   "suppressed_max_gradient_pct": 51.32451733230331,
   "suppressed_location_m": [
    1169.0,
    1172.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.8832350458772,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1089.0,
   "end_distance_m": 1094.0,
   "start_elevation_m": 142.11100386827218,
   "end_elevation_m": 143.15516562056604,
   "min_gradient_pct": -11.031391804341695,
   "suppressed_max_gradient_pct": 47.44347761310621,
   "suppressed_location_m": [
    1168.0,
    1173.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 19.927567126247823,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1089.0,
   "end_distance_m": 1099.0,
   "start_elevation_m": 142.11100386827218,
   "end_elevation_m": 144.10376058089696,
   "min_gradient_pct": -9.196569370347305,
   "suppressed_max_gradient_pct": 37.91661952557604,
   "suppressed_location_m": [
    1165.0,
    1175.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.229496835429785,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1207.0,
   "end_distance_m": 1227.0,
   "start_elevation_m": 159.66086506335975,
   "end_elevation_m": 163.1067644304457,
   "min_gradient_pct": -6.5133528003848795,
   "suppressed_max_gradient_pct": 25.208713528273137,
   "suppressed_location_m": [
    1159.0,
    1179.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.013377371574393,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1207.0,
   "end_distance_m": 1232.0,
   "start_elevation_m": 159.66086506335975,
   "end_elevation_m": 163.91420940625335,
   "min_gradient_pct": -5.910819525302372,
   "suppressed_max_gradient_pct": 22.788670008352483,
   "suppressed_location_m": [
    1154.0,
    1179.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.529689260571217,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1203.0,
   "end_distance_m": 1253.0,
   "start_elevation_m": 159.01659201086756,
   "end_elevation_m": 167.28143664115316,
   "min_gradient_pct": -5.2252265060039065,
   "suppressed_max_gradient_pct": 17.999760864310645,
   "suppressed_location_m": [
    1138.0,
    1188.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.66564660663363,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1203.0,
   "end_distance_m": 1303.0,
   "start_elevation_m": 159.01659201086756,
   "end_elevation_m": 174.68223861750118,
   "min_gradient_pct": -3.852533480632289,
   "suppressed_max_gradient_pct": 16.50076416675489,
   "suppressed_location_m": [
    1164.0,
    1264.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.525,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 151.0,
  "shape_class": "stepped"
 },
 "length_m": 2821.7957321386652,
 "start_elevation_m": 101.08508533409108,
 "end_elevation_m": 242.4650373701495,
 "endpoint_gain_m": 141.37995203605843,
 "overall_gradient_pct": 5.010283006165908,
 "accumulated_ascent_m": 153.36645178406923,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.8832350458772,
   "start_distance_m": 1089.0,
   "end_distance_m": 1094.0,
   "midpoint_distance_m": 1091.5,
   "start_elevation_m": 142.11100386827218,
   "end_elevation_m": 143.15516562056604,
   "start_xy": [
    351870.21678759623,
    277585.4575016727
   ],
   "end_xy": [
    351875.15446951095,
    277586.2444511267
   ]
  },
  "max_10m": {
   "gradient_pct": 19.927567126247823,
   "start_distance_m": 1089.0,
   "end_distance_m": 1099.0,
   "midpoint_distance_m": 1094.0,
   "start_elevation_m": 142.11100386827218,
   "end_elevation_m": 144.10376058089696,
   "start_xy": [
    351870.21678759623,
    277585.4575016727
   ],
   "end_xy": [
    351880.11892575433,
    277586.66949485044
   ]
  },
  "max_20m": {
   "gradient_pct": 17.229496835429785,
   "start_distance_m": 1207.0,
   "end_distance_m": 1227.0,
   "midpoint_distance_m": 1217.0,
   "start_elevation_m": 159.66086506335975,
   "end_elevation_m": 163.1067644304457,
   "start_xy": [
    351908.22981974535,
    277639.3388554056
   ],
   "end_xy": [
    351897.42079055106,
    277656.16635701765
   ]
  },
  "max_25m": {
   "gradient_pct": 17.013377371574393,
   "start_distance_m": 1207.0,
   "end_distance_m": 1232.0,
   "midpoint_distance_m": 1219.5,
   "start_elevation_m": 159.66086506335975,
   "end_elevation_m": 163.91420940625335,
   "start_xy": [
    351908.22981974535,
    277639.3388554056
   ],
   "end_xy": [
    351894.7178566576,
    277660.37279795617
   ]
  },
  "max_50m": {
   "gradient_pct": 16.529689260571217,
   "start_distance_m": 1203.0,
   "end_distance_m": 1253.0,
   "midpoint_distance_m": 1228.0,
   "start_elevation_m": 159.01659201086756,
   "end_elevation_m": 167.28143664115316,
   "start_xy": [
    351910.39174308255,
    277635.97343080887
   ],
   "end_xy": [
    351883.31598485244,
    277678.005328352
   ]
  },
  "max_100m": {
   "gradient_pct": 15.66564660663363,
   "start_distance_m": 1203.0,
   "end_distance_m": 1303.0,
   "midpoint_distance_m": 1253.0,
   "start_elevation_m": 159.01659201086756,
   "end_elevation_m": 174.68223861750118,
   "start_xy": [
    351910.39174308255,
    277635.97343080887
   ],
   "end_xy": [
    351851.7443172112,
    277716.77665902395
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.031391804341695,
   "start_distance_m": 285.0,
   "end_distance_m": 290.0,
   "midpoint_distance_m": 287.5,
   "start_elevation_m": 110.1213811684989,
   "end_elevation_m": 109.56981157828181,
   "start_xy": [
    351601.6218351635,
    276851.19497309544
   ],
   "end_xy": [
    351603.06423134566,
    276855.982403561
   ]
  },
  "min_10m": {
   "gradient_pct": -9.196569370347305,
   "start_distance_m": 285.0,
   "end_distance_m": 295.0,
   "midpoint_distance_m": 290.0,
   "start_elevation_m": 110.1213811684989,
   "end_elevation_m": 109.20172423146417,
   "start_xy": [
    351601.6218351635,
    276851.19497309544
   ],
   "end_xy": [
    351604.5071287426,
    276860.76968237595
   ]
  },
  "min_20m": {
   "gradient_pct": -6.5133528003848795,
   "start_distance_m": 284.0,
   "end_distance_m": 304.0,
   "midpoint_distance_m": 294.0,
   "start_elevation_m": 110.1471210193164,
   "end_elevation_m": 108.84445045923943,
   "start_xy": [
    351601.33309363545,
    276850.2375661216
   ],
   "end_xy": [
    351607.1047422367,
    276869.38666430744
   ]
  },
  "min_25m": {
   "gradient_pct": -5.910819525302372,
   "start_distance_m": 287.0,
   "end_distance_m": 312.0,
   "midpoint_distance_m": 299.5,
   "start_elevation_m": 109.92487241277203,
   "end_elevation_m": 108.44716753144644,
   "start_xy": [
    351602.1988240367,
    276853.1099361219
   ],
   "end_xy": [
    351609.41321797186,
    276877.04635922855
   ]
  },
  "min_50m": {
   "gradient_pct": -5.2252265060039065,
   "start_distance_m": 286.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 311.0,
   "start_elevation_m": 110.05203479945148,
   "end_elevation_m": 107.43942154644952,
   "start_xy": [
    351601.91025364876,
    276852.1524774932
   ],
   "end_xy": [
    351616.3391935263,
    276900.02527819446
   ]
  },
  "min_100m": {
   "gradient_pct": -3.852533480632289,
   "start_distance_m": 264.0,
   "end_distance_m": 364.0,
   "midpoint_distance_m": 314.0,
   "start_elevation_m": 110.6731769519841,
   "end_elevation_m": 106.82064347135181,
   "start_xy": [
    351595.21594062395,
    276832.1399504664
   ],
   "end_xy": [
    351624.4192521793,
    276926.83409112645
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.99025228752032,
   "start_distance_m": 1340.0,
   "end_distance_m": 1342.0,
   "midpoint_distance_m": 1341.0,
   "start_elevation_m": 179.66468589212496,
   "end_elevation_m": 180.16449093787537,
   "start_xy": [
    351828.6411087345,
    277745.6299929821
   ],
   "end_xy": [
    351828.00623371627,
    277747.5261809604
   ]
  },
  "max_3m": {
   "gradient_pct": 21.27619239089711,
   "start_distance_m": 1090.0,
   "end_distance_m": 1093.0,
   "midpoint_distance_m": 1091.5,
   "start_elevation_m": 142.32340589721508,
   "end_elevation_m": 142.961691668942,
   "start_xy": [
    351871.2043185878,
    277585.61492536665
   ],
   "end_xy": [
    351874.1669638553,
    277586.08686858066
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.012,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 20.0,
     "start_m": 1159.0,
     "end_m": 1179.0,
     "raw_pct": 25.21,
     "reason": "staircase"
    },
    {
     "window_m": 10.0,
     "start_m": 1165.0,
     "end_m": 1175.0,
     "raw_pct": 37.92,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 1117.0,
     "end_m": 1122.0,
     "raw_pct": 28.45,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.012,
   "obstruction_max_height_m": 19.2,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1115.0,
    1124.0
   ],
   [
    1157.0,
    1181.0
   ]
  ],
  "review": [],
  "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/england/bulk_dtm_1m/SO5075.tif"
  ],
  "calculated_at": "2026-09-12T01:40:05+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-260912",
  "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": [
   "SO5075.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Ludlow",
  "county": "Shropshire"
 }
}