{
 "ocl_version": "0.1.0",
 "name": "Whiterock Road",
 "slug": "whiterock-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 44.22123303418317,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 630.0,
   "end_distance_m": 632.0,
   "start_elevation_m": 149.65965593480286,
   "end_elevation_m": 150.54408059548652,
   "min_gradient_pct": -0.9630179858987731
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 40.82078321675814,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 630.0,
   "end_distance_m": 633.0,
   "start_elevation_m": 149.65965593480286,
   "end_elevation_m": 150.8842794313056,
   "min_gradient_pct": 0.8814464889013607
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 38.772282923225134,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 628.0,
   "end_distance_m": 633.0,
   "start_elevation_m": 148.94566528514434,
   "end_elevation_m": 150.8842794313056,
   "min_gradient_pct": 1.469749208937401
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 34.53041110495093,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 628.0,
   "end_distance_m": 638.0,
   "start_elevation_m": 148.94566528514434,
   "end_elevation_m": 152.39870639563944,
   "min_gradient_pct": 3.0048932318668164
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 32.82854514915627,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 619.0,
   "end_distance_m": 639.0,
   "start_elevation_m": 146.16255562156408,
   "end_elevation_m": 152.72826465139534,
   "min_gradient_pct": 4.099679197445596
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 31.27465654183618,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 616.0,
   "end_distance_m": 641.0,
   "start_elevation_m": 145.32264938593914,
   "end_elevation_m": 153.1413135213982,
   "min_gradient_pct": 4.300881929614604
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 27.052748186519974,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 611.0,
   "end_distance_m": 661.0,
   "start_elevation_m": 144.21228612677697,
   "end_elevation_m": 157.73866022003696,
   "min_gradient_pct": 4.803426255141346
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 24.198741359288107,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 598.0,
   "end_distance_m": 698.0,
   "start_elevation_m": 141.4517671534125,
   "end_elevation_m": 165.6505085127006,
   "min_gradient_pct": 5.272710891950269
  }
 ],
 "shape": {
  "ascent_concentration": 0.38,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 197.0,
  "shape_class": "sustained"
 },
 "length_m": 750.673755176755,
 "start_elevation_m": 76.75124159240676,
 "end_elevation_m": 173.36828509008538,
 "endpoint_gain_m": 96.61704349767862,
 "overall_gradient_pct": 12.870710189532202,
 "accumulated_ascent_m": 96.68207327977191,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 38.772282923225134,
   "start_distance_m": 628.0,
   "end_distance_m": 633.0,
   "midpoint_distance_m": 630.5,
   "start_elevation_m": 148.94566528514434,
   "end_elevation_m": 150.8842794313056,
   "start_xy": [
    329596.76006022235,
    374056.7036656586
   ],
   "end_xy": [
    329591.7992507471,
    374057.32617749734
   ]
  },
  "max_10m": {
   "gradient_pct": 34.53041110495093,
   "start_distance_m": 628.0,
   "end_distance_m": 638.0,
   "midpoint_distance_m": 633.0,
   "start_elevation_m": 148.94566528514434,
   "end_elevation_m": 152.39870639563944,
   "start_xy": [
    329596.76006022235,
    374056.7036656586
   ],
   "end_xy": [
    329586.8341656085,
    374057.91603304463
   ]
  },
  "max_20m": {
   "gradient_pct": 32.82854514915627,
   "start_distance_m": 619.0,
   "end_distance_m": 639.0,
   "midpoint_distance_m": 629.0,
   "start_elevation_m": 146.16255562156408,
   "end_elevation_m": 152.72826465139534,
   "start_xy": [
    329605.6693077854,
    374055.4287900329
   ],
   "end_xy": [
    329585.8411485808,
    374058.0340041541
   ]
  },
  "max_25m": {
   "gradient_pct": 31.27465654183618,
   "start_distance_m": 616.0,
   "end_distance_m": 641.0,
   "midpoint_distance_m": 628.5,
   "start_elevation_m": 145.32264938593914,
   "end_elevation_m": 153.1413135213982,
   "start_xy": [
    329608.63905697304,
    374055.00383149105
   ],
   "end_xy": [
    329583.85511452536,
    374058.269946373
   ]
  },
  "max_50m": {
   "gradient_pct": 27.052748186519974,
   "start_distance_m": 611.0,
   "end_distance_m": 661.0,
   "midpoint_distance_m": 636.0,
   "start_elevation_m": 144.21228612677697,
   "end_elevation_m": 157.73866022003696,
   "start_xy": [
    329613.40696649044,
    374053.69785287965
   ],
   "end_xy": [
    329563.8874845115,
    374058.8581461184
   ]
  },
  "max_100m": {
   "gradient_pct": 24.198741359288107,
   "start_distance_m": 598.0,
   "end_distance_m": 698.0,
   "midpoint_distance_m": 648.0,
   "start_elevation_m": 141.4517671534125,
   "end_elevation_m": 165.6505085127006,
   "start_xy": [
    329625.12398652197,
    374048.0665615907
   ],
   "end_xy": [
    329530.3381243597,
    374072.9853173274
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.469749208937401,
   "start_distance_m": 2.0,
   "end_distance_m": 7.0,
   "midpoint_distance_m": 4.5,
   "start_elevation_m": 76.83267344774262,
   "end_elevation_m": 76.90616090818949,
   "start_xy": [
    330088.37909056136,
    373682.7091238325
   ],
   "end_xy": [
    330084.7343169648,
    373686.1319334138
   ]
  },
  "min_10m": {
   "gradient_pct": 3.0048932318668164,
   "start_distance_m": 1.0,
   "end_distance_m": 11.0,
   "midpoint_distance_m": 6.0,
   "start_elevation_m": 76.79477080192859,
   "end_elevation_m": 77.09526012511527,
   "start_xy": [
    330089.1080452807,
    373682.0245619163
   ],
   "end_xy": [
    330081.60564356414,
    373688.62289325334
   ]
  },
  "min_20m": {
   "gradient_pct": 4.099679197445596,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 76.75124159240676,
   "end_elevation_m": 77.57117743189588,
   "start_xy": [
    330089.837,
    373681.34
   ],
   "end_xy": [
    330074.5367887384,
    373694.1934669627
   ]
  },
  "min_25m": {
   "gradient_pct": 4.300881929614604,
   "start_distance_m": 2.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 14.5,
   "start_elevation_m": 76.83267344774262,
   "end_elevation_m": 77.90789393014627,
   "start_xy": [
    330088.37909056136,
    373682.7091238325
   ],
   "end_xy": [
    330069.0997865452,
    373698.60104734375
   ]
  },
  "min_50m": {
   "gradient_pct": 4.803426255141346,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 76.75124159240676,
   "end_elevation_m": 79.15295471997743,
   "start_xy": [
    330089.837,
    373681.34
   ],
   "end_xy": [
    330051.88091362064,
    373713.83562405244
   ]
  },
  "min_100m": {
   "gradient_pct": 5.272710891950269,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 76.75124159240676,
   "end_elevation_m": 82.02395248435703,
   "start_xy": [
    330089.837,
    373681.34
   ],
   "end_xy": [
    330021.6724317925,
    373753.274809891
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 44.22123303418317,
   "start_distance_m": 630.0,
   "end_distance_m": 632.0,
   "midpoint_distance_m": 631.0,
   "start_elevation_m": 149.65965593480286,
   "end_elevation_m": 150.54408059548652,
   "start_xy": [
    329594.7783018302,
    374056.97226416896
   ],
   "end_xy": [
    329592.79226777476,
    374057.2082063879
   ]
  },
  "max_3m": {
   "gradient_pct": 40.82078321675814,
   "start_distance_m": 630.0,
   "end_distance_m": 633.0,
   "midpoint_distance_m": 631.5,
   "start_elevation_m": 149.65965593480286,
   "end_elevation_m": 150.8842794313056,
   "start_xy": [
    329594.7783018302,
    374056.97226416896
   ],
   "end_xy": [
    329591.7992507471,
    374057.32617749734
   ]
  }
 },
 "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": 0.08,
   "obstruction_max_height_m": 27.3,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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:29902",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ni/belfast-city-2006/dtm/329373.asc",
   "data/cache/ni/belfast-city-2006/dtm/329374.asc",
   "data/cache/ni/belfast-city-2006/dtm/330373.asc",
   "data/cache/ni/belfast-city-2006/dtm/330374.asc"
  ],
  "calculated_at": "2026-08-19T00:22:18+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/root/ni-survey/ireland-and-northern-ireland-2026-08-18.osm.pbf",
  "osm_snapshot": "2026-08-17T20:21:36Z",
  "elevation_provider": "OpenDataNI (OSNI / DfI Rivers River Basin LiDAR)",
  "elevation_licence": "Open Government Licence v3 \u2014 Crown copyright; Belfast City 2006 data \u00a9 Cyient Europe Ltd, published as open data by DfI",
  "elevation_dataset": "DfI Rivers Belfast City LiDAR 0.5 m DTM/DSM (March 2006)",
  "elevation_tile_ids": [
   "329373",
   "329374",
   "330373",
   "330374"
  ],
  "elevation_attribution_extra": "Derived data \u00a9 Cyient Europe Ltd (published as open data by DfI)",
  "climb_origin": "discovered",
  "notes": "EXTENDED by graph walk: +5 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Adopted 2026-08-18 (NI launch set \u2014 see docs/ni-coverage-survey.md)."
 },
 "area": {
  "place": "Belfast",
  "county": "County Antrim"
 }
}