{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-41.6873, 173.1623)",
 "slug": "discovered-lane-41-6873-173-1623",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.201965097707443,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 281.0,
   "end_distance_m": 283.0,
   "start_elevation_m": 388.3010887242352,
   "end_elevation_m": 388.7451280261894,
   "min_gradient_pct": -7.208723592947308
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.66112735633116,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 281.0,
   "end_distance_m": 284.0,
   "start_elevation_m": 388.3010887242352,
   "end_elevation_m": 388.95092254492516,
   "min_gradient_pct": -7.00348264157545
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.214624884710247,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 274.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 386.8397297492039,
   "end_elevation_m": 387.9004609934394,
   "min_gradient_pct": -6.783187287765031
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.111927957212515,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 274.0,
   "end_distance_m": 284.0,
   "start_elevation_m": 386.8397297492039,
   "end_elevation_m": 388.95092254492516,
   "min_gradient_pct": -6.296957762000943
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.771995222239354,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 269.0,
   "end_distance_m": 289.0,
   "start_elevation_m": 385.82893123862146,
   "end_elevation_m": 389.98333028306934,
   "min_gradient_pct": -5.057869629426932
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.56826099102068,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 265.0,
   "end_distance_m": 290.0,
   "start_elevation_m": 385.04461338573196,
   "end_elevation_m": 390.18667863348713,
   "min_gradient_pct": -4.533494719524697
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.03212401588462,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 265.0,
   "end_distance_m": 315.0,
   "start_elevation_m": 385.04461338573196,
   "end_elevation_m": 395.0606753936743,
   "min_gradient_pct": -2.4463499418824313
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.254644893096156,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 265.0,
   "end_distance_m": 365.0,
   "start_elevation_m": 385.04461338573196,
   "end_elevation_m": 403.2992582788281,
   "min_gradient_pct": -0.913337098828606
  }
 ],
 "shape": {
  "ascent_concentration": 0.555,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 167.0,
  "shape_class": "stepped"
 },
 "length_m": 603.6359240099106,
 "start_elevation_m": 368.2637391509052,
 "end_elevation_m": 413.5294311065709,
 "endpoint_gain_m": 45.26569195566566,
 "overall_gradient_pct": 7.498839972109162,
 "accumulated_ascent_m": 47.07012588203463,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.214624884710247,
   "start_distance_m": 274.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 276.5,
   "start_elevation_m": 386.8397297492039,
   "end_elevation_m": 387.9004609934394,
   "start_xy": [
    1613574.4748926396,
    5384989.752240774
   ],
   "end_xy": [
    1613571.7652956867,
    5384985.597542902
   ]
  },
  "max_10m": {
   "gradient_pct": 21.111927957212515,
   "start_distance_m": 274.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 386.8397297492039,
   "end_elevation_m": 388.95092254492516,
   "start_xy": [
    1613574.4748926396,
    5384989.752240774
   ],
   "end_xy": [
    1613568.8218574333,
    5384981.555739933
   ]
  },
  "max_20m": {
   "gradient_pct": 20.771995222239354,
   "start_distance_m": 269.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 385.82893123862146,
   "end_elevation_m": 389.98333028306934,
   "start_xy": [
    1613575.8091590113,
    5384994.570926617
   ],
   "end_xy": [
    1613565.87841918,
    5384977.513936963
   ]
  },
  "max_25m": {
   "gradient_pct": 20.56826099102068,
   "start_distance_m": 265.0,
   "end_distance_m": 290.0,
   "midpoint_distance_m": 277.5,
   "start_elevation_m": 385.04461338573196,
   "end_elevation_m": 390.18667863348713,
   "start_xy": [
    1613576.8765721086,
    5384998.425875291
   ],
   "end_xy": [
    1613565.2897315293,
    5384976.705576369
   ]
  },
  "max_50m": {
   "gradient_pct": 20.03212401588462,
   "start_distance_m": 265.0,
   "end_distance_m": 315.0,
   "midpoint_distance_m": 290.0,
   "start_elevation_m": 385.04461338573196,
   "end_elevation_m": 395.0606753936743,
   "start_xy": [
    1613576.8765721086,
    5384998.425875291
   ],
   "end_xy": [
    1613546.3547674573,
    5384960.529719929
   ]
  },
  "max_100m": {
   "gradient_pct": 18.254644893096156,
   "start_distance_m": 265.0,
   "end_distance_m": 365.0,
   "midpoint_distance_m": 315.0,
   "start_elevation_m": 385.04461338573196,
   "end_elevation_m": 403.2992582788281,
   "start_xy": [
    1613576.8765721086,
    5384998.425875291
   ],
   "end_xy": [
    1613509.8987983544,
    5384928.244257001
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.783187287765031,
   "start_distance_m": 526.0,
   "end_distance_m": 531.0,
   "midpoint_distance_m": 528.5,
   "start_elevation_m": 413.2679338643801,
   "end_elevation_m": 412.92877449999185,
   "start_xy": [
    1613411.6677395864,
    5384914.003369004
   ],
   "end_xy": [
    1613409.6355112628,
    5384918.571743775
   ]
  },
  "min_10m": {
   "gradient_pct": -6.296957762000943,
   "start_distance_m": 524.0,
   "end_distance_m": 534.0,
   "midpoint_distance_m": 529.0,
   "start_elevation_m": 413.3912219772827,
   "end_elevation_m": 412.76152620108263,
   "start_xy": [
    1613412.4806309158,
    5384912.176019097
   ],
   "end_xy": [
    1613408.4161742688,
    5384921.312768637
   ]
  },
  "min_20m": {
   "gradient_pct": -5.057869629426932,
   "start_distance_m": 523.0,
   "end_distance_m": 543.0,
   "midpoint_distance_m": 533.0,
   "start_elevation_m": 413.438052681729,
   "end_elevation_m": 412.4264787558436,
   "start_xy": [
    1613412.8870765807,
    5384911.262344142
   ],
   "end_xy": [
    1613404.7581632864,
    5384929.535843223
   ]
  },
  "min_25m": {
   "gradient_pct": -4.533494719524697,
   "start_distance_m": 520.0,
   "end_distance_m": 545.0,
   "midpoint_distance_m": 532.5,
   "start_elevation_m": 413.5324389978647,
   "end_elevation_m": 412.3990653179835,
   "start_xy": [
    1613414.0863378963,
    5384908.51281943
   ],
   "end_xy": [
    1613403.945271957,
    5384931.363193132
   ]
  },
  "min_50m": {
   "gradient_pct": -2.4463499418824313,
   "start_distance_m": 513.0,
   "end_distance_m": 563.0,
   "midpoint_distance_m": 538.0,
   "start_elevation_m": 413.4543226648229,
   "end_elevation_m": 412.23114769388167,
   "start_xy": [
    1613416.69871693,
    5384902.018554592
   ],
   "end_xy": [
    1613390.8688450747,
    5384941.997447529
   ]
  },
  "min_100m": {
   "gradient_pct": -0.913337098828606,
   "start_distance_m": 464.0,
   "end_distance_m": 564.0,
   "midpoint_distance_m": 514.0,
   "start_elevation_m": 413.1689928365222,
   "end_elevation_m": 412.2556557376936,
   "start_xy": [
    1613446.5676488078,
    5384871.407266698
   ],
   "end_xy": [
    1613389.8886847487,
    5384942.195653824
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.201965097707443,
   "start_distance_m": 281.0,
   "end_distance_m": 283.0,
   "midpoint_distance_m": 282.0,
   "start_elevation_m": 388.3010887242352,
   "end_elevation_m": 388.7451280261894,
   "start_xy": [
    1613570.5879203854,
    5384983.980821715
   ],
   "end_xy": [
    1613569.410545084,
    5384982.364100527
   ]
  },
  "max_3m": {
   "gradient_pct": 21.66112735633116,
   "start_distance_m": 281.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 282.5,
   "start_elevation_m": 388.3010887242352,
   "end_elevation_m": 388.95092254492516,
   "start_xy": [
    1613570.5879203854,
    5384983.980821715
   ],
   "end_xy": [
    1613568.8218574333,
    5384981.555739933
   ]
  }
 },
 "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": 0.002,
   "obstruction_max_height_m": 2.68,
   "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-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/BR26.tiff"
  ],
  "calculated_at": "2026-09-28T05:07:08+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": [
   "BR26"
  ],
  "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": 30,
   "stations_resolved": 30,
   "width_median_m": 7.62,
   "width_p10_m": 4.25,
   "width_min_m": 3.5,
   "width_max_m": 12.0,
   "bounded_share": 0.133,
   "unbounded_share": 0.867,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.88,
   "window_m": [
    265.0,
    290.0
   ],
   "width_at_max25_m": 5.25,
   "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": 30,
    "stations_resolved": 30,
    "width_median_m": 10.0,
    "width_p10_m": 6.22,
    "width_min_m": 1.5,
    "width_max_m": 12.0,
    "bounded_share": 0.367,
    "unbounded_share": 0.633,
    "confidence_median": 0.0,
    "width_median_bounded_m": 7.25,
    "window_m": [
     265.0,
     290.0
    ],
    "width_at_max25_m": 9.75,
    "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": "Marlborough",
  "county": "Marlborough",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}