{
 "ocl_version": "0.1.0",
 "name": "Milladon Lane",
 "slug": "milladon-lane",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 51.72580389916028,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 142.0,
   "end_distance_m": 144.0,
   "start_elevation_m": 43.92987663637844,
   "end_elevation_m": 44.964392714361644,
   "min_gradient_pct": -25.181311191547806,
   "suppressed_max_gradient_pct": 56.24878804453033,
   "suppressed_location_m": [
    325.0,
    327.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 50.4354564557597,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 142.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 43.92987663637844,
   "end_elevation_m": 45.44294033005123,
   "min_gradient_pct": -13.345119634525085,
   "suppressed_max_gradient_pct": 54.21320368603707,
   "suppressed_location_m": [
    325.0,
    328.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 40.192189300079946,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 43.43333086504723,
   "end_elevation_m": 45.44294033005123,
   "min_gradient_pct": 3.126233414431283,
   "suppressed_max_gradient_pct": 47.71233320517041,
   "suppressed_location_m": [
    324.0,
    329.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.837845892390675,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 138.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 42.91797319503584,
   "end_elevation_m": 46.10175778427491,
   "min_gradient_pct": 4.394157819412214,
   "suppressed_max_gradient_pct": 39.87274049714941,
   "suppressed_location_m": [
    323.0,
    333.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.30724915173829,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure",
    "structure_excluded"
   ],
   "start_distance_m": 129.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 41.130016236595125,
   "end_elevation_m": 46.39146606694278,
   "min_gradient_pct": 5.470350200678631,
   "suppressed_max_gradient_pct": 28.23759093905238,
   "suppressed_location_m": [
    314.0,
    334.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.82435936279296,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 123.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 39.89566794357667,
   "end_elevation_m": 46.10175778427491,
   "min_gradient_pct": 5.66524799076447,
   "suppressed_max_gradient_pct": 25.68987916906258,
   "suppressed_location_m": [
    309.0,
    334.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.641334714369904,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 35.57079870975783,
   "end_elevation_m": 46.39146606694278,
   "min_gradient_pct": 6.831843431765903
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.910413481156418,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 35.57079870975783,
   "end_elevation_m": 55.48121219091425,
   "min_gradient_pct": 10.687851631341012
  }
 ],
 "shape": {
  "ascent_concentration": 0.331,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 185.0,
  "shape_class": "sustained"
 },
 "length_m": 335.07387818327123,
 "start_elevation_m": 25.028301203734955,
 "end_elevation_m": 77.62507474838353,
 "endpoint_gain_m": 52.59677354464857,
 "overall_gradient_pct": 15.697067712297274,
 "accumulated_ascent_m": 53.38654792007212,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 40.192189300079946,
   "start_distance_m": 140.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 142.5,
   "start_elevation_m": 43.43333086504723,
   "end_elevation_m": 45.44294033005123,
   "start_xy": [
    233136.46598339485,
    57638.187879701865
   ],
   "end_xy": [
    233131.50810515822,
    57637.54023520761
   ]
  },
  "max_10m": {
   "gradient_pct": 31.837845892390675,
   "start_distance_m": 138.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 42.91797319503584,
   "end_elevation_m": 46.10175778427491,
   "start_xy": [
    233138.4491346895,
    57638.44693749956
   ],
   "end_xy": [
    233128.53337821626,
    57637.15164851106
   ]
  },
  "max_20m": {
   "gradient_pct": 26.30724915173829,
   "start_distance_m": 129.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 139.0,
   "start_elevation_m": 41.130016236595125,
   "end_elevation_m": 46.39146606694278,
   "start_xy": [
    233147.3733155154,
    57639.61269758921
   ],
   "end_xy": [
    233127.54180256894,
    57637.022119612215
   ]
  },
  "max_25m": {
   "gradient_pct": 24.82435936279296,
   "start_distance_m": 123.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 135.5,
   "start_elevation_m": 39.89566794357667,
   "end_elevation_m": 46.10175778427491,
   "start_xy": [
    233153.32276939932,
    57640.38987098231
   ],
   "end_xy": [
    233128.53337821626,
    57637.15164851106
   ]
  },
  "max_50m": {
   "gradient_pct": 21.641334714369904,
   "start_distance_m": 99.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 124.0,
   "start_elevation_m": 35.57079870975783,
   "end_elevation_m": 46.39146606694278,
   "start_xy": [
    233177.12058493507,
    57643.498564554706
   ],
   "end_xy": [
    233127.54180256894,
    57637.022119612215
   ]
  },
  "max_100m": {
   "gradient_pct": 19.910413481156418,
   "start_distance_m": 99.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 149.0,
   "start_elevation_m": 35.57079870975783,
   "end_elevation_m": 55.48121219091425,
   "start_xy": [
    233177.12058493507,
    57643.498564554706
   ],
   "end_xy": [
    233077.65464751096,
    57635.171822206474
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 3.126233414431283,
   "start_distance_m": 149.0,
   "end_distance_m": 154.0,
   "midpoint_distance_m": 151.5,
   "start_elevation_m": 46.39146606694278,
   "end_elevation_m": 46.54777773766435,
   "start_xy": [
    233127.54180256894,
    57637.022119612215
   ],
   "end_xy": [
    233122.58392433234,
    57636.37447511797
   ]
  },
  "min_10m": {
   "gradient_pct": 4.394157819412214,
   "start_distance_m": 5.0,
   "end_distance_m": 15.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 25.48618263578866,
   "end_elevation_m": 25.92559841772988,
   "start_xy": [
    233260.43323400136,
    57683.552564816266
   ],
   "end_xy": [
    233252.30770200404,
    57677.7236944488
   ]
  },
  "min_20m": {
   "gradient_pct": 5.470350200678631,
   "start_distance_m": 5.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 15.0,
   "start_elevation_m": 25.48618263578866,
   "end_elevation_m": 26.580252675924385,
   "start_xy": [
    233260.43323400136,
    57683.552564816266
   ],
   "end_xy": [
    233244.18217000674,
    57671.89482408134
   ]
  },
  "min_25m": {
   "gradient_pct": 5.66524799076447,
   "start_distance_m": 8.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 20.5,
   "start_elevation_m": 25.650712490646754,
   "end_elevation_m": 27.06702448833787,
   "start_xy": [
    233257.99557440216,
    57681.80390370602
   ],
   "end_xy": [
    233237.68174440888,
    57667.231727787366
   ]
  },
  "min_50m": {
   "gradient_pct": 6.831843431765903,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 25.028301203734955,
   "end_elevation_m": 28.444222919617907,
   "start_xy": [
    233264.496,
    57686.467
   ],
   "end_xy": [
    233223.75611094717,
    57657.519051445954
   ]
  },
  "min_100m": {
   "gradient_pct": 10.687851631341012,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 25.028301203734955,
   "end_elevation_m": 35.71615283507597,
   "start_xy": [
    233264.496,
    57686.467
   ],
   "end_xy": [
    233176.12900928775,
    57643.36903565586
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 51.72580389916028,
   "start_distance_m": 142.0,
   "end_distance_m": 144.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 43.92987663637844,
   "end_elevation_m": 44.964392714361644,
   "start_xy": [
    233134.4828321002,
    57637.92882190416
   ],
   "end_xy": [
    233132.49968080554,
    57637.66976410647
   ]
  },
  "max_3m": {
   "gradient_pct": 50.4354564557597,
   "start_distance_m": 142.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 43.92987663637844,
   "end_elevation_m": 45.44294033005123,
   "start_xy": [
    233134.4828321002,
    57637.92882190416
   ],
   "end_xy": [
    233131.50810515822,
    57637.54023520761
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.101,
   "obstruction_max_height_m": 16.39,
   "flagged_windows_m": [
    20
   ]
  },
  "structure_suppression": {
   "masked_fraction": 0.018,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    323.0,
    328.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier",
   "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/SX3055.tif"
  ],
  "calculated_at": "2026-08-15T00:15:38+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-12-roads.osm.pbf",
  "osm_snapshot": "2026-08-12T20:21:46Z",
  "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": [
   "SX3055.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 15.9% over 200 m (Terrain 50), gain 32.5 m over 205 m way. EXTENDED by graph walk: +0 segment(s) at base, +1 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting."
 },
 "area": {
  "place": "Bake Bottoms",
  "county": "Cornwall"
 }
}