{
 "ocl_version": "0.1.0",
 "name": "Harrier Road",
 "slug": "harrier-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.621634675804557,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 602.0,
   "end_distance_m": 604.0,
   "start_elevation_m": 90.2489274704653,
   "end_elevation_m": 90.6813601639814,
   "min_gradient_pct": -7.811393018275226
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.07690060592115,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 235.0,
   "end_distance_m": 238.0,
   "start_elevation_m": 45.7517359045596,
   "end_elevation_m": 46.38404292273724,
   "min_gradient_pct": -7.645234499643531
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.771703440981213,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 248.0,
   "end_distance_m": 253.0,
   "start_elevation_m": 48.33608226108188,
   "end_elevation_m": 49.37466743313094,
   "min_gradient_pct": -7.121338417494769
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.42632068632642,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 244.0,
   "end_distance_m": 254.0,
   "start_elevation_m": 47.54911846087698,
   "end_elevation_m": 49.591750529509625,
   "min_gradient_pct": -6.652453134022096
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.214736760520182,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 245.0,
   "end_distance_m": 265.0,
   "start_elevation_m": 47.73380399307471,
   "end_elevation_m": 51.776751345178745,
   "min_gradient_pct": -5.872144463177307
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.067600044984573,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 245.0,
   "end_distance_m": 270.0,
   "start_elevation_m": 47.73380399307471,
   "end_elevation_m": 52.75070400432085,
   "min_gradient_pct": -5.471254119552157
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.940548688741373,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 235.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 45.7517359045596,
   "end_elevation_m": 55.72201024893029,
   "min_gradient_pct": -2.6555774034851254
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.590208151001896,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 231.0,
   "end_distance_m": 331.0,
   "start_elevation_m": 44.98336221118479,
   "end_elevation_m": 64.57357036218669,
   "min_gradient_pct": 2.5362684196693692
  }
 ],
 "shape": {
  "ascent_concentration": 0.348,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 411.0,
  "shape_class": "sustained"
 },
 "length_m": 665.4173512096702,
 "start_elevation_m": 11.68215069999158,
 "end_elevation_m": 101.19765928389441,
 "endpoint_gain_m": 89.51550858390283,
 "overall_gradient_pct": 13.452535979287513,
 "accumulated_ascent_m": 91.17379755706256,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.771703440981213,
   "start_distance_m": 248.0,
   "end_distance_m": 253.0,
   "midpoint_distance_m": 250.5,
   "start_elevation_m": 48.33608226108188,
   "end_elevation_m": 49.37466743313094,
   "start_xy": [
    1411692.9652552172,
    4919765.922785707
   ],
   "end_xy": [
    1411688.4935388009,
    4919768.159692565
   ]
  },
  "max_10m": {
   "gradient_pct": 20.42632068632642,
   "start_distance_m": 244.0,
   "end_distance_m": 254.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 47.54911846087698,
   "end_elevation_m": 49.591750529509625,
   "start_xy": [
    1411696.5426283502,
    4919764.13326022
   ],
   "end_xy": [
    1411687.5991955176,
    4919768.607073937
   ]
  },
  "max_20m": {
   "gradient_pct": 20.214736760520182,
   "start_distance_m": 245.0,
   "end_distance_m": 265.0,
   "midpoint_distance_m": 255.0,
   "start_elevation_m": 47.73380399307471,
   "end_elevation_m": 51.776751345178745,
   "start_xy": [
    1411695.648285067,
    4919764.580641592
   ],
   "end_xy": [
    1411677.7614194015,
    4919773.528269025
   ]
  },
  "max_25m": {
   "gradient_pct": 20.067600044984573,
   "start_distance_m": 245.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 257.5,
   "start_elevation_m": 47.73380399307471,
   "end_elevation_m": 52.75070400432085,
   "start_xy": [
    1411695.648285067,
    4919764.580641592
   ],
   "end_xy": [
    1411673.2897029852,
    4919775.765175882
   ]
  },
  "max_50m": {
   "gradient_pct": 19.940548688741373,
   "start_distance_m": 235.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 260.0,
   "start_elevation_m": 45.7517359045596,
   "end_elevation_m": 55.72201024893029,
   "start_xy": [
    1411704.5917178998,
    4919760.106827876
   ],
   "end_xy": [
    1411659.874553736,
    4919782.475896456
   ]
  },
  "max_100m": {
   "gradient_pct": 19.590208151001896,
   "start_distance_m": 231.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 281.0,
   "start_elevation_m": 44.98336221118479,
   "end_elevation_m": 64.57357036218669,
   "start_xy": [
    1411708.1690910328,
    4919758.31730239
   ],
   "end_xy": [
    1411618.7031049023,
    4919802.991992651
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.121338417494769,
   "start_distance_m": 459.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 461.5,
   "start_elevation_m": 79.53781559503042,
   "end_elevation_m": 79.18174867415568,
   "start_xy": [
    1411527.0392991737,
    4919788.9104925655
   ],
   "end_xy": [
    1411524.7516461075,
    4919784.464523217
   ]
  },
  "min_10m": {
   "gradient_pct": -6.652453134022096,
   "start_distance_m": 459.0,
   "end_distance_m": 469.0,
   "midpoint_distance_m": 464.0,
   "start_elevation_m": 79.53781559503042,
   "end_elevation_m": 78.87257028162821,
   "start_xy": [
    1411527.0392991737,
    4919788.9104925655
   ],
   "end_xy": [
    1411522.4639930413,
    4919780.018553868
   ]
  },
  "min_20m": {
   "gradient_pct": -5.872144463177307,
   "start_distance_m": 454.0,
   "end_distance_m": 474.0,
   "midpoint_distance_m": 464.0,
   "start_elevation_m": 79.79798017468681,
   "end_elevation_m": 78.62355128205135,
   "start_xy": [
    1411529.32695224,
    4919793.356461913
   ],
   "end_xy": [
    1411520.176339975,
    4919775.572584519
   ]
  },
  "min_25m": {
   "gradient_pct": -5.471254119552157,
   "start_distance_m": 453.0,
   "end_distance_m": 478.0,
   "midpoint_distance_m": 465.5,
   "start_elevation_m": 79.82782633799022,
   "end_elevation_m": 78.46001280810218,
   "start_xy": [
    1411529.7907005635,
    4919794.242412631
   ],
   "end_xy": [
    1411518.3462175222,
    4919772.0158090405
   ]
  },
  "min_50m": {
   "gradient_pct": -2.6555774034851254,
   "start_distance_m": 440.0,
   "end_distance_m": 490.0,
   "midpoint_distance_m": 465.0,
   "start_elevation_m": 79.86348405594231,
   "end_elevation_m": 78.53569535419975,
   "start_xy": [
    1411535.866794391,
    4919805.735066102
   ],
   "end_xy": [
    1411512.8558501631,
    4919761.345482604
   ]
  },
  "min_100m": {
   "gradient_pct": 2.5362684196693692,
   "start_distance_m": 404.0,
   "end_distance_m": 504.0,
   "midpoint_distance_m": 454.0,
   "start_elevation_m": 77.1451089126757,
   "end_elevation_m": 79.68137733234506,
   "start_xy": [
    1411553.3500101739,
    4919835.518489646
   ],
   "end_xy": [
    1411506.4504215776,
    4919748.896768427
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.621634675804557,
   "start_distance_m": 602.0,
   "end_distance_m": 604.0,
   "midpoint_distance_m": 603.0,
   "start_elevation_m": 90.2489274704653,
   "end_elevation_m": 90.6813601639814,
   "start_xy": [
    1411461.0688471294,
    4919662.083527333
   ],
   "end_xy": [
    1411459.9231410148,
    4919660.444211165
   ]
  },
  "max_3m": {
   "gradient_pct": 21.07690060592115,
   "start_distance_m": 235.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 236.5,
   "start_elevation_m": 45.7517359045596,
   "end_elevation_m": 46.38404292273724,
   "start_xy": [
    1411704.5917178998,
    4919760.106827876
   ],
   "end_xy": [
    1411701.90868805,
    4919761.4489719905
   ]
  }
 },
 "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": 0.037,
   "obstruction_max_height_m": 20.06,
   "flagged_windows_m": []
  },
  "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-s2",
   "road_pbf": "block-batch-nz-s2.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": "sha256:996c8a61eaf9687f"
  },
  "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/CE17.tiff"
  ],
  "calculated_at": "2026-09-28T05:09:12+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-s2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-s2",
  "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": [
   "CE17"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 32,
   "stations_resolved": 32,
   "width_median_m": 6.12,
   "width_p10_m": 4.28,
   "width_min_m": 2.5,
   "width_max_m": 12.0,
   "bounded_share": 0.062,
   "unbounded_share": 0.938,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.75,
   "window_m": [
    245.0,
    270.0
   ],
   "width_at_max25_m": 7.38,
   "window_stations": 6,
   "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": 32,
    "stations_resolved": 32,
    "width_median_m": 8.5,
    "width_p10_m": 3.43,
    "width_min_m": 0.75,
    "width_max_m": 11.75,
    "bounded_share": 0.625,
    "unbounded_share": 0.375,
    "confidence_median": 1.0,
    "width_median_bounded_m": 7.25,
    "window_m": [
     245.0,
     270.0
    ],
    "width_at_max25_m": 9.62,
    "window_stations": 6,
    "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": "Otago",
  "county": "Otago",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}