{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-36.8450, 175.8094)",
 "slug": "discovered-lane-36-8450-175-8094",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.32651293381427,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 424.0,
   "end_distance_m": 426.0,
   "start_elevation_m": 43.11380426854577,
   "end_elevation_m": 43.620334527222056,
   "min_gradient_pct": -5.928095795160093
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.974894965660372,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 424.0,
   "end_distance_m": 427.0,
   "start_elevation_m": 43.11380426854577,
   "end_elevation_m": 43.86305111751558,
   "min_gradient_pct": -4.551345660067281
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.307885746634526,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 422.0,
   "end_distance_m": 427.0,
   "start_elevation_m": 42.647656830183855,
   "end_elevation_m": 43.86305111751558,
   "min_gradient_pct": -1.7113836745024358
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.124794755706688,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 417.0,
   "end_distance_m": 427.0,
   "start_elevation_m": 41.55057164194491,
   "end_elevation_m": 43.86305111751558,
   "min_gradient_pct": -0.5124803407036982
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.239795460644842,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 408.0,
   "end_distance_m": 428.0,
   "start_elevation_m": 39.62585674346881,
   "end_elevation_m": 44.07381583559778,
   "min_gradient_pct": 0.21019896110213598
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.850874525244905,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 403.0,
   "end_distance_m": 428.0,
   "start_elevation_m": 38.61109720428655,
   "end_elevation_m": 44.07381583559778,
   "min_gradient_pct": 0.3682187867804103
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.533512125230942,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 378.0,
   "end_distance_m": 428.0,
   "start_elevation_m": 33.307059772982306,
   "end_elevation_m": 44.07381583559778,
   "min_gradient_pct": 0.717817524218126
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.623170004555856,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 329.0,
   "end_distance_m": 429.0,
   "start_elevation_m": 23.6498986850749,
   "end_elevation_m": 44.273068689630755,
   "min_gradient_pct": 1.481448627094722
  }
 ],
 "shape": {
  "ascent_concentration": 0.516,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 181.0,
  "shape_class": "stepped"
 },
 "length_m": 429.47219155122286,
 "start_elevation_m": 1.8315194799314485,
 "end_elevation_m": 44.37222547471311,
 "endpoint_gain_m": 42.54070599478166,
 "overall_gradient_pct": 9.905345871435276,
 "accumulated_ascent_m": 42.8726063849046,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.307885746634526,
   "start_distance_m": 422.0,
   "end_distance_m": 427.0,
   "midpoint_distance_m": 424.5,
   "start_elevation_m": 42.647656830183855,
   "end_elevation_m": 43.86305111751558,
   "start_xy": [
    1850530.5137412602,
    5918581.127407898
   ],
   "end_xy": [
    1850533.2587583757,
    5918576.948307392
   ]
  },
  "max_10m": {
   "gradient_pct": 23.124794755706688,
   "start_distance_m": 417.0,
   "end_distance_m": 427.0,
   "midpoint_distance_m": 422.0,
   "start_elevation_m": 41.55057164194491,
   "end_elevation_m": 43.86305111751558,
   "start_xy": [
    1850527.7687241447,
    5918585.306508403
   ],
   "end_xy": [
    1850533.2587583757,
    5918576.948307392
   ]
  },
  "max_20m": {
   "gradient_pct": 22.239795460644842,
   "start_distance_m": 408.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 418.0,
   "start_elevation_m": 39.62585674346881,
   "end_elevation_m": 44.07381583559778,
   "start_xy": [
    1850522.8276933366,
    5918592.828889313
   ],
   "end_xy": [
    1850533.8077617988,
    5918576.112487291
   ]
  },
  "max_25m": {
   "gradient_pct": 21.850874525244905,
   "start_distance_m": 403.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 415.5,
   "start_elevation_m": 38.61109720428655,
   "end_elevation_m": 44.07381583559778,
   "start_xy": [
    1850520.265567544,
    5918597.1210973915
   ],
   "end_xy": [
    1850533.8077617988,
    5918576.112487291
   ]
  },
  "max_50m": {
   "gradient_pct": 21.533512125230942,
   "start_distance_m": 378.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 403.0,
   "start_elevation_m": 33.307059772982306,
   "end_elevation_m": 44.07381583559778,
   "start_xy": [
    1850510.9993764742,
    5918620.182786529
   ],
   "end_xy": [
    1850533.8077617988,
    5918576.112487291
   ]
  },
  "max_100m": {
   "gradient_pct": 20.623170004555856,
   "start_distance_m": 329.0,
   "end_distance_m": 429.0,
   "midpoint_distance_m": 379.0,
   "start_elevation_m": 23.6498986850749,
   "end_elevation_m": 44.273068689630755,
   "start_xy": [
    1850513.2308243446,
    5918668.21837425
   ],
   "end_xy": [
    1850534.356765222,
    5918575.276667191
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.7113836745024358,
   "start_distance_m": 198.0,
   "end_distance_m": 203.0,
   "midpoint_distance_m": 200.5,
   "start_elevation_m": 8.064865050680726,
   "end_elevation_m": 7.979295866955605,
   "start_xy": [
    1850510.5142843872,
    5918765.862333157
   ],
   "end_xy": [
    1850509.5755243725,
    5918760.951250829
   ]
  },
  "min_10m": {
   "gradient_pct": -0.5124803407036982,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 1.8315194799314485,
   "end_elevation_m": 1.7802714458610787,
   "start_xy": [
    1850629.02,
    5918884.127
   ],
   "end_xy": [
    1850619.0202003631,
    5918884.190302613
   ]
  },
  "min_20m": {
   "gradient_pct": 0.21019896110213598,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 1.8315194799314485,
   "end_elevation_m": 1.8735592721518757,
   "start_xy": [
    1850629.02,
    5918884.127
   ],
   "end_xy": [
    1850609.020400726,
    5918884.253605225
   ]
  },
  "min_25m": {
   "gradient_pct": 0.3682187867804103,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 1.8315194799314485,
   "end_elevation_m": 1.923574176626551,
   "start_xy": [
    1850629.02,
    5918884.127
   ],
   "end_xy": [
    1850604.0205009077,
    5918884.285256532
   ]
  },
  "min_50m": {
   "gradient_pct": 0.717817524218126,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 1.8315194799314485,
   "end_elevation_m": 2.1904282420405115,
   "start_xy": [
    1850629.02,
    5918884.127
   ],
   "end_xy": [
    1850579.048126038,
    5918883.873736469
   ]
  },
  "min_100m": {
   "gradient_pct": 1.481448627094722,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 1.8315194799314485,
   "end_elevation_m": 3.3129681070261703,
   "start_xy": [
    1850629.02,
    5918884.127
   ],
   "end_xy": [
    1850536.934638856,
    5918859.481160474
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.32651293381427,
   "start_distance_m": 424.0,
   "end_distance_m": 426.0,
   "midpoint_distance_m": 425.0,
   "start_elevation_m": 43.11380426854577,
   "end_elevation_m": 43.620334527222056,
   "start_xy": [
    1850531.6117481063,
    5918579.455767696
   ],
   "end_xy": [
    1850532.7097549527,
    5918577.784127493
   ]
  },
  "max_3m": {
   "gradient_pct": 24.974894965660372,
   "start_distance_m": 424.0,
   "end_distance_m": 427.0,
   "midpoint_distance_m": 425.5,
   "start_elevation_m": 43.11380426854577,
   "end_elevation_m": 43.86305111751558,
   "start_xy": [
    1850531.6117481063,
    5918579.455767696
   ],
   "end_xy": [
    1850533.2587583757,
    5918576.948307392
   ]
  }
 },
 "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": 0.007,
   "obstruction_max_height_m": 6.12,
   "flagged_windows_m": []
  },
  "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-n4",
   "road_pbf": "block-batch-nz-n4.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": "sha256:390129777b339b3d"
  },
  "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/BA35.tiff"
  ],
  "calculated_at": "2026-09-28T05:56:37+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n4",
  "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": [
   "BA35"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 24,
   "stations_resolved": 24,
   "width_median_m": 9.0,
   "width_p10_m": 5.33,
   "width_min_m": 5.25,
   "width_max_m": 12.0,
   "bounded_share": 0.0,
   "unbounded_share": 1.0,
   "confidence_median": 0.0,
   "window_m": [
    403.0,
    428.0
   ],
   "width_at_max25_m": 5.5,
   "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": 24,
    "stations_resolved": 24,
    "width_median_m": 8.38,
    "width_p10_m": 1.9,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.5,
    "unbounded_share": 0.5,
    "confidence_median": 0.433,
    "width_median_bounded_m": 5.75,
    "window_m": [
     403.0,
     428.0
    ],
    "width_at_max25_m": 7.25,
    "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": "Waikato",
  "county": "Waikato",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}