{
 "ocl_version": "0.1.0",
 "name": "Kent Street",
 "slug": "kent-street",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 44.10023709982411,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 316.0,
   "end_distance_m": 318.0,
   "start_elevation_m": 41.24094102695605,
   "end_elevation_m": 42.12294576895253,
   "min_gradient_pct": -3.0012354604888714,
   "suppressed_max_gradient_pct": 68.95472988452056,
   "suppressed_location_m": [
    320.0,
    322.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.14824088147327,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 15.0,
   "end_distance_m": 18.0,
   "start_elevation_m": 6.73783780295976,
   "end_elevation_m": 7.672285029403958,
   "min_gradient_pct": -2.6367676426481523,
   "suppressed_max_gradient_pct": 55.91767077347806,
   "suppressed_location_m": [
    320.0,
    323.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.31304262303511,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 24.0,
   "end_distance_m": 29.0,
   "start_elevation_m": 9.137488253532348,
   "end_elevation_m": 10.653140384684104,
   "min_gradient_pct": -0.3794295976082651,
   "suppressed_max_gradient_pct": 42.44207984686895,
   "suppressed_location_m": [
    317.0,
    322.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.633491583126677,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 21.0,
   "end_distance_m": 31.0,
   "start_elevation_m": 8.26397329407025,
   "end_elevation_m": 11.127322452382918,
   "min_gradient_pct": 1.008951182077169,
   "suppressed_max_gradient_pct": 30.797122548188373,
   "suppressed_location_m": [
    313.0,
    323.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.635046545291466,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 9.0,
   "end_distance_m": 29.0,
   "start_elevation_m": 5.1261310756258105,
   "end_elevation_m": 10.653140384684104,
   "min_gradient_pct": 2.410328377729769
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 27.111523772944825,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 8.0,
   "end_distance_m": 33.0,
   "start_elevation_m": 4.886145390496915,
   "end_elevation_m": 11.664026333733121,
   "min_gradient_pct": 2.8418031421170156
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.421261874611574,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 5.0,
   "end_distance_m": 55.0,
   "start_elevation_m": 4.2893563159666925,
   "end_elevation_m": 15.49998725327248,
   "min_gradient_pct": 4.785378492389015
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.598561055559735,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 6.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 4.4516300635002,
   "end_elevation_m": 22.050191119059935,
   "min_gradient_pct": 6.487185268809369
  }
 ],
 "shape": {
  "ascent_concentration": 0.355,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 93.0,
  "shape_class": "sustained"
 },
 "length_m": 323.00000000018736,
 "start_elevation_m": 3.897107906557571,
 "end_elevation_m": 44.227281208689206,
 "endpoint_gain_m": 40.330173302131634,
 "overall_gradient_pct": 12.486121765358588,
 "accumulated_ascent_m": 40.7511885372317,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.31304262303511,
   "start_distance_m": 24.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 26.5,
   "start_elevation_m": 9.137488253532348,
   "end_elevation_m": 10.653140384684104,
   "start_xy": [
    1667728.0477422478,
    6120930.09222516
   ],
   "end_xy": [
    1667731.448728995,
    6120926.427079987
   ]
  },
  "max_10m": {
   "gradient_pct": 28.633491583126677,
   "start_distance_m": 21.0,
   "end_distance_m": 31.0,
   "midpoint_distance_m": 26.0,
   "start_elevation_m": 8.26397329407025,
   "end_elevation_m": 11.127322452382918,
   "start_xy": [
    1667726.0071501997,
    6120932.291312265
   ],
   "end_xy": [
    1667732.7535718058,
    6120924.928488747
   ]
  },
  "max_20m": {
   "gradient_pct": 27.635046545291466,
   "start_distance_m": 9.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 19.0,
   "start_elevation_m": 5.1261310756258105,
   "end_elevation_m": 10.653140384684104,
   "start_xy": [
    1667717.8447820067,
    6120941.087660682
   ],
   "end_xy": [
    1667731.448728995,
    6120926.427079987
   ]
  },
  "max_25m": {
   "gradient_pct": 27.111523772944825,
   "start_distance_m": 8.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 20.5,
   "start_elevation_m": 4.886145390496915,
   "end_elevation_m": 11.664026333733121,
   "start_xy": [
    1667717.1645846574,
    6120941.820689717
   ],
   "end_xy": [
    1667733.3666392334,
    6120923.024769144
   ]
  },
  "max_50m": {
   "gradient_pct": 22.421261874611574,
   "start_distance_m": 5.0,
   "end_distance_m": 55.0,
   "midpoint_distance_m": 30.0,
   "start_elevation_m": 4.2893563159666925,
   "end_elevation_m": 15.49998725327248,
   "start_xy": [
    1667715.7940769233,
    6120944.450615385
   ],
   "end_xy": [
    1667723.0042915056,
    6120906.86437392
   ]
  },
  "max_100m": {
   "gradient_pct": 17.598561055559735,
   "start_distance_m": 6.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 56.0,
   "start_elevation_m": 4.4516300635002,
   "end_elevation_m": 22.050191119059935,
   "start_xy": [
    1667716.1786923078,
    6120943.527538462
   ],
   "end_xy": [
    1667672.4451265503,
    6120905.010913625
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.3794295976082651,
   "start_distance_m": 290.0,
   "end_distance_m": 295.0,
   "midpoint_distance_m": 292.5,
   "start_elevation_m": 40.534652113705064,
   "end_elevation_m": 40.51568063382465,
   "start_xy": [
    1667556.4379927188,
    6120815.385327675
   ],
   "end_xy": [
    1667557.359080746,
    6120810.470900257
   ]
  },
  "min_10m": {
   "gradient_pct": 1.008951182077169,
   "start_distance_m": 290.0,
   "end_distance_m": 300.0,
   "midpoint_distance_m": 295.0,
   "start_elevation_m": 40.534652113705064,
   "end_elevation_m": 40.63554723191278,
   "start_xy": [
    1667556.4379927188,
    6120815.385327675
   ],
   "end_xy": [
    1667558.2801687734,
    6120805.55647284
   ]
  },
  "min_20m": {
   "gradient_pct": 2.410328377729769,
   "start_distance_m": 290.0,
   "end_distance_m": 310.0,
   "midpoint_distance_m": 300.0,
   "start_elevation_m": 40.534652113705064,
   "end_elevation_m": 41.01671778925102,
   "start_xy": [
    1667556.4379927188,
    6120815.385327675
   ],
   "end_xy": [
    1667560.122344828,
    6120795.727618003
   ]
  },
  "min_25m": {
   "gradient_pct": 2.8418031421170156,
   "start_distance_m": 291.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 303.5,
   "start_elevation_m": 40.5304902414268,
   "end_elevation_m": 41.24094102695605,
   "start_xy": [
    1667556.6222103243,
    6120814.402442192
   ],
   "end_xy": [
    1667562.5078762225,
    6120790.38696271
   ]
  },
  "min_50m": {
   "gradient_pct": 4.785378492389015,
   "start_distance_m": 266.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 291.0,
   "start_elevation_m": 38.848251780761544,
   "end_elevation_m": 41.24094102695605,
   "start_xy": [
    1667550.7469367485,
    6120838.587418564
   ],
   "end_xy": [
    1667562.5078762225,
    6120790.38696271
   ]
  },
  "min_100m": {
   "gradient_pct": 6.487185268809369,
   "start_distance_m": 216.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 266.0,
   "start_elevation_m": 34.75375575814668,
   "end_elevation_m": 41.24094102695605,
   "start_xy": [
    1667567.5600200915,
    6120876.287351687
   ],
   "end_xy": [
    1667562.5078762225,
    6120790.38696271
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 44.10023709982411,
   "start_distance_m": 316.0,
   "end_distance_m": 318.0,
   "midpoint_distance_m": 317.0,
   "start_elevation_m": 41.24094102695605,
   "end_elevation_m": 42.12294576895253,
   "start_xy": [
    1667562.5078762225,
    6120790.38696271
   ],
   "end_xy": [
    1667563.6942770483,
    6120788.776853061
   ]
  },
  "max_3m": {
   "gradient_pct": 31.14824088147327,
   "start_distance_m": 15.0,
   "end_distance_m": 18.0,
   "midpoint_distance_m": 16.5,
   "start_elevation_m": 6.73783780295976,
   "end_elevation_m": 7.672285029403958,
   "start_xy": [
    1667721.925966103,
    6120936.689486474
   ],
   "end_xy": [
    1667723.9665581514,
    6120934.490399369
   ]
  }
 },
 "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": 0.015,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.265,
   "obstruction_max_height_m": 15.22,
   "flagged_windows_m": [
    2
   ]
  },
  "excluded_ranges_m": [
   [
    319.0,
    323.0
   ]
  ],
  "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/AV28.tiff"
  ],
  "calculated_at": "2026-09-28T05:24:47+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": [
   "AV28"
  ],
  "route_summit_trim_m": 70.1,
  "route_summit_trim_loss_m": 4.8,
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 19,
   "stations_resolved": 19,
   "width_median_m": 4.75,
   "width_p10_m": 2.5,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.421,
   "unbounded_share": 0.579,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.62,
   "window_m": [
    8.0,
    33.0
   ],
   "width_at_max25_m": 3.75,
   "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": 19,
    "stations_resolved": 19,
    "width_median_m": 3.25,
    "width_p10_m": 1.65,
    "width_min_m": 1.25,
    "width_max_m": 12.0,
    "bounded_share": 0.842,
    "unbounded_share": 0.158,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.88,
    "window_m": [
     8.0,
     33.0
    ],
    "width_at_max25_m": 3.25,
    "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": "Bay of Islands",
  "county": "Northland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}