{
 "ocl_version": "0.1.0",
 "name": "Garden Bush Road",
 "slug": "garden-bush-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.239683096782755,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 978.0,
   "end_distance_m": 980.0,
   "start_elevation_m": 376.08225473784887,
   "end_elevation_m": 376.7070483997845,
   "min_gradient_pct": -27.83755729770121,
   "suppressed_max_gradient_pct": 57.85073442549731,
   "suppressed_location_m": [
    530.0,
    532.0
   ],
   "suppressed_min_gradient_pct": -54.13325939323386,
   "suppressed_min_location_m": [
    526.0,
    528.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.959920910376542,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 978.0,
   "end_distance_m": 981.0,
   "start_elevation_m": 376.08225473784887,
   "end_elevation_m": 376.98105236516017,
   "min_gradient_pct": -18.93563094624066,
   "suppressed_max_gradient_pct": 49.04435219845406,
   "suppressed_location_m": [
    530.0,
    533.0
   ],
   "suppressed_min_gradient_pct": -50.38744760473719,
   "suppressed_min_location_m": [
    525.0,
    528.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.232749837443407,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 977.0,
   "end_distance_m": 982.0,
   "start_elevation_m": 375.81005462882956,
   "end_elevation_m": 377.22169212070173,
   "min_gradient_pct": -7.747695791049409,
   "suppressed_max_gradient_pct": 30.465225256741633,
   "suppressed_location_m": [
    529.0,
    534.0
   ],
   "suppressed_min_gradient_pct": -32.297376919768794,
   "suppressed_min_location_m": [
    568.0,
    573.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.691872055744852,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 977.0,
   "end_distance_m": 987.0,
   "start_elevation_m": 375.81005462882956,
   "end_elevation_m": 378.27924183440405,
   "min_gradient_pct": -5.210892615085072,
   "suppressed_min_gradient_pct": -15.929143366028029,
   "suppressed_min_location_m": [
    563.0,
    573.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.76444605509147,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 973.0,
   "end_distance_m": 993.0,
   "start_elevation_m": 375.02882190082505,
   "end_elevation_m": 379.38171111184334,
   "min_gradient_pct": -4.044766468250316,
   "suppressed_min_gradient_pct": -7.599749278973036,
   "suppressed_min_location_m": [
    553.0,
    573.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.809779538597923,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 973.0,
   "end_distance_m": 998.0,
   "start_elevation_m": 375.02882190082505,
   "end_elevation_m": 380.23126678547453,
   "min_gradient_pct": -3.4768571650545255,
   "suppressed_min_gradient_pct": -6.0784683430943005,
   "suppressed_min_location_m": [
    548.0,
    573.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.24530304735788,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 977.0,
   "end_distance_m": 1027.0,
   "start_elevation_m": 375.81005462882956,
   "end_elevation_m": 385.4327061525085,
   "min_gradient_pct": -1.9079352331820019,
   "suppressed_min_gradient_pct": -2.621640510988982,
   "suppressed_min_location_m": [
    479.0,
    529.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.69247796072102,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 963.0,
   "end_distance_m": 1063.0,
   "start_elevation_m": 373.6732963483158,
   "end_elevation_m": 391.3657743090368,
   "min_gradient_pct": -0.8705453831603904,
   "suppressed_min_gradient_pct": -1.4537635878546666,
   "suppressed_min_location_m": [
    429.0,
    529.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.423,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 498.0,
  "shape_class": "sustained"
 },
 "length_m": 2257.7302067547134,
 "start_elevation_m": 338.3447322907964,
 "end_elevation_m": 526.6628109531534,
 "endpoint_gain_m": 188.31807866235704,
 "overall_gradient_pct": 8.341035527581816,
 "accumulated_ascent_m": 198.0928792874239,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.232749837443407,
   "start_distance_m": 977.0,
   "end_distance_m": 982.0,
   "midpoint_distance_m": 979.5,
   "start_elevation_m": 375.81005462882956,
   "end_elevation_m": 377.22169212070173,
   "start_xy": [
    1404379.2537932843,
    4947738.594335449
   ],
   "end_xy": [
    1404374.3757304717,
    4947737.604313607
   ]
  },
  "max_10m": {
   "gradient_pct": 24.691872055744852,
   "start_distance_m": 977.0,
   "end_distance_m": 987.0,
   "midpoint_distance_m": 982.0,
   "start_elevation_m": 375.81005462882956,
   "end_elevation_m": 378.27924183440405,
   "start_xy": [
    1404379.2537932843,
    4947738.594335449
   ],
   "end_xy": [
    1404369.4481985108,
    4947736.756122136
   ]
  },
  "max_20m": {
   "gradient_pct": 21.76444605509147,
   "start_distance_m": 973.0,
   "end_distance_m": 993.0,
   "midpoint_distance_m": 983.0,
   "start_elevation_m": 375.02882190082505,
   "end_elevation_m": 379.38171111184334,
   "start_xy": [
    1404382.762718878,
    4947740.51460657
   ],
   "end_xy": [
    1404363.5351601574,
    4947735.73829237
   ]
  },
  "max_25m": {
   "gradient_pct": 20.809779538597923,
   "start_distance_m": 973.0,
   "end_distance_m": 998.0,
   "midpoint_distance_m": 985.5,
   "start_elevation_m": 375.02882190082505,
   "end_elevation_m": 380.23126678547453,
   "start_xy": [
    1404382.762718878,
    4947740.51460657
   ],
   "end_xy": [
    1404358.5666173561,
    4947735.828128486
   ]
  },
  "max_50m": {
   "gradient_pct": 19.24530304735788,
   "start_distance_m": 977.0,
   "end_distance_m": 1027.0,
   "midpoint_distance_m": 1002.0,
   "start_elevation_m": 375.81005462882956,
   "end_elevation_m": 385.4327061525085,
   "start_xy": [
    1404379.2537932843,
    4947738.594335449
   ],
   "end_xy": [
    1404329.6666374137,
    4947738.234611257
   ]
  },
  "max_100m": {
   "gradient_pct": 17.69247796072102,
   "start_distance_m": 963.0,
   "end_distance_m": 1063.0,
   "midpoint_distance_m": 1013.0,
   "start_elevation_m": 373.6732963483158,
   "end_elevation_m": 391.3657743090368,
   "start_xy": [
    1404391.535032862,
    4947745.315284372
   ],
   "end_xy": [
    1404293.7537907872,
    4947739.792400997
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.747695791049409,
   "start_distance_m": 44.0,
   "end_distance_m": 49.0,
   "midpoint_distance_m": 46.5,
   "start_elevation_m": 339.014944399885,
   "end_elevation_m": 338.6275596103325,
   "start_xy": [
    1405187.5031073533,
    4948101.141183971
   ],
   "end_xy": [
    1405183.0738013708,
    4948098.82143215
   ]
  },
  "min_10m": {
   "gradient_pct": -5.210892615085072,
   "start_distance_m": 31.0,
   "end_distance_m": 41.0,
   "midpoint_distance_m": 36.0,
   "start_elevation_m": 339.44285201489976,
   "end_elevation_m": 338.92176275339125,
   "start_xy": [
    1405199.019302908,
    4948107.172538707
   ],
   "end_xy": [
    1405190.1606909428,
    4948102.533035064
   ]
  },
  "min_20m": {
   "gradient_pct": -4.044766468250316,
   "start_distance_m": 30.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 40.0,
   "start_elevation_m": 339.4345420501193,
   "end_elevation_m": 338.62558875646926,
   "start_xy": [
    1405199.9051641044,
    4948107.636489071
   ],
   "end_xy": [
    1405182.1879401742,
    4948098.357481786
   ]
  },
  "min_25m": {
   "gradient_pct": -3.4768571650545255,
   "start_distance_m": 363.0,
   "end_distance_m": 388.0,
   "midpoint_distance_m": 375.5,
   "start_elevation_m": 341.2672800196241,
   "end_elevation_m": 340.39806572836045,
   "start_xy": [
    1404906.0862214179,
    4947951.604660504
   ],
   "end_xy": [
    1404884.2235088614,
    4947939.47940588
   ]
  },
  "min_50m": {
   "gradient_pct": -1.9079352331820019,
   "start_distance_m": 57.0,
   "end_distance_m": 107.0,
   "midpoint_distance_m": 82.0,
   "start_elevation_m": 339.6839547704297,
   "end_elevation_m": 338.7299871538387,
   "start_xy": [
    1405175.9869117986,
    4948095.109829236
   ],
   "end_xy": [
    1405132.2367732746,
    4948070.923796374
   ]
  },
  "min_100m": {
   "gradient_pct": -0.8705453831603904,
   "start_distance_m": 57.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 107.0,
   "start_elevation_m": 339.6839547704297,
   "end_elevation_m": 338.8134093872693,
   "start_xy": [
    1405175.9869117986,
    4948095.109829236
   ],
   "end_xy": [
    1405087.7469675892,
    4948048.350838763
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.239683096782755,
   "start_distance_m": 978.0,
   "end_distance_m": 980.0,
   "midpoint_distance_m": 979.0,
   "start_elevation_m": 376.08225473784887,
   "end_elevation_m": 376.7070483997845,
   "start_xy": [
    1404378.3177560407,
    4947738.282866785
   ],
   "end_xy": [
    1404376.3467432563,
    4947737.943590196
   ]
  },
  "max_3m": {
   "gradient_pct": 29.959920910376542,
   "start_distance_m": 978.0,
   "end_distance_m": 981.0,
   "midpoint_distance_m": 979.5,
   "start_elevation_m": 376.08225473784887,
   "end_elevation_m": 376.98105236516017,
   "start_xy": [
    1404378.3177560407,
    4947738.282866785
   ],
   "end_xy": [
    1404375.361236864,
    4947737.773951902
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.008,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.0,
   "obstruction_max_height_m": 1.53,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    524.0,
    534.0
   ],
   [
    567.0,
    572.0
   ]
  ],
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "f5ccc1713da600fbea2ba1433fb64f96644949ee",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "nz-s2",
   "road_pbf": "block-batch-nz-s2.osm.pbf",
   "region_key": "nz",
   "crs": "EPSG:2193",
   "elevation_provider_key": "nz-linz",
   "tile_index": "stac",
   "authority": "linz",
   "registry_pbf": "new-zealand-2026-09-26.osm.pbf",
   "tile_index_snapshot": "sha256:996c8a61eaf9687f"
  },
  "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:2193",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/nz/CD17.tiff"
  ],
  "calculated_at": "2026-09-28T05:26:25+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-s2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-s2",
  "elevation_provider": "LINZ nz-elevation",
  "elevation_licence": "CC BY 4.0 \u2014 Toit\u016b Te Whenua Land Information New Zealand \u2014 https://nz-elevation.s3.ap-southeast-2.amazonaws.com/LICENSE",
  "elevation_dataset": "New Zealand 1 m DEM/DSM national LiDAR mosaic \u2014 Toit\u016b Te Whenua Land Information New Zealand (LINZ), vertical datum NZVD2016 (LINZ documentation; not re-verified against a benchmark)",
  "elevation_tile_ids": [
   "CD17"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 97,
   "stations_resolved": 97,
   "width_median_m": 4.25,
   "width_p10_m": 2.65,
   "width_min_m": 1.5,
   "width_max_m": 10.75,
   "bounded_share": 0.155,
   "unbounded_share": 0.845,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    973.0,
    998.0
   ],
   "width_at_max25_m": 4.0,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 97,
    "stations_resolved": 97,
    "width_median_m": 8.25,
    "width_p10_m": 5.25,
    "width_min_m": 2.25,
    "width_max_m": 12.0,
    "bounded_share": 0.495,
    "unbounded_share": 0.505,
    "confidence_median": 0.0,
    "width_median_bounded_m": 6.25,
    "window_m": [
     973.0,
     998.0
    ],
    "width_at_max25_m": 9.0,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Otago",
  "county": "Otago",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}