{
 "ocl_version": "0.1.0",
 "name": "Doctors Hill",
 "slug": "doctors-hill",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 49.725840049038794,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 639.0,
   "end_distance_m": 641.0,
   "start_elevation_m": 111.29642137137274,
   "end_elevation_m": 112.29093817235352,
   "min_gradient_pct": -6.206746470418523
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 48.20036381519183,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 639.0,
   "end_distance_m": 642.0,
   "start_elevation_m": 111.29642137137274,
   "end_elevation_m": 112.7424322858285,
   "min_gradient_pct": -4.685353345737535
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 41.454539928174654,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 638.0,
   "end_distance_m": 643.0,
   "start_elevation_m": 110.97750450940259,
   "end_elevation_m": 113.05023150581133,
   "min_gradient_pct": -2.983705507125478
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 34.65478987709517,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 607.0,
   "end_distance_m": 617.0,
   "start_elevation_m": 105.54605606067989,
   "end_elevation_m": 109.0115350483894,
   "min_gradient_pct": -1.3874523283845974
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.74853695664707,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 598.0,
   "end_distance_m": 618.0,
   "start_elevation_m": 104.06573448244504,
   "end_elevation_m": 109.21544187377445,
   "min_gradient_pct": -0.0918932534929695
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.01162999312828,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 600.0,
   "end_distance_m": 625.0,
   "start_elevation_m": 104.19245457260884,
   "end_elevation_m": 110.19536207089091,
   "min_gradient_pct": -0.0611523906735556
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.146204293458652,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 600.0,
   "end_distance_m": 650.0,
   "start_elevation_m": 104.19245457260884,
   "end_elevation_m": 113.76555671933816,
   "min_gradient_pct": 0.4974993365756859
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.859920293934266,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 602.0,
   "end_distance_m": 702.0,
   "start_elevation_m": 104.43847918143203,
   "end_elevation_m": 121.2983994753663,
   "min_gradient_pct": 1.2079157569168473
  }
 ],
 "shape": {
  "ascent_concentration": 0.459,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 120.0,
  "shape_class": "stepped"
 },
 "length_m": 799.4230464657203,
 "start_elevation_m": 65.4315156793505,
 "end_elevation_m": 131.02608376606537,
 "endpoint_gain_m": 65.59456808671487,
 "overall_gradient_pct": 8.205238562574715,
 "accumulated_ascent_m": 66.46541163175758,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 41.454539928174654,
   "start_distance_m": 638.0,
   "end_distance_m": 643.0,
   "midpoint_distance_m": 640.5,
   "start_elevation_m": 110.97750450940259,
   "end_elevation_m": 113.05023150581133,
   "start_xy": [
    381672.48588866694,
    167916.99389635387
   ],
   "end_xy": [
    381673.6689573736,
    167912.13587737124
   ]
  },
  "max_10m": {
   "gradient_pct": 34.65478987709517,
   "start_distance_m": 607.0,
   "end_distance_m": 617.0,
   "midpoint_distance_m": 612.0,
   "start_elevation_m": 105.54605606067989,
   "end_elevation_m": 109.0115350483894,
   "start_xy": [
    381665.15086268575,
    167947.11361404601
   ],
   "end_xy": [
    381667.51700009906,
    167937.3975760808
   ]
  },
  "max_20m": {
   "gradient_pct": 25.74853695664707,
   "start_distance_m": 598.0,
   "end_distance_m": 618.0,
   "midpoint_distance_m": 608.0,
   "start_elevation_m": 104.06573448244504,
   "end_elevation_m": 109.21544187377445,
   "start_xy": [
    381663.0213390138,
    167955.85804821472
   ],
   "end_xy": [
    381667.7536138404,
    167936.42597228428
   ]
  },
  "max_25m": {
   "gradient_pct": 24.01162999312828,
   "start_distance_m": 600.0,
   "end_distance_m": 625.0,
   "midpoint_distance_m": 612.5,
   "start_elevation_m": 104.19245457260884,
   "end_elevation_m": 110.19536207089091,
   "start_xy": [
    381663.49456649646,
    167953.91484062167
   ],
   "end_xy": [
    381669.4099100297,
    167929.62474570863
   ]
  },
  "max_50m": {
   "gradient_pct": 19.146204293458652,
   "start_distance_m": 600.0,
   "end_distance_m": 650.0,
   "midpoint_distance_m": 625.0,
   "start_elevation_m": 104.19245457260884,
   "end_elevation_m": 113.76555671933816,
   "start_xy": [
    381663.49456649646,
    167953.91484062167
   ],
   "end_xy": [
    381675.3252535629,
    167905.33465079562
   ]
  },
  "max_100m": {
   "gradient_pct": 16.859920293934266,
   "start_distance_m": 602.0,
   "end_distance_m": 702.0,
   "midpoint_distance_m": 652.0,
   "start_elevation_m": 104.43847918143203,
   "end_elevation_m": 121.2983994753663,
   "start_xy": [
    381663.96779397916,
    167951.97163302865
   ],
   "end_xy": [
    381687.6291681119,
    167854.81125337648
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.983705507125478,
   "start_distance_m": 227.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 229.5,
   "start_elevation_m": 77.07435034973062,
   "end_elevation_m": 76.92516507437435,
   "start_xy": [
    381505.21792206436,
    168257.75401922566
   ],
   "end_xy": [
    381509.00852718076,
    168254.4934498196
   ]
  },
  "min_10m": {
   "gradient_pct": -1.3874523283845974,
   "start_distance_m": 222.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 227.0,
   "start_elevation_m": 77.06391030721281,
   "end_elevation_m": 76.92516507437435,
   "start_xy": [
    381501.427316948,
    168261.01458863175
   ],
   "end_xy": [
    381509.00852718076,
    168254.4934498196
   ]
  },
  "min_20m": {
   "gradient_pct": -0.0918932534929695,
   "start_distance_m": 302.0,
   "end_distance_m": 322.0,
   "midpoint_distance_m": 312.0,
   "start_elevation_m": 79.02312619117268,
   "end_elevation_m": 79.00474754047409,
   "start_xy": [
    381562.07699880976,
    168208.84547813452
   ],
   "end_xy": [
    381577.2394192752,
    168195.8032005102
   ]
  },
  "min_25m": {
   "gradient_pct": -0.0611523906735556,
   "start_distance_m": 297.0,
   "end_distance_m": 322.0,
   "midpoint_distance_m": 309.5,
   "start_elevation_m": 79.02003563814247,
   "end_elevation_m": 79.00474754047409,
   "start_xy": [
    381558.2863936934,
    168212.1060475406
   ],
   "end_xy": [
    381577.2394192752,
    168195.8032005102
   ]
  },
  "min_50m": {
   "gradient_pct": 0.4974993365756859,
   "start_distance_m": 292.0,
   "end_distance_m": 342.0,
   "midpoint_distance_m": 317.0,
   "start_elevation_m": 78.99607912479857,
   "end_elevation_m": 79.24482879308641,
   "start_xy": [
    381554.4957885771,
    168215.36661694667
   ],
   "end_xy": [
    381592.40183974063,
    168182.76092288594
   ]
  },
  "min_100m": {
   "gradient_pct": 1.2079157569168473,
   "start_distance_m": 286.0,
   "end_distance_m": 386.0,
   "midpoint_distance_m": 336.0,
   "start_elevation_m": 78.8585751967169,
   "end_elevation_m": 80.06649095363375,
   "start_xy": [
    381549.9470624374,
    168219.27930023396
   ],
   "end_xy": [
    381625.0989203289,
    168153.45555160296
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 49.725840049038794,
   "start_distance_m": 639.0,
   "end_distance_m": 641.0,
   "midpoint_distance_m": 640.0,
   "start_elevation_m": 111.29642137137274,
   "end_elevation_m": 112.29093817235352,
   "start_xy": [
    381672.72250240826,
    167916.02229255735
   ],
   "end_xy": [
    381673.1957298909,
    167914.0790849643
   ]
  },
  "max_3m": {
   "gradient_pct": 48.20036381519183,
   "start_distance_m": 639.0,
   "end_distance_m": 642.0,
   "midpoint_distance_m": 640.5,
   "start_elevation_m": 111.29642137137274,
   "end_elevation_m": 112.7424322858285,
   "start_xy": [
    381672.72250240826,
    167916.02229255735
   ],
   "end_xy": [
    381673.4323436322,
    167913.10748116777
   ]
  }
 },
 "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": 0.07,
   "obstruction_max_height_m": 18.63,
   "flagged_windows_m": [
    25,
    50,
    100
   ]
  },
  "review": [],
  "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/ST8065.tif"
  ],
  "calculated_at": "2026-08-30T05:35:58+00:00",
  "road_source": "routes/doctors-hill-trim.geojson",
  "run_id": "downe-trim-260830",
  "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": [
   "ST8065.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Ashley",
  "county": "Wiltshire"
 }
}