{
 "ocl_version": "0.1.0",
 "name": "Old Port Levy Road",
 "slug": "old-port-levy-road-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.785468172078566,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 712.0,
   "end_distance_m": 714.0,
   "start_elevation_m": 75.2109013372673,
   "end_elevation_m": 75.80661070070887,
   "min_gradient_pct": -8.243808102832872
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.045563690784586,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 712.0,
   "end_distance_m": 715.0,
   "start_elevation_m": 75.2109013372673,
   "end_elevation_m": 76.08226824799084,
   "min_gradient_pct": -5.0459849541690955
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.767231520492373,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 708.0,
   "end_distance_m": 713.0,
   "start_elevation_m": 74.0893576018967,
   "end_elevation_m": 75.52771917792131,
   "min_gradient_pct": -2.8156966241095915
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.479203842106386,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 704.0,
   "end_distance_m": 714.0,
   "start_elevation_m": 72.95869031649823,
   "end_elevation_m": 75.80661070070887,
   "min_gradient_pct": -0.6386388769169571
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.46945185719817,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 698.0,
   "end_distance_m": 718.0,
   "start_elevation_m": 71.37976161548575,
   "end_elevation_m": 76.87365198692538,
   "min_gradient_pct": 0.5590938487598862
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.949703722561253,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 696.0,
   "end_distance_m": 721.0,
   "start_elevation_m": 70.88381387572127,
   "end_elevation_m": 77.62123980636159,
   "min_gradient_pct": 0.8564817633692473
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 25.42708869519265,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 680.0,
   "end_distance_m": 730.0,
   "start_elevation_m": 67.05939376534951,
   "end_elevation_m": 79.77293811294584,
   "min_gradient_pct": 0.9339754702302798
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 23.380597616586275,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 685.0,
   "end_distance_m": 785.0,
   "start_elevation_m": 68.21363463329925,
   "end_elevation_m": 91.59423224988552,
   "min_gradient_pct": 2.1922108932648143
  }
 ],
 "shape": {
  "ascent_concentration": 0.4,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 641.0,
  "shape_class": "sustained"
 },
 "length_m": 1770.0106747570119,
 "start_elevation_m": 1.634592328300217,
 "end_elevation_m": 212.83902905837564,
 "endpoint_gain_m": 211.20443673007543,
 "overall_gradient_pct": 11.93238208911196,
 "accumulated_ascent_m": 211.6656444089538,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.767231520492373,
   "start_distance_m": 708.0,
   "end_distance_m": 713.0,
   "midpoint_distance_m": 710.5,
   "start_elevation_m": 74.0893576018967,
   "end_elevation_m": 75.52771917792131,
   "start_xy": [
    1584243.9071827014,
    5165645.276176215
   ],
   "end_xy": [
    1584244.8553607345,
    5165640.366903517
   ]
  },
  "max_10m": {
   "gradient_pct": 28.479203842106386,
   "start_distance_m": 704.0,
   "end_distance_m": 714.0,
   "midpoint_distance_m": 709.0,
   "start_elevation_m": 72.95869031649823,
   "end_elevation_m": 75.80661070070887,
   "start_xy": [
    1584243.1486402748,
    5165649.203594373
   ],
   "end_xy": [
    1584245.0449963412,
    5165639.385048978
   ]
  },
  "max_20m": {
   "gradient_pct": 27.46945185719817,
   "start_distance_m": 698.0,
   "end_distance_m": 718.0,
   "midpoint_distance_m": 708.0,
   "start_elevation_m": 71.37976161548575,
   "end_elevation_m": 76.87365198692538,
   "start_xy": [
    1584242.010826635,
    5165655.09472161
   ],
   "end_xy": [
    1584245.8035387679,
    5165635.45763082
   ]
  },
  "max_25m": {
   "gradient_pct": 26.949703722561253,
   "start_distance_m": 696.0,
   "end_distance_m": 721.0,
   "midpoint_distance_m": 708.5,
   "start_elevation_m": 70.88381387572127,
   "end_elevation_m": 77.62123980636159,
   "start_xy": [
    1584241.6315554217,
    5165657.058430688
   ],
   "end_xy": [
    1584246.3724455878,
    5165632.512067202
   ]
  },
  "max_50m": {
   "gradient_pct": 25.42708869519265,
   "start_distance_m": 680.0,
   "end_distance_m": 730.0,
   "midpoint_distance_m": 705.0,
   "start_elevation_m": 67.05939376534951,
   "end_elevation_m": 79.77293811294584,
   "start_xy": [
    1584238.5973857155,
    5165672.76810332
   ],
   "end_xy": [
    1584248.0791660475,
    5165623.675376346
   ]
  },
  "max_100m": {
   "gradient_pct": 23.380597616586275,
   "start_distance_m": 685.0,
   "end_distance_m": 785.0,
   "midpoint_distance_m": 735.0,
   "start_elevation_m": 68.21363463329925,
   "end_elevation_m": 91.59423224988552,
   "start_xy": [
    1584239.5455637488,
    5165667.858830622
   ],
   "end_xy": [
    1584218.9335873947,
    5165591.893692925
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.8156966241095915,
   "start_distance_m": 1202.0,
   "end_distance_m": 1207.0,
   "midpoint_distance_m": 1204.5,
   "start_elevation_m": 156.8404075156474,
   "end_elevation_m": 156.69962268444192,
   "start_xy": [
    1583809.3936846284,
    5165572.155418724
   ],
   "end_xy": [
    1583804.4884655839,
    5165571.188169722
   ]
  },
  "min_10m": {
   "gradient_pct": -0.6386388769169571,
   "start_distance_m": 1198.0,
   "end_distance_m": 1208.0,
   "midpoint_distance_m": 1203.0,
   "start_elevation_m": 156.7769831855652,
   "end_elevation_m": 156.7131192978735,
   "start_xy": [
    1583813.3244523495,
    5165572.896408011
   ],
   "end_xy": [
    1583803.5104878785,
    5165570.979460337
   ]
  },
  "min_20m": {
   "gradient_pct": 0.5590938487598862,
   "start_distance_m": 1188.0,
   "end_distance_m": 1208.0,
   "midpoint_distance_m": 1198.0,
   "start_elevation_m": 156.60130052812153,
   "end_elevation_m": 156.7131192978735,
   "start_xy": [
    1583823.151371652,
    5165574.748881228
   ],
   "end_xy": [
    1583803.5104878785,
    5165570.979460337
   ]
  },
  "min_25m": {
   "gradient_pct": 0.8564817633692473,
   "start_distance_m": 17.0,
   "end_distance_m": 42.0,
   "midpoint_distance_m": 29.5,
   "start_elevation_m": 1.96469794852297,
   "end_elevation_m": 2.178818389365282,
   "start_xy": [
    1584762.0325662852,
    5165973.111997161
   ],
   "end_xy": [
    1584737.4613402341,
    5165968.501698869
   ]
  },
  "min_50m": {
   "gradient_pct": 0.9339754702302798,
   "start_distance_m": 1158.0,
   "end_distance_m": 1208.0,
   "midpoint_distance_m": 1183.0,
   "start_elevation_m": 156.24613156275836,
   "end_elevation_m": 156.7131192978735,
   "start_xy": [
    1583852.7975760694,
    5165579.228989334
   ],
   "end_xy": [
    1583803.5104878785,
    5165570.979460337
   ]
  },
  "min_100m": {
   "gradient_pct": 2.1922108932648143,
   "start_distance_m": 1156.0,
   "end_distance_m": 1256.0,
   "midpoint_distance_m": 1206.0,
   "start_elevation_m": 156.16540796320447,
   "end_elevation_m": 158.3576188564693,
   "start_xy": [
    1583854.7864906834,
    5165579.439271664
   ],
   "end_xy": [
    1583756.3289699713,
    5165562.244735575
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.785468172078566,
   "start_distance_m": 712.0,
   "end_distance_m": 714.0,
   "midpoint_distance_m": 713.0,
   "start_elevation_m": 75.2109013372673,
   "end_elevation_m": 75.80661070070887,
   "start_xy": [
    1584244.665725128,
    5165641.348758057
   ],
   "end_xy": [
    1584245.0449963412,
    5165639.385048978
   ]
  },
  "max_3m": {
   "gradient_pct": 29.045563690784586,
   "start_distance_m": 712.0,
   "end_distance_m": 715.0,
   "midpoint_distance_m": 713.5,
   "start_elevation_m": 75.2109013372673,
   "end_elevation_m": 76.08226824799084,
   "start_xy": [
    1584244.665725128,
    5165641.348758057
   ],
   "end_xy": [
    1584245.234631948,
    5165638.403194439
   ]
  }
 },
 "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": 0.227,
   "obstruction_max_height_m": 29.28,
   "flagged_windows_m": [
    100
   ]
  },
  "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-s3",
   "road_pbf": "block-batch-nz-s3.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": "sha256:65f98740b9968e3e"
  },
  "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/BX24.tiff"
  ],
  "calculated_at": "2026-09-28T05:30:22+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-s3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-s3",
  "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": [
   "BX24"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 77,
   "stations_resolved": 77,
   "width_median_m": 6.75,
   "width_p10_m": 4.9,
   "width_min_m": 3.5,
   "width_max_m": 12.0,
   "bounded_share": 0.078,
   "unbounded_share": 0.922,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.38,
   "window_m": [
    696.0,
    721.0
   ],
   "width_at_max25_m": 5.0,
   "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": 77,
    "stations_resolved": 77,
    "width_median_m": 7.0,
    "width_p10_m": 1.15,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.558,
    "unbounded_share": 0.442,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     696.0,
     721.0
    ],
    "width_at_max25_m": 7.5,
    "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": "Banks Peninsula Community",
  "county": "Canterbury",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}