{
 "ocl_version": "0.1.0",
 "name": "Mannacott Lane",
 "slug": "mannacott-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 55.425622705320166,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 812.0,
   "end_distance_m": 814.0,
   "start_elevation_m": 173.89219049136835,
   "end_elevation_m": 175.00070294547476,
   "min_gradient_pct": -27.01133424318556,
   "suppressed_max_gradient_pct": 69.30095119752337,
   "suppressed_location_m": [
    215.0,
    217.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 39.79111461086973,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 812.0,
   "end_distance_m": 815.0,
   "start_elevation_m": 173.89219049136835,
   "end_elevation_m": 175.08592392969445,
   "min_gradient_pct": -10.306667683884521,
   "suppressed_max_gradient_pct": 64.95473710242929,
   "suppressed_location_m": [
    214.0,
    217.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.48889608661318,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 175.0,
   "end_distance_m": 180.0,
   "start_elevation_m": 68.17770320375713,
   "end_elevation_m": 69.90214800808779,
   "min_gradient_pct": -5.497931823456952,
   "suppressed_max_gradient_pct": 53.681312229932416,
   "suppressed_location_m": [
    214.0,
    219.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.307632175006347,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 172.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 67.31677561222413,
   "end_elevation_m": 70.34753882972477,
   "min_gradient_pct": -1.7748814996620865,
   "suppressed_max_gradient_pct": 42.05346753260187,
   "suppressed_location_m": [
    210.0,
    220.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.72799477231345,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 64.80193987526208,
   "end_elevation_m": 70.34753882972477,
   "min_gradient_pct": -0.7225266476882553,
   "suppressed_max_gradient_pct": 31.02026475904097,
   "suppressed_location_m": [
    203.0,
    223.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.958830876486953,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 165.0,
   "end_distance_m": 190.0,
   "start_elevation_m": 65.54917309680715,
   "end_elevation_m": 72.28888081592889,
   "min_gradient_pct": -0.66473145067323,
   "suppressed_max_gradient_pct": 29.06961551512808,
   "suppressed_location_m": [
    211.0,
    236.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.324094764236648,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 190.0,
   "start_elevation_m": 60.62683343381057,
   "end_elevation_m": 72.28888081592889,
   "min_gradient_pct": 0.4752968308072809,
   "suppressed_max_gradient_pct": 26.40622122486712,
   "suppressed_location_m": [
    170.0,
    220.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.517932523135745,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 92.0,
   "end_distance_m": 192.0,
   "start_elevation_m": 50.088845946349686,
   "end_elevation_m": 72.60677846948543,
   "min_gradient_pct": 3.3613787088552556,
   "suppressed_max_gradient_pct": 24.608395871007062,
   "suppressed_location_m": [
    156.0,
    256.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.346,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 368.0,
  "shape_class": "sustained"
 },
 "length_m": 1412.3036805285763,
 "start_elevation_m": 44.61516208221409,
 "end_elevation_m": 239.36325611297553,
 "endpoint_gain_m": 194.74809403076145,
 "overall_gradient_pct": 13.789392233111933,
 "accumulated_ascent_m": 197.425889470781,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.48889608661318,
   "start_distance_m": 175.0,
   "end_distance_m": 180.0,
   "midpoint_distance_m": 177.5,
   "start_elevation_m": 68.17770320375713,
   "end_elevation_m": 69.90214800808779,
   "start_xy": [
    265597.6200929094,
    148160.31801530073
   ],
   "end_xy": [
    265602.61965023127,
    148160.38450845302
   ]
  },
  "max_10m": {
   "gradient_pct": 30.307632175006347,
   "start_distance_m": 172.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 177.0,
   "start_elevation_m": 67.31677561222413,
   "end_elevation_m": 70.34753882972477,
   "start_xy": [
    265594.6203532252,
    148160.27851110304
   ],
   "end_xy": [
    265604.6194812527,
    148160.41050625627
   ]
  },
  "max_20m": {
   "gradient_pct": 27.72799477231345,
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 64.80193987526208,
   "end_elevation_m": 70.34753882972477,
   "start_xy": [
    265584.6212386957,
    148160.14551610305
   ],
   "end_xy": [
    265604.6194812527,
    148160.41050625627
   ]
  },
  "max_25m": {
   "gradient_pct": 26.958830876486953,
   "start_distance_m": 165.0,
   "end_distance_m": 190.0,
   "midpoint_distance_m": 177.5,
   "start_elevation_m": 65.54917309680715,
   "end_elevation_m": 72.28888081592889,
   "start_xy": [
    265587.6209717302,
    148160.1855126325
   ],
   "end_xy": [
    265612.61877817404,
    148160.51651011626
   ]
  },
  "max_50m": {
   "gradient_pct": 23.324094764236648,
   "start_distance_m": 140.0,
   "end_distance_m": 190.0,
   "midpoint_distance_m": 165.0,
   "start_elevation_m": 60.62683343381057,
   "end_elevation_m": 72.28888081592889,
   "start_xy": [
    265562.6857496196,
    148158.80178053875
   ],
   "end_xy": [
    265612.61877817404,
    148160.51651011626
   ]
  },
  "max_100m": {
   "gradient_pct": 22.517932523135745,
   "start_distance_m": 92.0,
   "end_distance_m": 192.0,
   "midpoint_distance_m": 142.0,
   "start_elevation_m": 50.088845946349686,
   "end_elevation_m": 72.60677846948543,
   "start_xy": [
    265518.1459390534,
    148148.0378679198
   ],
   "end_xy": [
    265614.6185956978,
    148160.54350774406
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.497931823456952,
   "start_distance_m": 893.0,
   "end_distance_m": 898.0,
   "midpoint_distance_m": 895.5,
   "start_elevation_m": 187.43723020305927,
   "end_elevation_m": 187.16233361188642,
   "start_xy": [
    266200.52220783825,
    147971.42268441455
   ],
   "end_xy": [
    266201.2503000788,
    147966.47598084182
   ]
  },
  "min_10m": {
   "gradient_pct": -1.7748814996620865,
   "start_distance_m": 56.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 61.0,
   "start_elevation_m": 46.8436008032009,
   "end_elevation_m": 46.66611265323469,
   "start_xy": [
    265501.50461344235,
    148130.66600959646
   ],
   "end_xy": [
    265508.3154052274,
    148124.62787363655
   ]
  },
  "min_20m": {
   "gradient_pct": -0.7225266476882553,
   "start_distance_m": 993.0,
   "end_distance_m": 1013.0,
   "midpoint_distance_m": 1003.0,
   "start_elevation_m": 198.63122668621997,
   "end_elevation_m": 198.48672135668232,
   "start_xy": [
    266181.5425100766,
    147875.0865266712
   ],
   "end_xy": [
    266195.12948854145,
    147860.7775329263
   ]
  },
  "min_25m": {
   "gradient_pct": -0.66473145067323,
   "start_distance_m": 992.0,
   "end_distance_m": 1017.0,
   "midpoint_distance_m": 1004.5,
   "start_elevation_m": 198.62835251491933,
   "end_elevation_m": 198.46216965225102,
   "start_xy": [
    266181.5074536222,
    147876.08591198424
   ],
   "end_xy": [
    266198.37146886863,
    147858.434551471
   ]
  },
  "min_50m": {
   "gradient_pct": 0.4752968308072809,
   "start_distance_m": 988.0,
   "end_distance_m": 1038.0,
   "midpoint_distance_m": 1013.0,
   "start_elevation_m": 198.57815027173766,
   "end_elevation_m": 198.8157986871413,
   "start_xy": [
    266181.3664800674,
    147880.08342664628
   ],
   "end_xy": [
    266217.3915325088,
    147850.4393543823
   ]
  },
  "min_100m": {
   "gradient_pct": 3.3613787088552556,
   "start_distance_m": 957.0,
   "end_distance_m": 1057.0,
   "midpoint_distance_m": 1007.0,
   "start_elevation_m": 196.51396342049802,
   "end_elevation_m": 199.87534212935327,
   "start_xy": [
    266185.58515753405,
    147910.39717858445
   ],
   "end_xy": [
    266236.01867411885,
    147853.02695562094
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 55.425622705320166,
   "start_distance_m": 812.0,
   "end_distance_m": 814.0,
   "midpoint_distance_m": 813.0,
   "start_elevation_m": 173.89219049136835,
   "end_elevation_m": 175.00070294547476,
   "start_xy": [
    266190.17747267266,
    148045.16057597974
   ],
   "end_xy": [
    266192.11548840546,
    148045.51414314142
   ]
  },
  "max_3m": {
   "gradient_pct": 39.79111461086973,
   "start_distance_m": 812.0,
   "end_distance_m": 815.0,
   "midpoint_distance_m": 813.5,
   "start_elevation_m": 173.89219049136835,
   "end_elevation_m": 175.08592392969445,
   "start_xy": [
    266190.17747267266,
    148045.16057597974
   ],
   "end_xy": [
    266193.1099554174,
    148045.61919247368
   ]
  }
 },
 "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": 0.119,
   "obstruction_max_height_m": 26.27,
   "flagged_windows_m": []
  },
  "structure_suppression": {
   "masked_fraction": 0.027,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.049,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    213.0,
    218.0
   ],
   [
    451.0,
    476.0
   ],
   [
    520.0,
    550.0
   ],
   [
    805.0,
    810.0
   ]
  ],
  "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/SS6545.tif"
  ],
  "calculated_at": "2026-08-19T18:40:41+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-12.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": [
   "SS6545.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 13.1% over 200 m (Terrain 50), gain 60.5 m over 547 m way. EXTENDED by graph walk: +6 segment(s) at base, +1 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 2 overlapping proposal(s): king-s-lane, king-s-lane-2 ADOPTED (England launch slice 2026-08-16): qualified-steep."
 },
 "area": {
  "place": "Trentishoe",
  "county": "Devon"
 }
}