{
 "ocl_version": "0.1.0",
 "name": "Golf Course Road",
 "slug": "golf-course-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.35646087672626,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 505.0,
   "end_distance_m": 507.0,
   "start_elevation_m": 217.62791541203808,
   "end_elevation_m": 218.3550446295726,
   "min_gradient_pct": -15.91136000710236,
   "suppressed_max_gradient_pct": 72.95077708847373,
   "suppressed_location_m": [
    0.0,
    2.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.20273890221021,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 505.0,
   "end_distance_m": 508.0,
   "start_elevation_m": 217.62791541203808,
   "end_elevation_m": 218.65399757910438,
   "min_gradient_pct": -14.61441746299954,
   "suppressed_max_gradient_pct": 48.2172150270524,
   "suppressed_location_m": [
    0.0,
    3.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.072069935403874,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 505.0,
   "end_distance_m": 510.0,
   "start_elevation_m": 217.62791541203808,
   "end_elevation_m": 219.18151890880827,
   "min_gradient_pct": -11.52526568292842
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.89006000983352,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 501.0,
   "end_distance_m": 511.0,
   "start_elevation_m": 217.01574286666562,
   "end_elevation_m": 219.50474886764897,
   "min_gradient_pct": -9.315401294556409
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.650522189998355,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 492.0,
   "end_distance_m": 512.0,
   "start_elevation_m": 214.9865164254156,
   "end_elevation_m": 219.71662086341527,
   "min_gradient_pct": -8.09035633204303
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.47551415097655,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 487.0,
   "end_distance_m": 512.0,
   "start_elevation_m": 214.59774232567113,
   "end_elevation_m": 219.71662086341527,
   "min_gradient_pct": -7.660965545039289
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.865753151450349,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 462.0,
   "end_distance_m": 512.0,
   "start_elevation_m": 211.7837442876901,
   "end_elevation_m": 219.71662086341527,
   "min_gradient_pct": -5.641809448131198
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.661776416465132,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 412.0,
   "end_distance_m": 512.0,
   "start_elevation_m": 206.05484444695014,
   "end_elevation_m": 219.71662086341527,
   "min_gradient_pct": -4.53654321545028
  }
 ],
 "shape": {
  "ascent_concentration": 0.461,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 76.0,
  "shape_class": "stepped"
 },
 "length_m": 899.9999999996344,
 "start_elevation_m": 192.4932921848773,
 "end_elevation_m": 240.88140401966552,
 "endpoint_gain_m": 48.38811183478822,
 "overall_gradient_pct": 5.376456870534208,
 "accumulated_ascent_m": 57.28535199147086,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.072069935403874,
   "start_distance_m": 505.0,
   "end_distance_m": 510.0,
   "midpoint_distance_m": 507.5,
   "start_elevation_m": 217.62791541203808,
   "end_elevation_m": 219.18151890880827,
   "start_xy": [
    2064900.97452646,
    5776899.6812589625
   ],
   "end_xy": [
    2064903.8729998497,
    5776903.7554278355
   ]
  },
  "max_10m": {
   "gradient_pct": 24.89006000983352,
   "start_distance_m": 501.0,
   "end_distance_m": 511.0,
   "midpoint_distance_m": 506.0,
   "start_elevation_m": 217.01574286666562,
   "end_elevation_m": 219.50474886764897,
   "start_xy": [
    2064897.2597079063,
    5776898.512794025
   ],
   "end_xy": [
    2064904.4526945276,
    5776904.570261611
   ]
  },
  "max_20m": {
   "gradient_pct": 23.650522189998355,
   "start_distance_m": 492.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 502.0,
   "start_elevation_m": 214.9865164254156,
   "end_elevation_m": 219.71662086341527,
   "start_xy": [
    2064888.4865013098,
    5776896.505097331
   ],
   "end_xy": [
    2064905.0323892056,
    5776905.385095385
   ]
  },
  "max_25m": {
   "gradient_pct": 20.47551415097655,
   "start_distance_m": 487.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 499.5,
   "start_elevation_m": 214.59774232567113,
   "end_elevation_m": 219.71662086341527,
   "start_xy": [
    2064883.7670177484,
    5776897.222178684
   ],
   "end_xy": [
    2064905.0323892056,
    5776905.385095385
   ]
  },
  "max_50m": {
   "gradient_pct": 15.865753151450349,
   "start_distance_m": 462.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 487.0,
   "start_elevation_m": 211.7837442876901,
   "end_elevation_m": 219.71662086341527,
   "start_xy": [
    2064860.6750088383,
    5776906.801276997
   ],
   "end_xy": [
    2064905.0323892056,
    5776905.385095385
   ]
  },
  "max_100m": {
   "gradient_pct": 13.661776416465132,
   "start_distance_m": 412.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 462.0,
   "start_elevation_m": 206.05484444695014,
   "end_elevation_m": 219.71662086341527,
   "start_xy": [
    2064814.4909910182,
    5776925.959473624
   ],
   "end_xy": [
    2064905.0323892056,
    5776905.385095385
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.52526568292842,
   "start_distance_m": 291.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 293.5,
   "start_elevation_m": 201.57359202086604,
   "end_elevation_m": 200.99732873671962,
   "start_xy": [
    2064820.32947842,
    5776836.0476397965
   ],
   "end_xy": [
    2064818.3449047327,
    5776840.63691722
   ]
  },
  "min_10m": {
   "gradient_pct": -9.315401294556409,
   "start_distance_m": 291.0,
   "end_distance_m": 301.0,
   "midpoint_distance_m": 296.0,
   "start_elevation_m": 201.57359202086604,
   "end_elevation_m": 200.6420518914104,
   "start_xy": [
    2064820.32947842,
    5776836.0476397965
   ],
   "end_xy": [
    2064816.3603310455,
    5776845.226194645
   ]
  },
  "min_20m": {
   "gradient_pct": -8.09035633204303,
   "start_distance_m": 291.0,
   "end_distance_m": 311.0,
   "midpoint_distance_m": 301.0,
   "start_elevation_m": 201.57359202086604,
   "end_elevation_m": 199.95552075445744,
   "start_xy": [
    2064820.32947842,
    5776836.0476397965
   ],
   "end_xy": [
    2064812.2976447323,
    5776854.359951122
   ]
  },
  "min_25m": {
   "gradient_pct": -7.660965545039289,
   "start_distance_m": 291.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 303.5,
   "start_elevation_m": 201.57359202086604,
   "end_elevation_m": 199.65835063460622,
   "start_xy": [
    2064820.32947842,
    5776836.0476397965
   ],
   "end_xy": [
    2064809.9659707297,
    5776858.782992648
   ]
  },
  "min_50m": {
   "gradient_pct": -5.641809448131198,
   "start_distance_m": 267.0,
   "end_distance_m": 317.0,
   "midpoint_distance_m": 292.0,
   "start_elevation_m": 202.42852728371616,
   "end_elevation_m": 199.60762255965057,
   "start_xy": [
    2064804.5328426538,
    5776819.3068931755
   ],
   "end_xy": [
    2064809.499635929,
    5776859.667600953
   ]
  },
  "min_100m": {
   "gradient_pct": -4.53654321545028,
   "start_distance_m": 217.0,
   "end_distance_m": 317.0,
   "midpoint_distance_m": 267.0,
   "start_elevation_m": 204.14416577510084,
   "end_elevation_m": 199.60762255965057,
   "start_xy": [
    2064779.446111152,
    5776779.399046841
   ],
   "end_xy": [
    2064809.499635929,
    5776859.667600953
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.35646087672626,
   "start_distance_m": 505.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 506.0,
   "start_elevation_m": 217.62791541203808,
   "end_elevation_m": 218.3550446295726,
   "start_xy": [
    2064900.97452646,
    5776899.6812589625
   ],
   "end_xy": [
    2064902.133915816,
    5776901.310926512
   ]
  },
  "max_3m": {
   "gradient_pct": 34.20273890221021,
   "start_distance_m": 505.0,
   "end_distance_m": 508.0,
   "midpoint_distance_m": 506.5,
   "start_elevation_m": 217.62791541203808,
   "end_elevation_m": 218.65399757910438,
   "start_xy": [
    2064900.97452646,
    5776899.6812589625
   ],
   "end_xy": [
    2064902.7136104938,
    5776902.125760286
   ]
  }
 },
 "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": 0.023,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.044,
   "obstruction_max_height_m": 15.62,
   "flagged_windows_m": [
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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-n5",
   "road_pbf": "block-batch-nz-n5.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": "sha256:5991b43afbe40ae2"
  },
  "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/BE44.tiff"
  ],
  "calculated_at": "2026-09-28T06:18:14+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n5",
  "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": [
   "BE44"
  ],
  "route_summit_trim_m": 139.8,
  "route_summit_trim_loss_m": 3.1,
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 43,
   "stations_resolved": 43,
   "width_median_m": 4.75,
   "width_p10_m": 2.8,
   "width_min_m": 2.0,
   "width_max_m": 11.25,
   "bounded_share": 0.093,
   "unbounded_share": 0.907,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.0,
   "window_m": [
    487.0,
    512.0
   ],
   "width_at_max25_m": 3.0,
   "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": 43,
    "stations_resolved": 43,
    "width_median_m": 7.75,
    "width_p10_m": 3.0,
    "width_min_m": 0.75,
    "width_max_m": 12.0,
    "bounded_share": 0.535,
    "unbounded_share": 0.465,
    "confidence_median": 0.98,
    "width_median_bounded_m": 6.25,
    "window_m": [
     487.0,
     512.0
    ],
    "width_at_max25_m": 5.5,
    "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": "Gisborne",
  "county": "Gisborne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}