{
 "ocl_version": "0.1.0",
 "name": "Binweston Lane",
 "slug": "binweston-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 42.12968337422325,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure",
    "structure_excluded"
   ],
   "start_distance_m": 1252.0,
   "end_distance_m": 1254.0,
   "start_elevation_m": 166.23913143487266,
   "end_elevation_m": 167.08172510235713,
   "min_gradient_pct": -27.87590021262787,
   "suppressed_max_gradient_pct": 83.13998609289968,
   "suppressed_location_m": [
    847.0,
    849.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 37.66609798357384,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure",
    "structure_excluded"
   ],
   "start_distance_m": 1252.0,
   "end_distance_m": 1255.0,
   "start_elevation_m": 166.23913143487266,
   "end_elevation_m": 167.36911437437988,
   "min_gradient_pct": -24.976624283081605,
   "suppressed_max_gradient_pct": 72.46537285809514,
   "suppressed_location_m": [
    846.0,
    849.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 35.20006565858182,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure",
    "structure_excluded"
   ],
   "start_distance_m": 1234.0,
   "end_distance_m": 1239.0,
   "start_elevation_m": 162.93647670352638,
   "end_elevation_m": 164.69647998645547,
   "min_gradient_pct": -17.377231756140077,
   "suppressed_max_gradient_pct": 53.8313379007468,
   "suppressed_location_m": [
    845.0,
    850.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.781446859445282,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure",
    "structure_excluded"
   ],
   "start_distance_m": 1234.0,
   "end_distance_m": 1244.0,
   "start_elevation_m": 162.93647670352638,
   "end_elevation_m": 165.9146213894709,
   "min_gradient_pct": -9.454437520373062,
   "suppressed_max_gradient_pct": 36.31494981537202,
   "suppressed_location_m": [
    843.0,
    853.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.492283948004513,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1225.0,
   "end_distance_m": 1245.0,
   "start_elevation_m": 160.9762495605194,
   "end_elevation_m": 166.0747063501203,
   "min_gradient_pct": -4.808931525074627
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.387167970754945,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1221.0,
   "end_distance_m": 1246.0,
   "start_elevation_m": 160.64269296847368,
   "end_elevation_m": 166.23948496116242,
   "min_gradient_pct": -4.626649172172165
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.33079226033078,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3402.0,
   "end_distance_m": 3452.0,
   "start_elevation_m": 292.81828880403486,
   "end_elevation_m": 301.98368493420026,
   "min_gradient_pct": -4.465617841886342
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.304525397081647,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3411.0,
   "end_distance_m": 3511.0,
   "start_elevation_m": 294.3143473860978,
   "end_elevation_m": 311.6188727831794,
   "min_gradient_pct": -3.900468496862345
  }
 ],
 "shape": {
  "ascent_concentration": 0.363,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 153.0,
  "shape_class": "sustained"
 },
 "length_m": 4862.120048876399,
 "start_elevation_m": 109.49059315310646,
 "end_elevation_m": 382.29944287206814,
 "endpoint_gain_m": 272.8088497189617,
 "overall_gradient_pct": 5.610903206349376,
 "accumulated_ascent_m": 311.0666865587616,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 35.20006565858182,
   "start_distance_m": 1234.0,
   "end_distance_m": 1239.0,
   "midpoint_distance_m": 1236.5,
   "start_elevation_m": 162.93647670352638,
   "end_elevation_m": 164.69647998645547,
   "start_xy": [
    329529.8653329727,
    304606.49004430027
   ],
   "end_xy": [
    329526.7400526304,
    304610.39294357924
   ]
  },
  "max_10m": {
   "gradient_pct": 29.781446859445282,
   "start_distance_m": 1234.0,
   "end_distance_m": 1244.0,
   "midpoint_distance_m": 1239.0,
   "start_elevation_m": 162.93647670352638,
   "end_elevation_m": 165.9146213894709,
   "start_xy": [
    329529.8653329727,
    304606.49004430027
   ],
   "end_xy": [
    329523.61477228807,
    304614.2958428582
   ]
  },
  "max_20m": {
   "gradient_pct": 25.492283948004513,
   "start_distance_m": 1225.0,
   "end_distance_m": 1245.0,
   "midpoint_distance_m": 1235.0,
   "start_elevation_m": 160.9762495605194,
   "end_elevation_m": 166.0747063501203,
   "start_xy": [
    329535.4908375889,
    304599.46482559806
   ],
   "end_xy": [
    329522.98971621966,
    304615.07642271405
   ]
  },
  "max_25m": {
   "gradient_pct": 22.387167970754945,
   "start_distance_m": 1221.0,
   "end_distance_m": 1246.0,
   "midpoint_distance_m": 1233.5,
   "start_elevation_m": 160.64269296847368,
   "end_elevation_m": 166.23948496116242,
   "start_xy": [
    329537.99106186273,
    304596.3425061749
   ],
   "end_xy": [
    329522.3646601512,
    304615.8570025698
   ]
  },
  "max_50m": {
   "gradient_pct": 18.33079226033078,
   "start_distance_m": 3402.0,
   "end_distance_m": 3452.0,
   "midpoint_distance_m": 3427.0,
   "start_elevation_m": 292.81828880403486,
   "end_elevation_m": 301.98368493420026,
   "start_xy": [
    327674.7956137466,
    304345.8544726064
   ],
   "end_xy": [
    327650.3726175896,
    304389.48365280085
   ]
  },
  "max_100m": {
   "gradient_pct": 17.304525397081647,
   "start_distance_m": 3411.0,
   "end_distance_m": 3511.0,
   "midpoint_distance_m": 3461.0,
   "start_elevation_m": 294.3143473860978,
   "end_elevation_m": 311.6188727831794,
   "start_xy": [
    327670.42603034625,
    304353.7224917904
   ],
   "end_xy": [
    327623.3760559628,
    304441.75497593154
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.377231756140077,
   "start_distance_m": 970.0,
   "end_distance_m": 975.0,
   "midpoint_distance_m": 972.5,
   "start_elevation_m": 147.4655898413473,
   "end_elevation_m": 146.5967282535403,
   "start_xy": [
    329718.2824631846,
    304424.096886491
   ],
   "end_xy": [
    329714.3429833506,
    304427.17592832854
   ]
  },
  "min_10m": {
   "gradient_pct": -9.454437520373062,
   "start_distance_m": 3358.0,
   "end_distance_m": 3368.0,
   "midpoint_distance_m": 3363.0,
   "start_elevation_m": 289.077562503852,
   "end_elevation_m": 288.1321187518147,
   "start_xy": [
    327698.89693429315,
    304315.29673131777
   ],
   "end_xy": [
    327688.8972388374,
    304315.37477484037
   ]
  },
  "min_20m": {
   "gradient_pct": -4.808931525074627,
   "start_distance_m": 1263.0,
   "end_distance_m": 1283.0,
   "midpoint_distance_m": 1273.0,
   "start_elevation_m": 167.8158528600193,
   "end_elevation_m": 166.85406655500438,
   "start_xy": [
    329512.7944355573,
    304629.9069167298
   ],
   "end_xy": [
    329501.5430703237,
    304646.44193352386
   ]
  },
  "min_25m": {
   "gradient_pct": -4.626649172172165,
   "start_distance_m": 2808.0,
   "end_distance_m": 2833.0,
   "midpoint_distance_m": 2820.5,
   "start_elevation_m": 278.2816152463201,
   "end_elevation_m": 277.12495295327705,
   "start_xy": [
    328197.35945385776,
    304465.003958561
   ],
   "end_xy": [
    328179.42398154276,
    304447.5879075494
   ]
  },
  "min_50m": {
   "gradient_pct": -4.465617841886342,
   "start_distance_m": 2785.0,
   "end_distance_m": 2835.0,
   "midpoint_distance_m": 2810.0,
   "start_elevation_m": 279.2929364920037,
   "end_elevation_m": 277.06012757106055,
   "start_xy": [
    328213.7791532112,
    304481.1096515098
   ],
   "end_xy": [
    328177.98914375756,
    304446.19462346844
   ]
  },
  "min_100m": {
   "gradient_pct": -3.900468496862345,
   "start_distance_m": 2736.0,
   "end_distance_m": 2836.0,
   "midpoint_distance_m": 2786.0,
   "start_elevation_m": 280.9270040644106,
   "end_elevation_m": 277.02653556754825,
   "start_xy": [
    328249.2201611656,
    304514.94571725925
   ],
   "end_xy": [
    328177.1770136402,
    304445.62063599343
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 42.12968337422325,
   "start_distance_m": 1252.0,
   "end_distance_m": 1254.0,
   "midpoint_distance_m": 1253.0,
   "start_elevation_m": 166.23913143487266,
   "end_elevation_m": 167.08172510235713,
   "start_xy": [
    329518.9826864358,
    304620.8126574931
   ],
   "end_xy": [
    329517.85754991247,
    304622.46615917253
   ]
  },
  "max_3m": {
   "gradient_pct": 37.66609798357384,
   "start_distance_m": 1252.0,
   "end_distance_m": 1255.0,
   "midpoint_distance_m": 1253.5,
   "start_elevation_m": 166.23913143487266,
   "end_elevation_m": 167.36911437437988,
   "start_xy": [
    329518.9826864358,
    304620.8126574931
   ],
   "end_xy": [
    329517.2949816508,
    304623.2929100122
   ]
  }
 },
 "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": 0.058,
   "obstruction_max_height_m": 12.75,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    25
   ]
  },
  "structure_suppression": {
   "masked_fraction": 0.003,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    845.0,
    851.0
   ],
   [
    901.0,
    906.0
   ]
  ],
  "review": [],
  "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/SJ2500.tif",
   "data/cache/england/bulk_dtm_1m/SJ3000.tif",
   "data/cache/england/bulk_dtm_1m/SJ2505.tif"
  ],
  "calculated_at": "2026-08-15T15:02:30+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": [
   "SJ2500.tif",
   "SJ3000.tif",
   "SJ2505.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 13.6% over 200 m (Terrain 50), gain 143.5 m over 2260 m way. EXTENDED by graph walk: +0 segment(s) at base, +4 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting."
 },
 "area": {
  "place": "Flying Dingle",
  "county": "Shropshire"
 }
}