{
 "ocl_version": "0.1.0",
 "name": "Post Lane",
 "slug": "post-lane-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 19.662882708919938,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 274.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 204.99023150518622,
   "end_elevation_m": 205.38348915936461,
   "min_gradient_pct": -7.416337758463953,
   "suppressed_max_gradient_pct": 41.77270139220752,
   "suppressed_location_m": [
    259.0,
    261.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 17.95724679678017,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 273.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 204.8447717554612,
   "end_elevation_m": 205.38348915936461,
   "min_gradient_pct": -7.306650575484734,
   "suppressed_max_gradient_pct": 36.48711491238809,
   "suppressed_location_m": [
    173.0,
    176.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.296859497186574,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 271.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 204.5186461845053,
   "end_elevation_m": 205.38348915936461,
   "min_gradient_pct": -6.903888371707012,
   "suppressed_max_gradient_pct": 31.06400936226521,
   "suppressed_location_m": [
    171.0,
    176.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 15.906843066219949,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 270.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 204.36465114925494,
   "end_elevation_m": 205.95533545587693,
   "min_gradient_pct": -2.3427795417313746,
   "suppressed_max_gradient_pct": 24.77067093122656,
   "suppressed_location_m": [
    166.0,
    176.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 14.512806178973392,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 265.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 203.71333812460176,
   "end_elevation_m": 206.61589936039644,
   "min_gradient_pct": 1.3160447330048441,
   "suppressed_max_gradient_pct": 20.960682722241444,
   "suppressed_location_m": [
    242.0,
    262.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 13.825394261775045,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 77.0,
   "end_distance_m": 102.0,
   "start_elevation_m": 178.12098664115967,
   "end_elevation_m": 181.57733520660344,
   "min_gradient_pct": 1.9304509026692358,
   "suppressed_max_gradient_pct": 20.319392026029846,
   "suppressed_location_m": [
    237.0,
    262.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 13.424221848911543,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 81.0,
   "end_distance_m": 131.0,
   "start_elevation_m": 178.62046452710177,
   "end_elevation_m": 185.33257545155755,
   "min_gradient_pct": 2.7098895135068233,
   "suppressed_max_gradient_pct": 16.61798713948798,
   "suppressed_location_m": [
    230.0,
    280.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.922296863241058,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 68.0,
   "end_distance_m": 168.0,
   "start_elevation_m": 177.10807951077558,
   "end_elevation_m": 190.03037637401664,
   "min_gradient_pct": 4.172143443080131,
   "suppressed_max_gradient_pct": 14.61429032055955,
   "suppressed_location_m": [
    162.0,
    262.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.416,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 101.0,
  "shape_class": "sustained"
 },
 "length_m": 644.9298964197085,
 "start_elevation_m": 173.04728191741896,
 "end_elevation_m": 226.77523853222738,
 "endpoint_gain_m": 53.72795661480842,
 "overall_gradient_pct": 8.33082121220866,
 "accumulated_ascent_m": 54.459636163565136,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.296859497186574,
   "start_distance_m": 271.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 273.5,
   "start_elevation_m": 204.5186461845053,
   "end_elevation_m": 205.38348915936461,
   "start_xy": [
    320665.4059490724,
    104813.97101576392
   ],
   "end_xy": [
    320660.4065271989,
    104814.04702209203
   ]
  },
  "max_10m": {
   "gradient_pct": 15.906843066219949,
   "start_distance_m": 270.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 275.0,
   "start_elevation_m": 204.36465114925494,
   "end_elevation_m": 205.95533545587693,
   "start_xy": [
    320666.4058211132,
    104813.9550188622
   ],
   "end_xy": [
    320656.4069926194,
    104814.1080151107
   ]
  },
  "max_20m": {
   "gradient_pct": 14.512806178973392,
   "start_distance_m": 265.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 275.0,
   "start_elevation_m": 203.71333812460176,
   "end_elevation_m": 206.61589936039644,
   "start_xy": [
    320671.4052431935,
    104813.8790263521
   ],
   "end_xy": [
    320651.4075707836,
    104814.18402286746
   ]
  },
  "max_25m": {
   "gradient_pct": 13.825394261775045,
   "start_distance_m": 77.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 89.5,
   "start_elevation_m": 178.12098664115967,
   "end_elevation_m": 181.57733520660344,
   "start_xy": [
    320858.20396178646,
    104794.31009381448
   ],
   "end_xy": [
    320833.307413209,
    104796.58205361242
   ]
  },
  "max_50m": {
   "gradient_pct": 13.424221848911543,
   "start_distance_m": 81.0,
   "end_distance_m": 131.0,
   "midpoint_distance_m": 106.0,
   "start_elevation_m": 178.62046452710177,
   "end_elevation_m": 185.33257545155755,
   "start_xy": [
    320854.22046325734,
    104794.67304903975
   ],
   "end_xy": [
    320804.4274643125,
    104799.21804894332
   ]
  },
  "max_100m": {
   "gradient_pct": 12.922296863241058,
   "start_distance_m": 68.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 177.10807951077558,
   "end_elevation_m": 190.03037637401664,
   "start_xy": [
    320867.16670463834,
    104793.49202671614
   ],
   "end_xy": [
    320767.7437404656,
    104803.99317666527
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.903888371707012,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 173.04728191741896,
   "end_elevation_m": 172.7020874988336,
   "start_xy": [
    320934.435,
    104783.976
   ],
   "end_xy": [
    320929.545651906,
    104785.02207438818
   ]
  },
  "min_10m": {
   "gradient_pct": -2.3427795417313746,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 173.04728191741896,
   "end_elevation_m": 172.81300396324582,
   "start_xy": [
    320934.435,
    104783.976
   ],
   "end_xy": [
    320924.65626006236,
    104786.06794415839
   ]
  },
  "min_20m": {
   "gradient_pct": 1.3160447330048441,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 173.04728191741896,
   "end_elevation_m": 173.31049086401993,
   "start_xy": [
    320934.435,
    104783.976
   ],
   "end_xy": [
    320914.80934974464,
    104787.78209392578
   ]
  },
  "min_25m": {
   "gradient_pct": 1.9304509026692358,
   "start_distance_m": 570.0,
   "end_distance_m": 595.0,
   "midpoint_distance_m": 582.5,
   "start_elevation_m": 223.45910162933592,
   "end_elevation_m": 223.94171435500323,
   "start_xy": [
    320386.4276337419,
    104905.81725639782
   ],
   "end_xy": [
    320363.1157911548,
    104914.84819549102
   ]
  },
  "min_50m": {
   "gradient_pct": 2.7098895135068233,
   "start_distance_m": 565.0,
   "end_distance_m": 615.0,
   "midpoint_distance_m": 590.0,
   "start_elevation_m": 223.25912487725228,
   "end_elevation_m": 224.6140696340057,
   "start_xy": [
    320391.09002938715,
    104904.01113775883
   ],
   "end_xy": [
    320344.5657533399,
    104922.32191339556
   ]
  },
  "min_100m": {
   "gradient_pct": 4.172143443080131,
   "start_distance_m": 534.0,
   "end_distance_m": 634.0,
   "midpoint_distance_m": 584.0,
   "start_elevation_m": 221.3671539332065,
   "end_elevation_m": 225.53929737628664,
   "start_xy": [
    320419.41135563457,
    104891.42481809459
   ],
   "end_xy": [
    320326.99796817935,
    104929.55882480917
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 19.662882708919938,
   "start_distance_m": 274.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 275.0,
   "start_elevation_m": 204.99023150518622,
   "end_elevation_m": 205.38348915936461,
   "start_xy": [
    320662.40628676704,
    104814.01602741174
   ],
   "end_xy": [
    320660.4065271989,
    104814.04702209203
   ]
  },
  "max_3m": {
   "gradient_pct": 17.95724679678017,
   "start_distance_m": 273.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 274.5,
   "start_elevation_m": 204.8447717554612,
   "end_elevation_m": 205.38348915936461,
   "start_xy": [
    320663.4061742595,
    104814.00102738611
   ],
   "end_xy": [
    320660.4065271989,
    104814.04702209203
   ]
  }
 },
 "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": 0.053,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.115,
   "windows_resited": [
    2.0,
    3.0,
    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": 237.0,
     "end_m": 262.0,
     "raw_pct": 20.32,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 242.0,
     "end_m": 262.0,
     "raw_pct": 20.96,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 171.0,
     "end_m": 176.0,
     "raw_pct": 31.06,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.09,
   "obstruction_max_height_m": 7.73,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    33.0
   ],
   [
    169.0,
    178.0
   ],
   [
    235.0,
    264.0
   ]
  ],
  "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/ST2000.tif"
  ],
  "calculated_at": "2026-09-11T23:32:29+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk01.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": [
   "ST2000.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Rawridge",
  "county": "Devon"
 }
}