{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.7512, -3.2092)",
 "slug": "discovered-lane-50-7512-3-2092",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.73545119348165,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3016.0,
   "end_distance_m": 3018.0,
   "start_elevation_m": 194.74423850028109,
   "end_elevation_m": 195.51894752415072,
   "min_gradient_pct": -39.387106258850224,
   "suppressed_max_gradient_pct": 60.296374801772856,
   "suppressed_location_m": [
    3010.0,
    3012.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.508786403079206,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3156.0,
   "end_distance_m": 3159.0,
   "start_elevation_m": 208.3493095079993,
   "end_elevation_m": 209.35457310009167,
   "min_gradient_pct": -38.90687479830556,
   "suppressed_max_gradient_pct": 52.81405309328117,
   "suppressed_location_m": [
    3010.0,
    3013.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.445473406682254,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_unresolved"
   ],
   "start_distance_m": 3155.0,
   "end_distance_m": 3160.0,
   "start_elevation_m": 208.23838729250755,
   "end_elevation_m": 209.56066096284167,
   "min_gradient_pct": -30.378480089988784,
   "suppressed_max_gradient_pct": 46.00973768673441,
   "suppressed_location_m": [
    3010.0,
    3015.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.693237185656642,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2874.0,
   "end_distance_m": 2884.0,
   "start_elevation_m": 172.40297786507804,
   "end_elevation_m": 174.5723015836437,
   "min_gradient_pct": -16.429733833843585,
   "suppressed_max_gradient_pct": 33.36918745447775,
   "suppressed_location_m": [
    3008.0,
    3018.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.795286549733504,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2875.0,
   "end_distance_m": 2895.0,
   "start_elevation_m": 172.60425457667677,
   "end_elevation_m": 176.56331188662347,
   "min_gradient_pct": -9.965114860560433,
   "suppressed_max_gradient_pct": 27.45195857182196,
   "suppressed_location_m": [
    2910.0,
    2930.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.628212658162283,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2874.0,
   "end_distance_m": 2899.0,
   "start_elevation_m": 172.40297786507804,
   "end_elevation_m": 177.3100310296186,
   "min_gradient_pct": -8.511625497957255,
   "suppressed_max_gradient_pct": 26.356953172231556,
   "suppressed_location_m": [
    2905.0,
    2930.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.28957816236948,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2848.0,
   "end_distance_m": 2898.0,
   "start_elevation_m": 168.9632897180645,
   "end_elevation_m": 177.10807879924923,
   "min_gradient_pct": -6.689543786410468,
   "suppressed_max_gradient_pct": 22.851759707161023,
   "suppressed_location_m": [
    2880.0,
    2930.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.282758187510266,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2592.0,
   "end_distance_m": 2692.0,
   "start_elevation_m": 130.93518334862017,
   "end_elevation_m": 146.21794153613044,
   "min_gradient_pct": -2.728943009897975,
   "suppressed_max_gradient_pct": 18.65262158208961,
   "suppressed_location_m": [
    2844.0,
    2944.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.543,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 141.0,
  "shape_class": "stepped"
 },
 "length_m": 3481.46378773165,
 "start_elevation_m": 57.924708859939194,
 "end_elevation_m": 239.38553237838664,
 "endpoint_gain_m": 181.46082351844746,
 "overall_gradient_pct": 5.212199080108151,
 "accumulated_ascent_m": 207.78747719083665,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.445473406682254,
   "start_distance_m": 3155.0,
   "end_distance_m": 3160.0,
   "midpoint_distance_m": 3157.5,
   "start_elevation_m": 208.23838729250755,
   "end_elevation_m": 209.56066096284167,
   "start_xy": [
    314551.75180902355,
    95134.87659775093
   ],
   "end_xy": [
    314554.14798257384,
    95139.26503066087
   ]
  },
  "max_10m": {
   "gradient_pct": 21.693237185656642,
   "start_distance_m": 2874.0,
   "end_distance_m": 2884.0,
   "midpoint_distance_m": 2879.0,
   "start_elevation_m": 172.40297786507804,
   "end_elevation_m": 174.5723015836437,
   "start_xy": [
    314410.6393502921,
    94934.565125677
   ],
   "end_xy": [
    314420.032628653,
    94931.50246254618
   ]
  },
  "max_20m": {
   "gradient_pct": 19.795286549733504,
   "start_distance_m": 2875.0,
   "end_distance_m": 2895.0,
   "midpoint_distance_m": 2885.0,
   "start_elevation_m": 172.60425457667677,
   "end_elevation_m": 176.56331188662347,
   "start_xy": [
    314411.63545626024,
    94934.47696227967
   ],
   "end_xy": [
    314429.97507170786,
    94926.79633559816
   ]
  },
  "max_25m": {
   "gradient_pct": 19.628212658162283,
   "start_distance_m": 2874.0,
   "end_distance_m": 2899.0,
   "midpoint_distance_m": 2886.5,
   "start_elevation_m": 172.40297786507804,
   "end_elevation_m": 177.3100310296186,
   "start_xy": [
    314410.6393502921,
    94934.565125677
   ],
   "end_xy": [
    314433.8245759258,
    94926.09271856514
   ]
  },
  "max_50m": {
   "gradient_pct": 16.28957816236948,
   "start_distance_m": 2848.0,
   "end_distance_m": 2898.0,
   "midpoint_distance_m": 2873.0,
   "start_elevation_m": 168.9632897180645,
   "end_elevation_m": 177.10807879924923,
   "start_xy": [
    314402.85761843855,
    94915.85367771653
   ],
   "end_xy": [
    314432.8284019949,
    94926.00683268634
   ]
  },
  "max_100m": {
   "gradient_pct": 15.282758187510266,
   "start_distance_m": 2592.0,
   "end_distance_m": 2692.0,
   "midpoint_distance_m": 2642.0,
   "start_elevation_m": 130.93518334862017,
   "end_elevation_m": 146.21794153613044,
   "start_xy": [
    314410.75904280867,
    94699.76660758462
   ],
   "end_xy": [
    314464.0929055265,
    94781.16562168143
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -30.378480089988784,
   "start_distance_m": 1640.0,
   "end_distance_m": 1645.0,
   "midpoint_distance_m": 1642.5,
   "start_elevation_m": 110.86758228261546,
   "end_elevation_m": 109.34865827811602,
   "start_xy": [
    314305.43466907326,
    93789.44196481333
   ],
   "end_xy": [
    314304.1556295635,
    93794.273430173
   ]
  },
  "min_10m": {
   "gradient_pct": -16.429733833843585,
   "start_distance_m": 1635.0,
   "end_distance_m": 1645.0,
   "midpoint_distance_m": 1640.0,
   "start_elevation_m": 110.99163166150038,
   "end_elevation_m": 109.34865827811602,
   "start_xy": [
    314306.6186211039,
    93784.58416154874
   ],
   "end_xy": [
    314304.1556295635,
    93794.273430173
   ]
  },
  "min_20m": {
   "gradient_pct": -9.965114860560433,
   "start_distance_m": 1625.0,
   "end_distance_m": 1645.0,
   "midpoint_distance_m": 1635.0,
   "start_elevation_m": 111.3416812502281,
   "end_elevation_m": 109.34865827811602,
   "start_xy": [
    314308.9858054004,
    93774.86837956207
   ],
   "end_xy": [
    314304.1556295635,
    93794.273430173
   ]
  },
  "min_25m": {
   "gradient_pct": -8.511625497957255,
   "start_distance_m": 1620.0,
   "end_distance_m": 1645.0,
   "midpoint_distance_m": 1632.5,
   "start_elevation_m": 111.47656465260533,
   "end_elevation_m": 109.34865827811602,
   "start_xy": [
    314310.1688381415,
    93770.01035239232
   ],
   "end_xy": [
    314304.1556295635,
    93794.273430173
   ]
  },
  "min_50m": {
   "gradient_pct": -6.689543786410468,
   "start_distance_m": 2235.0,
   "end_distance_m": 2285.0,
   "midpoint_distance_m": 2260.0,
   "start_elevation_m": 126.8663120760464,
   "end_elevation_m": 123.52154018284116,
   "start_xy": [
    314388.5451177626,
    94347.33502080102
   ],
   "end_xy": [
    314386.07707128354,
    94396.71738998377
   ]
  },
  "min_100m": {
   "gradient_pct": -2.728943009897975,
   "start_distance_m": 1588.0,
   "end_distance_m": 1688.0,
   "midpoint_distance_m": 1638.0,
   "start_elevation_m": 111.99189960804269,
   "end_elevation_m": 109.26295659814471,
   "start_xy": [
    314315.4851044929,
    93738.59907701028
   ],
   "end_xy": [
    314289.3223691913,
    93834.63338315481
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.73545119348165,
   "start_distance_m": 3016.0,
   "end_distance_m": 3018.0,
   "midpoint_distance_m": 3017.0,
   "start_elevation_m": 194.74423850028109,
   "end_elevation_m": 195.51894752415072,
   "start_xy": [
    314496.034567662,
    95012.5204024944
   ],
   "end_xy": [
    314496.40491402836,
    95014.48579390036
   ]
  },
  "max_3m": {
   "gradient_pct": 33.508786403079206,
   "start_distance_m": 3156.0,
   "end_distance_m": 3159.0,
   "midpoint_distance_m": 3157.5,
   "start_elevation_m": 208.3493095079993,
   "end_elevation_m": 209.35457310009167,
   "start_xy": [
    314552.230731205,
    95135.7544551107
   ],
   "end_xy": [
    314553.6686883674,
    95138.38737658999
   ]
  }
 },
 "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": 0.002,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.03,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 4,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 2905.0,
     "end_m": 2930.0,
     "raw_pct": 26.36,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 2696.0,
     "end_m": 2721.0,
     "raw_pct": 23.03,
     "reason": "staircase"
    },
    {
     "window_m": 20.0,
     "start_m": 2791.0,
     "end_m": 2811.0,
     "raw_pct": 21.55,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 2794.0,
     "end_m": 2804.0,
     "raw_pct": 27.02,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 3044.0,
     "end_m": 3054.0,
     "raw_pct": 22.02,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 3048.0,
     "end_m": 3053.0,
     "raw_pct": 32.32,
     "reason": "hump+short-step"
    }
   ],
   "advisory": [],
   "unresolved": [
    {
     "window_m": 5.0,
     "start_m": 3155.0,
     "end_m": 3160.0,
     "pct": 26.45,
     "reason": "short-step"
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.113,
   "obstruction_max_height_m": 21.23,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    2694.0,
    2723.0
   ],
   [
    2789.0,
    2813.0
   ],
   [
    2903.0,
    2932.0
   ],
   [
    3009.0,
    3014.0
   ],
   [
    3042.0,
    3056.0
   ]
  ],
  "review": [
   "texture_unresolved"
  ],
  "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/SY1090.tif",
   "data/cache/england/bulk_dtm_1m/SY1095.tif"
  ],
  "calculated_at": "2026-09-12T01:37:17+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": [
   "SY1090.tif",
   "SY1095.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Sidbury",
  "county": "Devon"
 }
}