{
 "ocl_version": "0.1.0",
 "name": "Nower Road",
 "slug": "nower-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 47.03502402478534,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2070.0,
   "end_distance_m": 2072.0,
   "start_elevation_m": 163.10616095427343,
   "end_elevation_m": 164.04686143476914,
   "min_gradient_pct": -26.61761550156143,
   "suppressed_max_gradient_pct": 51.99624722278244,
   "suppressed_location_m": [
    220.0,
    222.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 40.43229954451041,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2070.0,
   "end_distance_m": 2073.0,
   "start_elevation_m": 163.10616095427343,
   "end_elevation_m": 164.31912994060875,
   "min_gradient_pct": -23.49391460399109
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 37.51112249255954,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 204.0,
   "end_distance_m": 209.0,
   "start_elevation_m": 49.757621589809226,
   "end_elevation_m": 51.6331777144372,
   "min_gradient_pct": -17.14681177253965
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 34.24147504093817,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 204.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 49.757621589809226,
   "end_elevation_m": 53.18176909390304,
   "min_gradient_pct": -11.303488374525728
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.464187966482,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 197.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 48.49908169284693,
   "end_elevation_m": 53.99191928614333,
   "min_gradient_pct": -7.860524625179863,
   "suppressed_max_gradient_pct": 28.010069570430222,
   "suppressed_location_m": [
    202.0,
    222.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.40177268336052,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 192.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 47.8914761153032,
   "end_elevation_m": 53.99191928614333,
   "min_gradient_pct": -7.502756408411869,
   "suppressed_max_gradient_pct": 25.953380622972873,
   "suppressed_location_m": [
    197.0,
    222.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.841164131971794,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 167.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 45.07133722015743,
   "end_elevation_m": 53.99191928614333,
   "min_gradient_pct": -7.314712431981889,
   "suppressed_max_gradient_pct": 18.96191042098117,
   "suppressed_location_m": [
    174.0,
    224.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.761139508360479,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 117.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 40.23077977778285,
   "end_elevation_m": 53.99191928614333,
   "min_gradient_pct": -6.492127851679555,
   "suppressed_max_gradient_pct": 14.479306330658403,
   "suppressed_location_m": [
    135.0,
    235.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.34,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 59.0,
  "shape_class": "sustained"
 },
 "length_m": 2675.3064485686687,
 "start_elevation_m": 34.200463675355564,
 "end_elevation_m": 156.5650973510742,
 "endpoint_gain_m": 122.36463367571864,
 "overall_gradient_pct": 4.573854847215191,
 "accumulated_ascent_m": 144.89294220938598,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 37.51112249255954,
   "start_distance_m": 204.0,
   "end_distance_m": 209.0,
   "midpoint_distance_m": 206.5,
   "start_elevation_m": 49.757621589809226,
   "end_elevation_m": 51.6331777144372,
   "start_xy": [
    326968.42586991854,
    99271.67378430236
   ],
   "end_xy": [
    326968.96331912745,
    99276.64481521635
   ]
  },
  "max_10m": {
   "gradient_pct": 34.24147504093817,
   "start_distance_m": 204.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 209.0,
   "start_elevation_m": 49.757621589809226,
   "end_elevation_m": 53.18176909390304,
   "start_xy": [
    326968.42586991854,
    99271.67378430236
   ],
   "end_xy": [
    326969.5007683363,
    99281.61584613034
   ]
  },
  "max_20m": {
   "gradient_pct": 27.464187966482,
   "start_distance_m": 197.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 207.0,
   "start_elevation_m": 48.49908169284693,
   "end_elevation_m": 53.99191928614333,
   "start_xy": [
    326967.6734410261,
    99264.71434102276
   ],
   "end_xy": [
    326969.8232378616,
    99284.59846467873
   ]
  },
  "max_25m": {
   "gradient_pct": 24.40177268336052,
   "start_distance_m": 192.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 204.5,
   "start_elevation_m": 47.8914761153032,
   "end_elevation_m": 53.99191928614333,
   "start_xy": [
    326967.3055437696,
    99259.7329775648
   ],
   "end_xy": [
    326969.8232378616,
    99284.59846467873
   ]
  },
  "max_50m": {
   "gradient_pct": 17.841164131971794,
   "start_distance_m": 167.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 192.0,
   "start_elevation_m": 45.07133722015743,
   "end_elevation_m": 53.99191928614333,
   "start_xy": [
    326966.95475257013,
    99234.73543877527
   ],
   "end_xy": [
    326969.8232378616,
    99284.59846467873
   ]
  },
  "max_100m": {
   "gradient_pct": 13.761139508360479,
   "start_distance_m": 117.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 167.0,
   "start_elevation_m": 40.23077977778285,
   "end_elevation_m": 53.99191928614333,
   "start_xy": [
    326968.24196727236,
    99184.77335260849
   ],
   "end_xy": [
    326969.8232378616,
    99284.59846467873
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.14681177253965,
   "start_distance_m": 2271.0,
   "end_distance_m": 2276.0,
   "midpoint_distance_m": 2273.5,
   "start_elevation_m": 158.57908943008613,
   "end_elevation_m": 157.72174884145915,
   "start_xy": [
    325663.065212576,
    100430.94820322546
   ],
   "end_xy": [
    325660.63196073764,
    100435.31341873013
   ]
  },
  "min_10m": {
   "gradient_pct": -11.303488374525728,
   "start_distance_m": 2266.0,
   "end_distance_m": 2276.0,
   "midpoint_distance_m": 2271.0,
   "start_elevation_m": 158.85209767891172,
   "end_elevation_m": 157.72174884145915,
   "start_xy": [
    325665.04476684064,
    100426.35675847316
   ],
   "end_xy": [
    325660.63196073764,
    100435.31341873013
   ]
  },
  "min_20m": {
   "gradient_pct": -7.860524625179863,
   "start_distance_m": 2213.0,
   "end_distance_m": 2233.0,
   "midpoint_distance_m": 2223.0,
   "start_elevation_m": 161.8316537619406,
   "end_elevation_m": 160.25954883690463,
   "start_xy": [
    325693.6429397896,
    100382.4470785783
   ],
   "end_xy": [
    325680.17926834105,
    100397.07616565144
   ]
  },
  "min_25m": {
   "gradient_pct": -7.502756408411869,
   "start_distance_m": 2182.0,
   "end_distance_m": 2207.0,
   "midpoint_distance_m": 2194.5,
   "start_elevation_m": 163.9846036640707,
   "end_elevation_m": 162.10891456196774,
   "start_xy": [
    325722.1429985678,
    100371.55069595709
   ],
   "end_xy": [
    325698.578113888,
    100379.20602549268
   ]
  },
  "min_50m": {
   "gradient_pct": -7.314712431981889,
   "start_distance_m": 2182.0,
   "end_distance_m": 2232.0,
   "midpoint_distance_m": 2207.0,
   "start_elevation_m": 163.9846036640707,
   "end_elevation_m": 160.32724744807976,
   "start_xy": [
    325722.1429985678,
    100371.55069595709
   ],
   "end_xy": [
    325680.6684121708,
    100396.2039625135
   ]
  },
  "min_100m": {
   "gradient_pct": -6.492127851679555,
   "start_distance_m": 2176.0,
   "end_distance_m": 2276.0,
   "midpoint_distance_m": 2226.0,
   "start_elevation_m": 164.2138766931387,
   "end_elevation_m": 157.72174884145915,
   "start_xy": [
    325728.083667084,
    100370.70899673499
   ],
   "end_xy": [
    325660.63196073764,
    100435.31341873013
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 47.03502402478534,
   "start_distance_m": 2070.0,
   "end_distance_m": 2072.0,
   "midpoint_distance_m": 2071.0,
   "start_elevation_m": 163.10616095427343,
   "end_elevation_m": 164.04686143476914,
   "start_xy": [
    325830.1497601867,
    100355.43523982223
   ],
   "end_xy": [
    325828.3680194461,
    100356.34375505788
   ]
  },
  "max_3m": {
   "gradient_pct": 40.43229954451041,
   "start_distance_m": 2070.0,
   "end_distance_m": 2073.0,
   "midpoint_distance_m": 2071.5,
   "start_elevation_m": 163.10616095427343,
   "end_elevation_m": 164.31912994060875,
   "start_xy": [
    325830.1497601867,
    100355.43523982223
   ],
   "end_xy": [
    325827.4771490758,
    100356.7980126757
   ]
  }
 },
 "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": 0.031,
   "obstruction_max_height_m": 12.35,
   "flagged_windows_m": []
  },
  "structure_suppression": {
   "masked_fraction": 0.002,
   "windows_resited": [
    2.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    218.0,
    223.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_end"
  ],
  "suggested_summit_cut_m": 2110.0,
  "trailing_descent_m": 9.7
 },
 "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/SY2595.tif",
   "data/cache/england/bulk_dtm_1m/ST2500.tif"
  ],
  "calculated_at": "2026-08-15T05:26:55+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": [
   "SY2595.tif",
   "ST2500.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 8.2% over 200 m (Terrain 50), gain 82.9 m over 1971 m way. EXTENDED by graph walk: +1 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 2 overlapping proposal(s): discovered-lane-50-7898-3-0370, discovered-lane-50-7919-3-0463"
 },
 "area": {
  "place": "Dalwood",
  "county": "Devon"
 }
}