{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-39.5162, 176.8114)",
 "slug": "discovered-lane-39-5162-176-8114",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.36534321248557,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 478.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 27.704233457673126,
   "end_elevation_m": 28.471540321922838,
   "min_gradient_pct": -13.059037535519913
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.724023673422465,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 477.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 27.459819611720164,
   "end_elevation_m": 28.471540321922838,
   "min_gradient_pct": -9.741473332390882
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.772189187106108,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 475.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 27.032930862567532,
   "end_elevation_m": 28.471540321922838,
   "min_gradient_pct": -7.159712914089695
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.59661491513188,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 461.0,
   "end_distance_m": 471.0,
   "start_elevation_m": 24.237884990701637,
   "end_elevation_m": 26.697546482214825,
   "min_gradient_pct": -4.941564085293315
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.092826835350294,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 650.0,
   "end_distance_m": 670.0,
   "start_elevation_m": 54.66404066681938,
   "end_elevation_m": 59.08260603388944,
   "min_gradient_pct": -3.9975911886103432
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.018576485150135,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 645.0,
   "end_distance_m": 670.0,
   "start_elevation_m": 53.57796191260191,
   "end_elevation_m": 59.08260603388944,
   "min_gradient_pct": -3.6191060064603704
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.2986796029505,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 723.0,
   "end_distance_m": 773.0,
   "start_elevation_m": 69.67704766187732,
   "end_elevation_m": 80.32638746335257,
   "min_gradient_pct": -2.3692001807161276
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.75645598255184,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 642.0,
   "end_distance_m": 742.0,
   "start_elevation_m": 52.96043809785591,
   "end_elevation_m": 73.71689408040776,
   "min_gradient_pct": -1.9312574383122263
  }
 ],
 "shape": {
  "ascent_concentration": 0.537,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 285.0,
  "shape_class": "stepped"
 },
 "length_m": 968.7462718913639,
 "start_elevation_m": 21.81937249192113,
 "end_elevation_m": 98.6245622312031,
 "endpoint_gain_m": 76.80518973928197,
 "overall_gradient_pct": 7.928308161571431,
 "accumulated_ascent_m": 84.06534458954798,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.772189187106108,
   "start_distance_m": 475.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 477.5,
   "start_elevation_m": 27.032930862567532,
   "end_elevation_m": 28.471540321922838,
   "start_xy": [
    1927546.756748725,
    5618882.963619546
   ],
   "end_xy": [
    1927549.566854504,
    5618887.089317438
   ]
  },
  "max_10m": {
   "gradient_pct": 24.59661491513188,
   "start_distance_m": 461.0,
   "end_distance_m": 471.0,
   "midpoint_distance_m": 466.0,
   "start_elevation_m": 24.237884990701637,
   "end_elevation_m": 26.697546482214825,
   "start_xy": [
    1927540.4631665845,
    5618870.494853304
   ],
   "end_xy": [
    1927544.7520585735,
    5618879.502230028
   ]
  },
  "max_20m": {
   "gradient_pct": 22.092826835350294,
   "start_distance_m": 650.0,
   "end_distance_m": 670.0,
   "midpoint_distance_m": 660.0,
   "start_elevation_m": 54.66404066681938,
   "end_elevation_m": 59.08260603388944,
   "start_xy": [
    1927673.662976835,
    5618998.974100737
   ],
   "end_xy": [
    1927692.7025880585,
    5619005.0169014055
   ]
  },
  "max_25m": {
   "gradient_pct": 22.018576485150135,
   "start_distance_m": 645.0,
   "end_distance_m": 670.0,
   "midpoint_distance_m": 657.5,
   "start_elevation_m": 53.57796191260191,
   "end_elevation_m": 59.08260603388944,
   "start_xy": [
    1927668.9883254822,
    5618997.201286614
   ],
   "end_xy": [
    1927692.7025880585,
    5619005.0169014055
   ]
  },
  "max_50m": {
   "gradient_pct": 21.2986796029505,
   "start_distance_m": 723.0,
   "end_distance_m": 773.0,
   "midpoint_distance_m": 748.0,
   "start_elevation_m": 69.67704766187732,
   "end_elevation_m": 80.32638746335257,
   "start_xy": [
    1927744.9301497329,
    5619012.9123256905
   ],
   "end_xy": [
    1927794.8882031215,
    5619012.764703865
   ]
  },
  "max_100m": {
   "gradient_pct": 20.75645598255184,
   "start_distance_m": 642.0,
   "end_distance_m": 742.0,
   "midpoint_distance_m": 692.0,
   "start_elevation_m": 52.96043809785591,
   "end_elevation_m": 73.71689408040776,
   "start_xy": [
    1927666.2084110216,
    5618996.073423328
   ],
   "end_xy": [
    1927763.912276368,
    5619013.706066245
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.159712914089695,
   "start_distance_m": 362.0,
   "end_distance_m": 367.0,
   "midpoint_distance_m": 364.5,
   "start_elevation_m": 20.540213653888436,
   "end_elevation_m": 20.18222800818395,
   "start_xy": [
    1927556.54719106,
    5618774.276710154
   ],
   "end_xy": [
    1927555.8117605525,
    5618779.222207447
   ]
  },
  "min_10m": {
   "gradient_pct": -4.941564085293315,
   "start_distance_m": 362.0,
   "end_distance_m": 372.0,
   "midpoint_distance_m": 367.0,
   "start_elevation_m": 20.540213653888436,
   "end_elevation_m": 20.046057245359105,
   "start_xy": [
    1927556.54719106,
    5618774.276710154
   ],
   "end_xy": [
    1927554.9574435484,
    5618784.14868108
   ]
  },
  "min_20m": {
   "gradient_pct": -3.9975911886103432,
   "start_distance_m": 32.0,
   "end_distance_m": 52.0,
   "midpoint_distance_m": 42.0,
   "start_elevation_m": 21.593842227415344,
   "end_elevation_m": 20.794323989693275,
   "start_xy": [
    1927685.9624076588,
    5618474.589564003
   ],
   "end_xy": [
    1927676.7632792185,
    5618492.348393805
   ]
  },
  "min_25m": {
   "gradient_pct": -3.6191060064603704,
   "start_distance_m": 32.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 44.5,
   "start_elevation_m": 21.593842227415344,
   "end_elevation_m": 20.68906572580025,
   "start_xy": [
    1927685.9624076588,
    5618474.589564003
   ],
   "end_xy": [
    1927674.4634971083,
    5618496.788101256
   ]
  },
  "min_50m": {
   "gradient_pct": -2.3692001807161276,
   "start_distance_m": 14.0,
   "end_distance_m": 64.0,
   "midpoint_distance_m": 39.0,
   "start_elevation_m": 21.75478662709163,
   "end_elevation_m": 20.570186536733566,
   "start_xy": [
    1927693.502959757,
    5618458.330727775
   ],
   "end_xy": [
    1927671.2438021542,
    5618503.003691686
   ]
  },
  "min_100m": {
   "gradient_pct": -1.9312574383122263,
   "start_distance_m": 30.0,
   "end_distance_m": 130.0,
   "midpoint_distance_m": 80.0,
   "start_elevation_m": 21.601370665997475,
   "end_elevation_m": 19.67011322768525,
   "start_xy": [
    1927686.8823205028,
    5618472.813681023
   ],
   "end_xy": [
    1927639.5681996602,
    5618560.544201081
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.36534321248557,
   "start_distance_m": 478.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 479.0,
   "start_elevation_m": 27.704233457673126,
   "end_elevation_m": 28.471540321922838,
   "start_xy": [
    1927548.3678408368,
    5618885.488578164
   ],
   "end_xy": [
    1927549.566854504,
    5618887.089317438
   ]
  },
  "max_3m": {
   "gradient_pct": 33.724023673422465,
   "start_distance_m": 477.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 478.5,
   "start_elevation_m": 27.459819611720164,
   "end_elevation_m": 28.471540321922838,
   "start_xy": [
    1927547.768334003,
    5618884.688208526
   ],
   "end_xy": [
    1927549.566854504,
    5618887.089317438
   ]
  }
 },
 "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": 0.052,
   "obstruction_max_height_m": 22.14,
   "flagged_windows_m": [
    5,
    10
   ]
  },
  "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-n5",
   "road_pbf": "block-batch-nz-n5.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": "sha256:5991b43afbe40ae2"
  },
  "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/BK39.tiff"
  ],
  "calculated_at": "2026-09-28T05:39:39+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n5",
  "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": [
   "BK39"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 44,
   "stations_resolved": 44,
   "width_median_m": 4.75,
   "width_p10_m": 2.75,
   "width_min_m": 1.25,
   "width_max_m": 12.0,
   "bounded_share": 0.091,
   "unbounded_share": 0.909,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.38,
   "window_m": [
    645.0,
    670.0
   ],
   "width_at_max25_m": 4.12,
   "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": 44,
    "stations_resolved": 44,
    "width_median_m": 7.88,
    "width_p10_m": 4.08,
    "width_min_m": 2.0,
    "width_max_m": 12.0,
    "bounded_share": 0.614,
    "unbounded_share": 0.386,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.25,
    "window_m": [
     645.0,
     670.0
    ],
    "width_at_max25_m": 8.0,
    "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": "Hawke's Bay",
  "county": "Hawke's Bay",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}