{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.6692, -4.7293)",
 "slug": "discovered-lane-50-6692-4-7293",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 52.8994745757565,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 218.0,
   "end_distance_m": 220.0,
   "start_elevation_m": 79.31362952589264,
   "end_elevation_m": 80.37161901740777,
   "min_gradient_pct": -24.760184322583,
   "suppressed_max_gradient_pct": 59.399454199934354,
   "suppressed_location_m": [
    209.0,
    211.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 45.1303296249994,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 217.0,
   "end_distance_m": 220.0,
   "start_elevation_m": 79.01770912865778,
   "end_elevation_m": 80.37161901740777,
   "min_gradient_pct": -17.387834736480084,
   "suppressed_max_gradient_pct": 45.860913357467346,
   "suppressed_location_m": [
    208.0,
    211.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.679139221516664,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "start_elevation_m": 81.82658582840354,
   "end_elevation_m": 83.56054278947937,
   "min_gradient_pct": -7.351577861512055,
   "suppressed_max_gradient_pct": 37.00992548127516,
   "suppressed_location_m": [
    178.0,
    183.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.512091425655257,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 123.0,
   "end_distance_m": 133.0,
   "start_elevation_m": 58.614362117265294,
   "end_elevation_m": 61.66557125983082,
   "min_gradient_pct": -2.1417025286325497,
   "suppressed_max_gradient_pct": 31.902193011680566,
   "suppressed_location_m": [
    173.0,
    183.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.493437932617212,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 122.0,
   "end_distance_m": 142.0,
   "start_elevation_m": 58.37027423338311,
   "end_elevation_m": 63.66896181990655,
   "min_gradient_pct": 0.12042226254969535,
   "suppressed_max_gradient_pct": 28.498265024736895,
   "suppressed_location_m": [
    174.0,
    194.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.80787430727068,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 122.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 58.37027423338311,
   "end_elevation_m": 64.57224281020078,
   "min_gradient_pct": 0.3329993361722927,
   "suppressed_max_gradient_pct": 27.372251446716405,
   "suppressed_location_m": [
    170.0,
    195.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.895525640226907,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 117.0,
   "end_distance_m": 167.0,
   "start_elevation_m": 58.20676662415673,
   "end_elevation_m": 68.65452944427018,
   "min_gradient_pct": 1.2762847567048254,
   "suppressed_max_gradient_pct": 23.883023131275422,
   "suppressed_location_m": [
    145.0,
    195.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.91526766433877,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 67.0,
   "end_distance_m": 167.0,
   "start_elevation_m": 55.73926177993141,
   "end_elevation_m": 68.65452944427018,
   "min_gradient_pct": 4.4948571440330625,
   "suppressed_max_gradient_pct": 22.39117861431211,
   "suppressed_location_m": [
    121.0,
    221.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.513,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 114.0,
  "shape_class": "stepped"
 },
 "length_m": 466.32681021152246,
 "start_elevation_m": 51.80352912434369,
 "end_elevation_m": 100.32536087921096,
 "endpoint_gain_m": 48.52183175486727,
 "overall_gradient_pct": 10.405113043545175,
 "accumulated_ascent_m": 51.77980001366967,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.679139221516664,
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 234.5,
   "start_elevation_m": 81.82658582840354,
   "end_elevation_m": 83.56054278947937,
   "start_xy": [
    207196.01259969966,
    88981.0664289987
   ],
   "end_xy": [
    207197.92338703145,
    88976.44594341078
   ]
  },
  "max_10m": {
   "gradient_pct": 30.512091425655257,
   "start_distance_m": 123.0,
   "end_distance_m": 133.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 58.614362117265294,
   "end_elevation_m": 61.66557125983082,
   "start_xy": [
    207210.49104241072,
    89064.88046114401
   ],
   "end_xy": [
    207200.87369452434,
    89062.14064027021
   ]
  },
  "max_20m": {
   "gradient_pct": 26.493437932617212,
   "start_distance_m": 122.0,
   "end_distance_m": 142.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 58.37027423338311,
   "end_elevation_m": 63.66896181990655,
   "start_xy": [
    207211.45304911977,
    89065.15348691237
   ],
   "end_xy": [
    207192.2178440556,
    89059.67563679432
   ]
  },
  "max_25m": {
   "gradient_pct": 24.80787430727068,
   "start_distance_m": 122.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 134.5,
   "start_elevation_m": 58.37027423338311,
   "end_elevation_m": 64.57224281020078,
   "start_xy": [
    207211.45304911977,
    89065.15348691237
   ],
   "end_xy": [
    207187.76757969637,
    89057.48165330905
   ]
  },
  "max_50m": {
   "gradient_pct": 20.895525640226907,
   "start_distance_m": 117.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 142.0,
   "start_elevation_m": 58.20676662415673,
   "end_elevation_m": 68.65452944427018,
   "start_xy": [
    207216.26199321507,
    89066.52244713194
   ],
   "end_xy": [
    207175.8677639296,
    89042.67203974965
   ]
  },
  "max_100m": {
   "gradient_pct": 12.91526766433877,
   "start_distance_m": 67.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 117.0,
   "start_elevation_m": 55.73926177993141,
   "end_elevation_m": 68.65452944427018,
   "start_xy": [
    207243.47770786745,
    89026.91952704327
   ],
   "end_xy": [
    207175.8677639296,
    89042.67203974965
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.351577861512055,
   "start_distance_m": 237.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 239.5,
   "start_elevation_m": 83.56054278947937,
   "end_elevation_m": 83.19296389640377,
   "start_xy": [
    207197.92338703145,
    88976.44594341078
   ],
   "end_xy": [
    207200.30411896354,
    88972.06564073189
   ]
  },
  "min_10m": {
   "gradient_pct": -2.1417025286325497,
   "start_distance_m": 237.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 83.56054278947937,
   "end_elevation_m": 83.34637253661612,
   "start_xy": [
    207197.92338703145,
    88976.44594341078
   ],
   "end_xy": [
    207202.9920853226,
    88967.84962024775
   ]
  },
  "min_20m": {
   "gradient_pct": 0.12042226254969535,
   "start_distance_m": 422.0,
   "end_distance_m": 442.0,
   "midpoint_distance_m": 432.0,
   "start_elevation_m": 100.00802426554458,
   "end_elevation_m": 100.03210871805452,
   "start_xy": [
    207223.20535802594,
    88807.71694893068
   ],
   "end_xy": [
    207203.29750264253,
    88808.47004804228
   ]
  },
  "min_25m": {
   "gradient_pct": 0.3329993361722927,
   "start_distance_m": 423.0,
   "end_distance_m": 448.0,
   "midpoint_distance_m": 435.5,
   "start_elevation_m": 100.03174112161912,
   "end_elevation_m": 100.1149909556622,
   "start_xy": [
    207222.2241942779,
    88807.91012658869
   ],
   "end_xy": [
    207197.2983200291,
    88808.37105817864
   ]
  },
  "min_50m": {
   "gradient_pct": 1.2762847567048254,
   "start_distance_m": 416.0,
   "end_distance_m": 466.0,
   "midpoint_distance_m": 441.0,
   "start_elevation_m": 99.67639060920527,
   "end_elevation_m": 100.31453298755768,
   "start_xy": [
    207226.61342269508,
    88811.09304722464
   ],
   "end_xy": [
    207180.9978969688,
    88803.49952972893
   ]
  },
  "min_100m": {
   "gradient_pct": 4.4948571440330625,
   "start_distance_m": 366.0,
   "end_distance_m": 466.0,
   "midpoint_distance_m": 416.0,
   "start_elevation_m": 95.81967584352462,
   "end_elevation_m": 100.31453298755768,
   "start_xy": [
    207240.78739569554,
    88859.04195573152
   ],
   "end_xy": [
    207180.9978969688,
    88803.49952972893
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 52.8994745757565,
   "start_distance_m": 218.0,
   "end_distance_m": 220.0,
   "midpoint_distance_m": 219.0,
   "start_elevation_m": 79.31362952589264,
   "end_elevation_m": 80.37161901740777,
   "start_xy": [
    207190.66363354493,
    88994.00430097105
   ],
   "end_xy": [
    207191.42741136852,
    88992.15588454319
   ]
  },
  "max_3m": {
   "gradient_pct": 45.1303296249994,
   "start_distance_m": 217.0,
   "end_distance_m": 220.0,
   "midpoint_distance_m": 218.5,
   "start_elevation_m": 79.01770912865778,
   "end_elevation_m": 80.37161901740777,
   "start_xy": [
    207190.28044070487,
    88994.92796926737
   ],
   "end_xy": [
    207191.42741136852,
    88992.15588454319
   ]
  }
 },
 "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": 0.013,
   "windows_resited": [
    2.0,
    3.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.077,
   "windows_resited": [
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 170.0,
     "end_m": 195.0,
     "raw_pct": 27.37,
     "reason": "staircase+hump"
    },
    {
     "window_m": 20.0,
     "start_m": 174.0,
     "end_m": 194.0,
     "raw_pct": 28.5,
     "reason": "staircase+hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.09,
   "obstruction_max_height_m": 5.62,
   "flagged_windows_m": [
    2,
    10,
    20,
    25
   ]
  },
  "excluded_ranges_m": [
   [
    168.0,
    197.0
   ],
   [
    208.0,
    213.0
   ]
  ],
  "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/SX0585.tif"
  ],
  "calculated_at": "2026-09-12T01:38:17+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk02.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": [
   "SX0585.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Trethevey",
  "county": "Cornwall"
 }
}