{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.3658, -3.9014)",
 "slug": "discovered-lane-50-3658-3-9014",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.04539695935662,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 296.0,
   "end_distance_m": 298.0,
   "start_elevation_m": 32.53418121339434,
   "end_elevation_m": 33.23508915258147,
   "min_gradient_pct": -29.914192408874563,
   "suppressed_max_gradient_pct": 48.769520083355644,
   "suppressed_location_m": [
    405.0,
    407.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.08603880751524,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 349.0,
   "end_distance_m": 352.0,
   "start_elevation_m": 39.99828747687562,
   "end_elevation_m": 40.840868641101075,
   "min_gradient_pct": -23.23990389350949,
   "suppressed_max_gradient_pct": 44.17553436538739,
   "suppressed_location_m": [
    404.0,
    407.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.392269360211827,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 366.0,
   "end_distance_m": 371.0,
   "start_elevation_m": 42.78494343016365,
   "end_elevation_m": 43.90455689817424,
   "min_gradient_pct": -14.041711564535433,
   "suppressed_max_gradient_pct": 37.86377851810471,
   "suppressed_location_m": [
    402.0,
    407.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 19.055670740338755,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 362.0,
   "end_distance_m": 372.0,
   "start_elevation_m": 42.18435496965614,
   "end_elevation_m": 44.08992204369002,
   "min_gradient_pct": -8.604163561239275,
   "suppressed_max_gradient_pct": 30.796603074976048,
   "suppressed_location_m": [
    268.0,
    278.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.746065102552002,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 358.0,
   "end_distance_m": 378.0,
   "start_elevation_m": 41.46984274931632,
   "end_elevation_m": 45.01905576982672,
   "min_gradient_pct": -7.2427453792796825,
   "suppressed_max_gradient_pct": 24.897628404213634,
   "suppressed_location_m": [
    259.0,
    279.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.563398782292836,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 354.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 40.77818977533806,
   "end_elevation_m": 45.16903947091127,
   "min_gradient_pct": -5.944908768279731,
   "suppressed_max_gradient_pct": 21.608241038931965,
   "suppressed_location_m": [
    224.0,
    249.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.183060555488595,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 335.0,
   "end_distance_m": 385.0,
   "start_elevation_m": 38.021150651488895,
   "end_elevation_m": 46.11268092923319,
   "min_gradient_pct": -1.6232716942887393,
   "suppressed_max_gradient_pct": 20.798435408730754,
   "suppressed_location_m": [
    230.0,
    280.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.881483200096518,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 296.0,
   "end_distance_m": 396.0,
   "start_elevation_m": 32.53418121339434,
   "end_elevation_m": 47.41566441349086,
   "min_gradient_pct": -0.6844478245301566,
   "suppressed_max_gradient_pct": 15.915687896238637,
   "suppressed_location_m": [
    307.0,
    407.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.517,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 121.0,
  "shape_class": "stepped"
 },
 "length_m": 519.8604506471592,
 "start_elevation_m": 17.404493269842078,
 "end_elevation_m": 54.64971823094595,
 "endpoint_gain_m": 37.24522496110387,
 "overall_gradient_pct": 7.164465947493866,
 "accumulated_ascent_m": 43.018772261707724,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.392269360211827,
   "start_distance_m": 366.0,
   "end_distance_m": 371.0,
   "midpoint_distance_m": 368.5,
   "start_elevation_m": 42.78494343016365,
   "end_elevation_m": 43.90455689817424,
   "start_xy": [
    264714.9101191785,
    53651.3094848232
   ],
   "end_xy": [
    264710.9148045814,
    53654.31572146007
   ]
  },
  "max_10m": {
   "gradient_pct": 19.055670740338755,
   "start_distance_m": 362.0,
   "end_distance_m": 372.0,
   "midpoint_distance_m": 367.0,
   "start_elevation_m": 42.18435496965614,
   "end_elevation_m": 44.08992204369002,
   "start_xy": [
    264718.10581464635,
    53648.903756674496
   ],
   "end_xy": [
    264710.1156661867,
    53654.91686853018
   ]
  },
  "max_20m": {
   "gradient_pct": 17.746065102552002,
   "start_distance_m": 358.0,
   "end_distance_m": 378.0,
   "midpoint_distance_m": 368.0,
   "start_elevation_m": 41.46984274931632,
   "end_elevation_m": 45.01905576982672,
   "start_xy": [
    264721.30194963043,
    53646.49861235557
   ],
   "end_xy": [
    264705.3216525326,
    53658.524835829674
   ]
  },
  "max_25m": {
   "gradient_pct": 17.563398782292836,
   "start_distance_m": 354.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 366.5,
   "start_elevation_m": 40.77818977533806,
   "end_elevation_m": 45.16903947091127,
   "start_xy": [
    264724.49810517905,
    53644.093495353416
   ],
   "end_xy": [
    264704.52251422935,
    53659.12598302118
   ]
  },
  "max_50m": {
   "gradient_pct": 16.183060555488595,
   "start_distance_m": 335.0,
   "end_distance_m": 385.0,
   "midpoint_distance_m": 360.0,
   "start_elevation_m": 38.021150651488895,
   "end_elevation_m": 46.11268092923319,
   "start_xy": [
    264740.2711635444,
    53633.534998199844
   ],
   "end_xy": [
    264699.72852122487,
    53662.733977750475
   ]
  },
  "max_100m": {
   "gradient_pct": 14.881483200096518,
   "start_distance_m": 296.0,
   "end_distance_m": 396.0,
   "midpoint_distance_m": 346.0,
   "start_elevation_m": 32.53418121339434,
   "end_elevation_m": 47.41566441349086,
   "start_xy": [
    264774.38046898955,
    53614.812501324035
   ],
   "end_xy": [
    264690.9388518443,
    53669.34772864796
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -14.041711564535433,
   "start_distance_m": 279.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 281.5,
   "start_elevation_m": 31.92709574347706,
   "end_elevation_m": 31.22501016525029,
   "start_xy": [
    264790.05912186566,
    53608.25600947604
   ],
   "end_xy": [
    264785.4115011806,
    53610.08848753786
   ]
  },
  "min_10m": {
   "gradient_pct": -8.604163561239275,
   "start_distance_m": 497.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 502.0,
   "start_elevation_m": 56.2008385815962,
   "end_elevation_m": 55.340422225472274,
   "start_xy": [
    264651.3567010824,
    53751.47669411554
   ],
   "end_xy": [
    264651.3355326806,
    53761.47665969991
   ]
  },
  "min_20m": {
   "gradient_pct": -7.2427453792796825,
   "start_distance_m": 497.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 507.0,
   "start_elevation_m": 56.2008385815962,
   "end_elevation_m": 54.752289505740265,
   "start_xy": [
    264651.3567010824,
    53751.47669411554
   ],
   "end_xy": [
    264651.8601102142,
    53771.43439177696
   ]
  },
  "min_25m": {
   "gradient_pct": -5.944908768279731,
   "start_distance_m": 492.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 504.5,
   "start_elevation_m": 56.2385166978102,
   "end_elevation_m": 54.752289505740265,
   "start_xy": [
    264651.29403334635,
    53746.47710099751
   ],
   "end_xy": [
    264651.8601102142,
    53771.43439177696
   ]
  },
  "min_50m": {
   "gradient_pct": -1.6232716942887393,
   "start_distance_m": 1.0,
   "end_distance_m": 51.0,
   "midpoint_distance_m": 26.0,
   "start_elevation_m": 17.401513351592698,
   "end_elevation_m": 16.589877504448328,
   "start_xy": [
    264854.71589125955,
    53385.507142834
   ],
   "end_xy": [
    264836.8751433353,
    53429.72544257101
   ]
  },
  "min_100m": {
   "gradient_pct": -0.6844478245301566,
   "start_distance_m": 1.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 17.401513351592698,
   "end_elevation_m": 16.71706552706254,
   "start_xy": [
    264854.71589125955,
    53385.507142834
   ],
   "end_xy": [
    264857.91127948475,
    53474.95302939976
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.04539695935662,
   "start_distance_m": 296.0,
   "end_distance_m": 298.0,
   "midpoint_distance_m": 297.0,
   "start_elevation_m": 32.53418121339434,
   "end_elevation_m": 33.23508915258147,
   "start_xy": [
    264774.38046898955,
    53614.812501324035
   ],
   "end_xy": [
    264772.54177193664,
    53615.59938939822
   ]
  },
  "max_3m": {
   "gradient_pct": 28.08603880751524,
   "start_distance_m": 349.0,
   "end_distance_m": 352.0,
   "midpoint_distance_m": 350.5,
   "start_elevation_m": 39.99828747687562,
   "end_elevation_m": 40.840868641101075,
   "start_xy": [
    264728.4937809767,
    53641.087739215276
   ],
   "end_xy": [
    264726.0963246905,
    53642.891125827686
   ]
  }
 },
 "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": 0.135,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 224.0,
     "end_m": 249.0,
     "raw_pct": 21.61,
     "reason": "staircase"
    },
    {
     "window_m": 5.0,
     "start_m": 402.0,
     "end_m": 407.0,
     "raw_pct": 37.86,
     "reason": "short-step"
    },
    {
     "window_m": 25.0,
     "start_m": 255.0,
     "end_m": 280.0,
     "raw_pct": 21.47,
     "reason": "staircase+mask-edge"
    },
    {
     "window_m": 5.0,
     "start_m": 269.0,
     "end_m": 274.0,
     "raw_pct": 35.0,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.161,
   "obstruction_max_height_m": 11.58,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    222.0,
    251.0
   ],
   [
    253.0,
    282.0
   ],
   [
    400.0,
    409.0
   ]
  ],
  "review": [],
  "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/england/bulk_dtm_1m/SX6050.tif"
  ],
  "calculated_at": "2026-09-12T01:37:51+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk00.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": [
   "SX6050.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Ermington",
  "county": "Devon"
 }
}