{
 "ocl_version": "0.1.0",
 "name": "Bellevue Heights",
 "slug": "bellevue-heights",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.615927654036085,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 305.0,
   "end_distance_m": 307.0,
   "start_elevation_m": 81.4339631121136,
   "end_elevation_m": 81.92628166519432,
   "min_gradient_pct": -3.7678329292795354
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.610045646396372,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 304.0,
   "end_distance_m": 307.0,
   "start_elevation_m": 81.18798029580243,
   "end_elevation_m": 81.92628166519432,
   "min_gradient_pct": -2.2672243431784977
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.4318682485914,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 302.0,
   "end_distance_m": 307.0,
   "start_elevation_m": 80.70468825276475,
   "end_elevation_m": 81.92628166519432,
   "min_gradient_pct": 0.42534853177158993
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.25248897523886,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 297.0,
   "end_distance_m": 307.0,
   "start_elevation_m": 79.50103276767044,
   "end_elevation_m": 81.92628166519432,
   "min_gradient_pct": 3.0131019438638873
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.774564633514643,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 290.0,
   "end_distance_m": 310.0,
   "start_elevation_m": 77.86910412672742,
   "end_elevation_m": 82.62401705343035,
   "min_gradient_pct": 4.245674718125088
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.487192277777186,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 286.0,
   "end_distance_m": 311.0,
   "start_elevation_m": 76.96603833127543,
   "end_elevation_m": 82.83783640071972,
   "min_gradient_pct": 4.475131391020398
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.1775026118014,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 287.0,
   "end_distance_m": 337.0,
   "start_elevation_m": 77.18074005714332,
   "end_elevation_m": 88.26949136304403,
   "min_gradient_pct": 5.06856908383773
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.02074885151438,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 255.0,
   "end_distance_m": 355.0,
   "start_elevation_m": 70.95934507030505,
   "end_elevation_m": 91.98009392181943,
   "min_gradient_pct": 5.333770593289969
  }
 ],
 "shape": {
  "ascent_concentration": 0.45,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 143.0,
  "shape_class": "stepped"
 },
 "length_m": 457.108431537596,
 "start_elevation_m": 55.93643338000921,
 "end_elevation_m": 107.81092117540817,
 "endpoint_gain_m": 51.874487795398956,
 "overall_gradient_pct": 11.348398807894755,
 "accumulated_ascent_m": 51.94984445398455,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.4318682485914,
   "start_distance_m": 302.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 304.5,
   "start_elevation_m": 80.70468825276475,
   "end_elevation_m": 81.92628166519432,
   "start_xy": [
    1621223.6881882215,
    5429818.337008458
   ],
   "end_xy": [
    1621227.5593789315,
    5429815.172536545
   ]
  },
  "max_10m": {
   "gradient_pct": 24.25248897523886,
   "start_distance_m": 297.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 302.0,
   "start_elevation_m": 79.50103276767044,
   "end_elevation_m": 81.92628166519432,
   "start_xy": [
    1621219.8169975115,
    5429821.501480371
   ],
   "end_xy": [
    1621227.5593789315,
    5429815.172536545
   ]
  },
  "max_20m": {
   "gradient_pct": 23.774564633514643,
   "start_distance_m": 290.0,
   "end_distance_m": 310.0,
   "midpoint_distance_m": 300.0,
   "start_elevation_m": 77.86910412672742,
   "end_elevation_m": 82.62401705343035,
   "start_xy": [
    1621214.43966743,
    5429825.981156202
   ],
   "end_xy": [
    1621230.1189470256,
    5429813.626875767
   ]
  },
  "max_25m": {
   "gradient_pct": 23.487192277777186,
   "start_distance_m": 286.0,
   "end_distance_m": 311.0,
   "midpoint_distance_m": 298.5,
   "start_elevation_m": 76.96603833127543,
   "end_elevation_m": 82.83783640071972,
   "start_xy": [
    1621211.4630407149,
    5429828.653176674
   ],
   "end_xy": [
    1621230.9981487307,
    5429813.150426019
   ]
  },
  "max_50m": {
   "gradient_pct": 22.1775026118014,
   "start_distance_m": 287.0,
   "end_distance_m": 337.0,
   "midpoint_distance_m": 312.0,
   "start_elevation_m": 77.18074005714332,
   "end_elevation_m": 88.26949136304403,
   "start_xy": [
    1621212.2071973938,
    5429827.985171556
   ],
   "end_xy": [
    1621256.6159900473,
    5429811.359515982
   ]
  },
  "max_100m": {
   "gradient_pct": 21.02074885151438,
   "start_distance_m": 255.0,
   "end_distance_m": 355.0,
   "midpoint_distance_m": 305.0,
   "start_elevation_m": 70.95934507030505,
   "end_elevation_m": 91.98009392181943,
   "start_xy": [
    1621188.3941836727,
    5429849.361335326
   ],
   "end_xy": [
    1621274.1770603822,
    5429814.412879481
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.42534853177158993,
   "start_distance_m": 246.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 248.5,
   "start_elevation_m": 70.30731919027545,
   "end_elevation_m": 70.32858661686403,
   "start_xy": [
    1621182.3630347569,
    5429851.682820655
   ],
   "end_xy": [
    1621185.4175569576,
    5429852.033355797
   ]
  },
  "min_10m": {
   "gradient_pct": 3.0131019438638873,
   "start_distance_m": 241.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 246.0,
   "start_elevation_m": 70.02727642247764,
   "end_elevation_m": 70.32858661686403,
   "start_xy": [
    1621180.0450221298,
    5429847.252604242
   ],
   "end_xy": [
    1621185.4175569576,
    5429852.033355797
   ]
  },
  "min_20m": {
   "gradient_pct": 4.245674718125088,
   "start_distance_m": 231.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 241.0,
   "start_elevation_m": 69.47945167323901,
   "end_elevation_m": 70.32858661686403,
   "start_xy": [
    1621175.1391215827,
    5429838.542938169
   ],
   "end_xy": [
    1621185.4175569576,
    5429852.033355797
   ]
  },
  "min_25m": {
   "gradient_pct": 4.475131391020398,
   "start_distance_m": 226.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 238.5,
   "start_elevation_m": 69.20980376910893,
   "end_elevation_m": 70.32858661686403,
   "start_xy": [
    1621172.5818838738,
    5429834.246365663
   ],
   "end_xy": [
    1621185.4175569576,
    5429852.033355797
   ]
  },
  "min_50m": {
   "gradient_pct": 5.06856908383773,
   "start_distance_m": 201.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 226.0,
   "start_elevation_m": 67.79430207494516,
   "end_elevation_m": 70.32858661686403,
   "start_xy": [
    1621159.6711649606,
    5429812.838450334
   ],
   "end_xy": [
    1621185.4175569576,
    5429852.033355797
   ]
  },
  "min_100m": {
   "gradient_pct": 5.333770593289969,
   "start_distance_m": 151.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 201.0,
   "start_elevation_m": 64.99481602357406,
   "end_elevation_m": 70.32858661686403,
   "start_xy": [
    1621131.8449668642,
    5429771.340717057
   ],
   "end_xy": [
    1621185.4175569576,
    5429852.033355797
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.615927654036085,
   "start_distance_m": 305.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 306.0,
   "start_elevation_m": 81.4339631121136,
   "end_elevation_m": 81.92628166519432,
   "start_xy": [
    1621226.0109026476,
    5429816.43832531
   ],
   "end_xy": [
    1621227.5593789315,
    5429815.172536545
   ]
  },
  "max_3m": {
   "gradient_pct": 24.610045646396372,
   "start_distance_m": 304.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 305.5,
   "start_elevation_m": 81.18798029580243,
   "end_elevation_m": 81.92628166519432,
   "start_xy": [
    1621225.2366645057,
    5429817.071219693
   ],
   "end_xy": [
    1621227.5593789315,
    5429815.172536545
   ]
  }
 },
 "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": 0.098,
   "obstruction_max_height_m": 9.61,
   "flagged_windows_m": [
    2,
    3,
    5,
    10
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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-n1",
   "road_pbf": "block-batch-nz-n1.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:ff0dec6edae18a40"
  },
  "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/BQ26.tiff"
  ],
  "calculated_at": "2026-09-28T05:12:48+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n1",
  "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": [
   "BQ26"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 25,
   "stations_resolved": 25,
   "width_median_m": 6.75,
   "width_p10_m": 4.5,
   "width_min_m": 2.75,
   "width_max_m": 12.0,
   "bounded_share": 0.32,
   "unbounded_share": 0.68,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.25,
   "window_m": [
    286.0,
    311.0
   ],
   "width_at_max25_m": 8.5,
   "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": 25,
    "stations_resolved": 25,
    "width_median_m": 3.75,
    "width_p10_m": 1.25,
    "width_min_m": 1.0,
    "width_max_m": 7.75,
    "bounded_share": 0.96,
    "unbounded_share": 0.04,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.62,
    "window_m": [
     286.0,
     311.0
    ],
    "width_at_max25_m": 3.0,
    "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": "Nelson",
  "county": "Nelson",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}