{
 "ocl_version": "0.1.0",
 "name": "Chancellor Place",
 "slug": "chancellor-place",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 20.79092721611957,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 164.0,
   "end_distance_m": 166.0,
   "start_elevation_m": 97.94815562754857,
   "end_elevation_m": 98.36397417187096,
   "min_gradient_pct": 2.324364486816677
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.52916668897069,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 143.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 93.74950800286118,
   "end_elevation_m": 94.3653830035303,
   "min_gradient_pct": 2.212326981234488
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.443290495274198,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 93.34321847876659,
   "end_elevation_m": 94.3653830035303,
   "min_gradient_pct": 2.743108524437332
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.22477055903707,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 140.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 93.1421862691943,
   "end_elevation_m": 95.164663325098,
   "min_gradient_pct": 3.419341980706605
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.06567833749287,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 140.0,
   "end_distance_m": 160.0,
   "start_elevation_m": 93.1421862691943,
   "end_elevation_m": 97.15532193669287,
   "min_gradient_pct": 4.461825813016773
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.083022772417507,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 141.0,
   "end_distance_m": 166.0,
   "start_elevation_m": 93.34321847876659,
   "end_elevation_m": 98.36397417187096,
   "min_gradient_pct": 4.787669040111325
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.685930795724147,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 134.0,
   "end_distance_m": 184.0,
   "start_elevation_m": 91.97346363128163,
   "end_elevation_m": 101.8164290291437,
   "min_gradient_pct": 6.2274768792958355
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.801879705717113,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 119.0,
   "end_distance_m": 219.0,
   "start_elevation_m": 89.32603928974936,
   "end_elevation_m": 108.12791899546647,
   "min_gradient_pct": 7.8715958479104415
  }
 ],
 "shape": {
  "ascent_concentration": 0.365,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 267.0,
  "shape_class": "sustained"
 },
 "length_m": 371.79661458739645,
 "start_elevation_m": 78.56979292992376,
 "end_elevation_m": 126.95400518495899,
 "endpoint_gain_m": 48.38421225503522,
 "overall_gradient_pct": 13.013623673989043,
 "accumulated_ascent_m": 48.38421225503522,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.443290495274198,
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 93.34321847876659,
   "end_elevation_m": 94.3653830035303,
   "start_xy": [
    1773272.451973676,
    5906132.998392595
   ],
   "end_xy": [
    1773272.538276376,
    5906137.997647724
   ]
  },
  "max_10m": {
   "gradient_pct": 20.22477055903707,
   "start_distance_m": 140.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 93.1421862691943,
   "end_elevation_m": 95.164663325098,
   "start_xy": [
    1773272.4347131362,
    5906131.998541569
   ],
   "end_xy": [
    1773272.607318536,
    5906141.997051827
   ]
  },
  "max_20m": {
   "gradient_pct": 20.06567833749287,
   "start_distance_m": 140.0,
   "end_distance_m": 160.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 93.1421862691943,
   "end_elevation_m": 97.15532193669287,
   "start_xy": [
    1773272.4347131362,
    5906131.998541569
   ],
   "end_xy": [
    1773272.779923936,
    5906151.995562085
   ]
  },
  "max_25m": {
   "gradient_pct": 20.083022772417507,
   "start_distance_m": 141.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 153.5,
   "start_elevation_m": 93.34321847876659,
   "end_elevation_m": 98.36397417187096,
   "start_xy": [
    1773272.451973676,
    5906132.998392595
   ],
   "end_xy": [
    1773272.883487176,
    5906157.99466824
   ]
  },
  "max_50m": {
   "gradient_pct": 19.685930795724147,
   "start_distance_m": 134.0,
   "end_distance_m": 184.0,
   "midpoint_distance_m": 159.0,
   "start_elevation_m": 91.97346363128163,
   "end_elevation_m": 101.8164290291437,
   "start_xy": [
    1773271.9822361274,
    5906126.050460025
   ],
   "end_xy": [
    1773277.5196728434,
    5906175.113410206
   ]
  },
  "max_100m": {
   "gradient_pct": 18.801879705717113,
   "start_distance_m": 119.0,
   "end_distance_m": 219.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 89.32603928974936,
   "end_elevation_m": 108.12791899546647,
   "start_xy": [
    1773265.9578593236,
    5906112.525708141
   ],
   "end_xy": [
    1773304.968949222,
    5906193.934565338
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 2.743108524437332,
   "start_distance_m": 4.0,
   "end_distance_m": 9.0,
   "midpoint_distance_m": 6.5,
   "start_elevation_m": 78.7413374729534,
   "end_elevation_m": 78.87849289917527,
   "start_xy": [
    1773165.8697531463,
    5906062.004397523
   ],
   "end_xy": [
    1773169.7844445792,
    5906065.1148944255
   ]
  },
  "min_10m": {
   "gradient_pct": 3.419341980706605,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 78.56979292992376,
   "end_elevation_m": 78.91172712799442,
   "start_xy": [
    1773162.738,
    5906059.516
   ],
   "end_xy": [
    1773170.5673828658,
    5906065.736993806
   ]
  },
  "min_20m": {
   "gradient_pct": 4.461825813016773,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 78.56979292992376,
   "end_elevation_m": 79.46215809252712,
   "start_xy": [
    1773162.738,
    5906059.516
   ],
   "end_xy": [
    1773178.3967657315,
    5906071.957987613
   ]
  },
  "min_25m": {
   "gradient_pct": 4.787669040111325,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 78.56979292992376,
   "end_elevation_m": 79.7667101899516,
   "start_xy": [
    1773162.738,
    5906059.516
   ],
   "end_xy": [
    1773182.8791894838,
    5906074.0821627425
   ]
  },
  "min_50m": {
   "gradient_pct": 6.2274768792958355,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 78.56979292992376,
   "end_elevation_m": 81.68353136957168,
   "start_xy": [
    1773162.738,
    5906059.516
   ],
   "end_xy": [
    1773206.395791927,
    5906082.480835962
   ]
  },
  "min_100m": {
   "gradient_pct": 7.8715958479104415,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 78.56979292992376,
   "end_elevation_m": 86.4413887778342,
   "start_xy": [
    1773162.738,
    5906059.516
   ],
   "end_xy": [
    1773253.42208938,
    5906098.45161136
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 20.79092721611957,
   "start_distance_m": 164.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 165.0,
   "start_elevation_m": 97.94815562754857,
   "end_elevation_m": 98.36397417187096,
   "start_xy": [
    1773272.8489660958,
    5906155.9949661875
   ],
   "end_xy": [
    1773272.883487176,
    5906157.99466824
   ]
  },
  "max_3m": {
   "gradient_pct": 20.52916668897069,
   "start_distance_m": 143.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 144.5,
   "start_elevation_m": 93.74950800286118,
   "end_elevation_m": 94.3653830035303,
   "start_xy": [
    1773272.486494756,
    5906134.998094646
   ],
   "end_xy": [
    1773272.538276376,
    5906137.997647724
   ]
  }
 },
 "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": 0.0,
   "obstruction_max_height_m": 0.77,
   "flagged_windows_m": []
  },
  "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-n3",
   "road_pbf": "block-batch-nz-n3.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": "sha256:7959a7d1d462b1b3"
  },
  "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/BB32.tiff"
  ],
  "calculated_at": "2026-09-28T05:43:45+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n3",
  "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": [
   "BB32"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 21,
   "stations_resolved": 21,
   "width_median_m": 6.75,
   "width_p10_m": 6.0,
   "width_min_m": 5.75,
   "width_max_m": 12.0,
   "bounded_share": 0.0,
   "unbounded_share": 1.0,
   "confidence_median": 0.0,
   "window_m": [
    141.0,
    166.0
   ],
   "width_at_max25_m": 6.0,
   "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": 21,
    "stations_resolved": 21,
    "width_median_m": 10.75,
    "width_p10_m": 8.5,
    "width_min_m": 7.75,
    "width_max_m": 12.0,
    "bounded_share": 0.095,
    "unbounded_share": 0.905,
    "confidence_median": 0.0,
    "width_median_bounded_m": 9.12,
    "window_m": [
     141.0,
     166.0
    ],
    "width_at_max25_m": 11.25,
    "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": "Howick",
  "county": "Auckland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}