{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-36.6948, 174.6678)",
 "slug": "discovered-lane-36-6948-174-6678",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 20.7930608751397,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 139.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 74.93879631398116,
   "end_elevation_m": 75.35465753148395,
   "min_gradient_pct": -4.73292946113979
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.751283493702033,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 138.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 74.73211902667289,
   "end_elevation_m": 75.35465753148395,
   "min_gradient_pct": -4.227692908011704
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.4974179953345,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 137.0,
   "end_distance_m": 142.0,
   "start_elevation_m": 74.52997826668336,
   "end_elevation_m": 75.55484916645008,
   "min_gradient_pct": -3.7071414841442163
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.405357156100905,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 137.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 74.52997826668336,
   "end_elevation_m": 76.57051398229345,
   "min_gradient_pct": -2.7609449198872937
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.18415780524542,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 137.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 74.52997826668336,
   "end_elevation_m": 78.56680982773244,
   "min_gradient_pct": -0.646796158636711
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.097736033351907,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 136.0,
   "end_distance_m": 161.0,
   "start_elevation_m": 74.33650454997473,
   "end_elevation_m": 79.36093855831271,
   "min_gradient_pct": 0.14308839942489726
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.98727586184691,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 137.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 74.52997826668336,
   "end_elevation_m": 84.52361619760681,
   "min_gradient_pct": 2.4697370591891
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.59077512342408,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 118.0,
   "end_distance_m": 218.0,
   "start_elevation_m": 70.98488525193834,
   "end_elevation_m": 90.57566037536242,
   "min_gradient_pct": 6.48732741962457
  }
 ],
 "shape": {
  "ascent_concentration": 0.385,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 228.0,
  "shape_class": "sustained"
 },
 "length_m": 330.33328751000346,
 "start_elevation_m": 61.52521604828237,
 "end_elevation_m": 104.08894747981815,
 "endpoint_gain_m": 42.56373143153578,
 "overall_gradient_pct": 12.885086983626143,
 "accumulated_ascent_m": 42.83982592352451,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.4974179953345,
   "start_distance_m": 137.0,
   "end_distance_m": 142.0,
   "midpoint_distance_m": 139.5,
   "start_elevation_m": 74.52997826668336,
   "end_elevation_m": 75.55484916645008,
   "start_xy": [
    1749076.2056417556,
    5937763.105196561
   ],
   "end_xy": [
    1749072.3618253048,
    5937759.907529428
   ]
  },
  "max_10m": {
   "gradient_pct": 20.405357156100905,
   "start_distance_m": 137.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 142.0,
   "start_elevation_m": 74.52997826668336,
   "end_elevation_m": 76.57051398229345,
   "start_xy": [
    1749076.2056417556,
    5937763.105196561
   ],
   "end_xy": [
    1749068.518008854,
    5937756.709862295
   ]
  },
  "max_20m": {
   "gradient_pct": 20.18415780524542,
   "start_distance_m": 137.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 74.52997826668336,
   "end_elevation_m": 78.56680982773244,
   "start_xy": [
    1749076.2056417556,
    5937763.105196561
   ],
   "end_xy": [
    1749060.8303759526,
    5937750.3145280285
   ]
  },
  "max_25m": {
   "gradient_pct": 20.097736033351907,
   "start_distance_m": 136.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 148.5,
   "start_elevation_m": 74.33650454997473,
   "end_elevation_m": 79.36093855831271,
   "start_xy": [
    1749076.9744050456,
    5937763.744729987
   ],
   "end_xy": [
    1749057.755322792,
    5937747.756394322
   ]
  },
  "max_50m": {
   "gradient_pct": 19.98727586184691,
   "start_distance_m": 137.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 162.0,
   "start_elevation_m": 74.52997826668336,
   "end_elevation_m": 84.52361619760681,
   "start_xy": [
    1749076.2056417556,
    5937763.105196561
   ],
   "end_xy": [
    1749037.7674772486,
    5937731.128525231
   ]
  },
  "max_100m": {
   "gradient_pct": 19.59077512342408,
   "start_distance_m": 118.0,
   "end_distance_m": 218.0,
   "midpoint_distance_m": 168.0,
   "start_elevation_m": 70.98488525193834,
   "end_elevation_m": 90.57566037536242,
   "start_xy": [
    1749091.652746703,
    5937774.089598642
   ],
   "end_xy": [
    1749013.935815254,
    5937711.302989007
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.7071414841442163,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 61.46170766466696,
   "end_elevation_m": 61.27635059045975,
   "start_xy": [
    1749203.8886289666,
    5937791.695620058
   ],
   "end_xy": [
    1749198.9213439114,
    5937792.266653489
   ]
  },
  "min_10m": {
   "gradient_pct": -2.7609449198872937,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 61.52521604828237,
   "end_elevation_m": 61.24912155629364,
   "start_xy": [
    1749206.869,
    5937791.353
   ],
   "end_xy": [
    1749196.9344298893,
    5937792.495066862
   ]
  },
  "min_20m": {
   "gradient_pct": -0.646796158636711,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 61.52521604828237,
   "end_elevation_m": 61.395856816555025,
   "start_xy": [
    1749206.869,
    5937791.353
   ],
   "end_xy": [
    1749186.9998597784,
    5937793.637133722
   ]
  },
  "min_25m": {
   "gradient_pct": 0.14308839942489726,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 61.52521604828237,
   "end_elevation_m": 61.56098814813859,
   "start_xy": [
    1749206.869,
    5937791.353
   ],
   "end_xy": [
    1749182.0325747232,
    5937794.2081671525
   ]
  },
  "min_50m": {
   "gradient_pct": 2.4697370591891,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 61.52521604828237,
   "end_elevation_m": 62.76008457787692,
   "start_xy": [
    1749206.869,
    5937791.353
   ],
   "end_xy": [
    1749157.5559432127,
    5937790.494202438
   ]
  },
  "min_100m": {
   "gradient_pct": 6.48732741962457,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 61.52521604828237,
   "end_elevation_m": 68.01254346790694,
   "start_xy": [
    1749206.869,
    5937791.353
   ],
   "end_xy": [
    1749108.8038613135,
    5937779.393098416
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 20.7930608751397,
   "start_distance_m": 139.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 140.0,
   "start_elevation_m": 74.93879631398116,
   "end_elevation_m": 75.35465753148395,
   "start_xy": [
    1749074.6681151753,
    5937761.8261297075
   ],
   "end_xy": [
    1749073.130588595,
    5937760.547062854
   ]
  },
  "max_3m": {
   "gradient_pct": 20.751283493702033,
   "start_distance_m": 138.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 139.5,
   "start_elevation_m": 74.73211902667289,
   "end_elevation_m": 75.35465753148395,
   "start_xy": [
    1749075.4368784653,
    5937762.465663134
   ],
   "end_xy": [
    1749073.130588595,
    5937760.547062854
   ]
  }
 },
 "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": 0.102,
   "obstruction_max_height_m": 16.42,
   "flagged_windows_m": []
  },
  "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-n2",
   "road_pbf": "block-batch-nz-n2.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": "sha256:1ffe0b32a690b9c1"
  },
  "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/BA31.tiff"
  ],
  "calculated_at": "2026-09-28T05:03:37+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n2",
  "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": [
   "BA31"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 20,
   "stations_resolved": 20,
   "width_median_m": 7.88,
   "width_p10_m": 5.4,
   "width_min_m": 3.75,
   "width_max_m": 12.0,
   "bounded_share": 0.05,
   "unbounded_share": 0.95,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    136.0,
    161.0
   ],
   "width_at_max25_m": 8.75,
   "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": 20,
    "stations_resolved": 20,
    "width_median_m": 10.0,
    "width_p10_m": 4.78,
    "width_min_m": 2.25,
    "width_max_m": 12.0,
    "bounded_share": 0.2,
    "unbounded_share": 0.8,
    "confidence_median": 0.0,
    "width_median_bounded_m": 3.88,
    "window_m": [
     136.0,
     161.0
    ],
    "width_at_max25_m": 10.0,
    "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": "Rodney",
  "county": "Auckland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}