{
 "ocl_version": "0.1.0",
 "name": "Richmond Hill Road",
 "slug": "richmond-hill-road-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 17.969601330486995,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 719.0,
   "end_distance_m": 721.0,
   "start_elevation_m": 66.01557131997443,
   "end_elevation_m": 66.37496334658417,
   "min_gradient_pct": -5.836548645382322
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 17.979636547934774,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1060.0,
   "end_distance_m": 1063.0,
   "start_elevation_m": 117.65808434236874,
   "end_elevation_m": 118.19747343880678,
   "min_gradient_pct": -5.443337578932035
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.656304086295904,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1060.0,
   "end_distance_m": 1065.0,
   "start_elevation_m": 117.65808434236874,
   "end_elevation_m": 118.54089954668353,
   "min_gradient_pct": -5.3480429418743824
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.267384274439337,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1059.0,
   "end_distance_m": 1069.0,
   "start_elevation_m": 117.49350900641826,
   "end_elevation_m": 119.2202474338622,
   "min_gradient_pct": -5.112259507565398
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.020706515096435,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1052.0,
   "end_distance_m": 1072.0,
   "start_elevation_m": 116.31827980374531,
   "end_elevation_m": 119.7224211067646,
   "min_gradient_pct": -4.930683736369161
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.89242070625363,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1047.0,
   "end_distance_m": 1072.0,
   "start_elevation_m": 115.49931593020119,
   "end_elevation_m": 119.7224211067646,
   "min_gradient_pct": -4.8519478413356865
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.64492827353027,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1045.0,
   "end_distance_m": 1095.0,
   "start_elevation_m": 115.16569864878512,
   "end_elevation_m": 123.48816278555026,
   "min_gradient_pct": -4.1995667764667814
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.353187400117235,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1777.0,
   "end_distance_m": 1877.0,
   "start_elevation_m": 182.70949656956287,
   "end_elevation_m": 199.0626839696801,
   "min_gradient_pct": 0.9248617229655167
  }
 ],
 "shape": {
  "ascent_concentration": 0.363,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 548.0,
  "shape_class": "sustained"
 },
 "length_m": 1893.4766853087413,
 "start_elevation_m": 2.674066293937875,
 "end_elevation_m": 201.1942729457966,
 "endpoint_gain_m": 198.52020665185873,
 "overall_gradient_pct": 10.484428363557535,
 "accumulated_ascent_m": 201.4983231271044,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.656304086295904,
   "start_distance_m": 1060.0,
   "end_distance_m": 1065.0,
   "midpoint_distance_m": 1062.5,
   "start_elevation_m": 117.65808434236874,
   "end_elevation_m": 118.54089954668353,
   "start_xy": [
    1580187.6468901215,
    5175504.686675753
   ],
   "end_xy": [
    1580185.4446727985,
    5175500.19777401
   ]
  },
  "max_10m": {
   "gradient_pct": 17.267384274439337,
   "start_distance_m": 1059.0,
   "end_distance_m": 1069.0,
   "midpoint_distance_m": 1064.0,
   "start_elevation_m": 117.49350900641826,
   "end_elevation_m": 119.2202474338622,
   "start_xy": [
    1580188.0873335863,
    5175505.584456102
   ],
   "end_xy": [
    1580183.7588314821,
    5175496.570507053
   ]
  },
  "max_20m": {
   "gradient_pct": 17.020706515096435,
   "start_distance_m": 1052.0,
   "end_distance_m": 1072.0,
   "midpoint_distance_m": 1062.0,
   "start_elevation_m": 116.31827980374531,
   "end_elevation_m": 119.7224211067646,
   "start_xy": [
    1580191.5922634823,
    5175511.632246976
   ],
   "end_xy": [
    1580182.5015057381,
    5175493.846698695
   ]
  },
  "max_25m": {
   "gradient_pct": 16.89242070625363,
   "start_distance_m": 1047.0,
   "end_distance_m": 1072.0,
   "midpoint_distance_m": 1059.5,
   "start_elevation_m": 115.49931593020119,
   "end_elevation_m": 119.7224211067646,
   "start_xy": [
    1580194.5029975649,
    5175515.6853488935
   ],
   "end_xy": [
    1580182.5015057381,
    5175493.846698695
   ]
  },
  "max_50m": {
   "gradient_pct": 16.64492827353027,
   "start_distance_m": 1045.0,
   "end_distance_m": 1095.0,
   "midpoint_distance_m": 1070.0,
   "start_elevation_m": 115.16569864878512,
   "end_elevation_m": 123.48816278555026,
   "start_xy": [
    1580195.782140809,
    5175517.222811921
   ],
   "end_xy": [
    1580171.822148294,
    5175473.48790914
   ]
  },
  "max_100m": {
   "gradient_pct": 16.353187400117235,
   "start_distance_m": 1777.0,
   "end_distance_m": 1877.0,
   "midpoint_distance_m": 1827.0,
   "start_elevation_m": 182.70949656956287,
   "end_elevation_m": 199.0626839696801,
   "start_xy": [
    1579723.57728836,
    5175243.735543763
   ],
   "end_xy": [
    1579729.0660594634,
    5175143.97825298
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.3480429418743824,
   "start_distance_m": 1566.0,
   "end_distance_m": 1571.0,
   "midpoint_distance_m": 1568.5,
   "start_elevation_m": 162.2820677601744,
   "end_elevation_m": 162.0146656130807,
   "start_xy": [
    1579876.176434579,
    5175324.480665069
   ],
   "end_xy": [
    1579871.391396615,
    5175323.03035073
   ]
  },
  "min_10m": {
   "gradient_pct": -5.112259507565398,
   "start_distance_m": 1566.0,
   "end_distance_m": 1576.0,
   "midpoint_distance_m": 1571.0,
   "start_elevation_m": 162.2820677601744,
   "end_elevation_m": 161.77084180941787,
   "start_xy": [
    1579876.176434579,
    5175324.480665069
   ],
   "end_xy": [
    1579866.606358651,
    5175321.580036391
   ]
  },
  "min_20m": {
   "gradient_pct": -4.930683736369161,
   "start_distance_m": 1561.0,
   "end_distance_m": 1581.0,
   "midpoint_distance_m": 1571.0,
   "start_elevation_m": 162.5095820722683,
   "end_elevation_m": 161.52344532499447,
   "start_xy": [
    1579880.9614725432,
    5175325.930979408
   ],
   "end_xy": [
    1579861.821320687,
    5175320.129722051
   ]
  },
  "min_25m": {
   "gradient_pct": -4.8519478413356865,
   "start_distance_m": 1557.0,
   "end_distance_m": 1582.0,
   "midpoint_distance_m": 1569.5,
   "start_elevation_m": 162.6944102746931,
   "end_elevation_m": 161.48142331435918,
   "start_xy": [
    1579884.8317737863,
    5175326.935768626
   ],
   "end_xy": [
    1579860.8643130942,
    5175319.839659183
   ]
  },
  "min_50m": {
   "gradient_pct": -4.1995667764667814,
   "start_distance_m": 1549.0,
   "end_distance_m": 1599.0,
   "midpoint_distance_m": 1574.0,
   "start_elevation_m": 162.92608005213728,
   "end_elevation_m": 160.8262966639039,
   "start_xy": [
    1579892.60874916,
    5175328.811576194
   ],
   "end_xy": [
    1579844.4689280544,
    5175315.348968025
   ]
  },
  "min_100m": {
   "gradient_pct": 0.9248617229655167,
   "start_distance_m": 1374.0,
   "end_distance_m": 1474.0,
   "midpoint_distance_m": 1424.0,
   "start_elevation_m": 154.98529353442208,
   "end_elevation_m": 155.9101552573876,
   "start_xy": [
    1580058.23184991,
    5175319.354198743
   ],
   "end_xy": [
    1579966.2373099509,
    5175342.871176163
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 17.969601330486995,
   "start_distance_m": 719.0,
   "end_distance_m": 721.0,
   "midpoint_distance_m": 720.0,
   "start_elevation_m": 66.01557131997443,
   "end_elevation_m": 66.37496334658417,
   "start_xy": [
    1580384.2770813948,
    5175781.558972863
   ],
   "end_xy": [
    1580383.169410199,
    5175779.89394287
   ]
  },
  "max_3m": {
   "gradient_pct": 17.979636547934774,
   "start_distance_m": 1060.0,
   "end_distance_m": 1063.0,
   "midpoint_distance_m": 1061.5,
   "start_elevation_m": 117.65808434236874,
   "end_elevation_m": 118.19747343880678,
   "start_xy": [
    1580187.6468901215,
    5175504.686675753
   ],
   "end_xy": [
    1580186.3255597276,
    5175501.993334708
   ]
  }
 },
 "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": 0.035,
   "obstruction_max_height_m": 16.47,
   "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-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/BX24.tiff"
  ],
  "calculated_at": "2026-09-28T05:26:17+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": [
   "BX24"
  ],
  "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": 82,
   "stations_resolved": 82,
   "width_median_m": 7.38,
   "width_p10_m": 5.25,
   "width_min_m": 4.25,
   "width_max_m": 12.0,
   "bounded_share": 0.28,
   "unbounded_share": 0.72,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.5,
   "window_m": [
    1047.0,
    1072.0
   ],
   "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": 82,
    "stations_resolved": 82,
    "width_median_m": 7.75,
    "width_p10_m": 3.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.646,
    "unbounded_share": 0.354,
    "confidence_median": 1.0,
    "width_median_bounded_m": 7.25,
    "window_m": [
     1047.0,
     1072.0
    ],
    "width_at_max25_m": 8.25,
    "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": "Linwood-Central-Heathcote Community",
  "county": "Canterbury",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}