{
 "ocl_version": "0.1.0",
 "name": "Maning Street",
 "slug": "maning-street",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.714933026358864,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 219.0,
   "end_distance_m": 221.0,
   "start_elevation_m": 41.11358417373378,
   "end_elevation_m": 41.827882834260954,
   "min_gradient_pct": -0.37645619003712216
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.836893419445488,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 218.0,
   "end_distance_m": 221.0,
   "start_elevation_m": 40.90277603167759,
   "end_elevation_m": 41.827882834260954,
   "min_gradient_pct": -0.17760719836455627
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.982650105265623,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 169.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 29.13351193985475,
   "end_elevation_m": 30.48264444511803,
   "min_gradient_pct": 0.67017196697984
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.401736488569583,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 169.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 29.13351193985475,
   "end_elevation_m": 31.773685588711707,
   "min_gradient_pct": 3.1448082098927443
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.672298836119403,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 167.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 28.667605778568223,
   "end_elevation_m": 33.802065545792104,
   "min_gradient_pct": 5.2164452733467215
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.16175507077969,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 162.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 27.51162677809718,
   "end_elevation_m": 33.802065545792104,
   "min_gradient_pct": 5.88845934608824
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.380206168881045,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 166.0,
   "end_distance_m": 216.0,
   "start_elevation_m": 28.415894901568443,
   "end_elevation_m": 40.605997986008965,
   "min_gradient_pct": 12.306276041922052
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.5431625057908,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 123.0,
   "end_distance_m": 223.0,
   "start_elevation_m": 21.56323628711551,
   "end_elevation_m": 42.10639879290631,
   "min_gradient_pct": 14.134053388814142
  }
 ],
 "shape": {
  "ascent_concentration": 0.378,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 144.0,
  "shape_class": "sustained"
 },
 "length_m": 255.68725327408242,
 "start_elevation_m": 3.85038978549345,
 "end_elevation_m": 44.771258110045835,
 "endpoint_gain_m": 40.92086832455239,
 "overall_gradient_pct": 16.0042660713663,
 "accumulated_ascent_m": 40.928942378090625,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.982650105265623,
   "start_distance_m": 169.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 171.5,
   "start_elevation_m": 29.13351193985475,
   "end_elevation_m": 30.48264444511803,
   "start_xy": [
    1649280.3140485245,
    6086697.674269986
   ],
   "end_xy": [
    1649275.6857282117,
    6086699.484845243
   ]
  },
  "max_10m": {
   "gradient_pct": 26.401736488569583,
   "start_distance_m": 169.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 174.0,
   "start_elevation_m": 29.13351193985475,
   "end_elevation_m": 31.773685588711707,
   "start_xy": [
    1649280.3140485245,
    6086697.674269986
   ],
   "end_xy": [
    1649271.174579679,
    6086701.6411241945
   ]
  },
  "max_20m": {
   "gradient_pct": 25.672298836119403,
   "start_distance_m": 167.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 177.0,
   "start_elevation_m": 28.667605778568223,
   "end_elevation_m": 33.802065545792104,
   "start_xy": [
    1649282.2710696445,
    6086697.261876564
   ],
   "end_xy": [
    1649264.301796802,
    6086705.688369407
   ]
  },
  "max_25m": {
   "gradient_pct": 25.16175507077969,
   "start_distance_m": 162.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 174.5,
   "start_elevation_m": 27.51162677809718,
   "end_elevation_m": 33.802065545792104,
   "start_xy": [
    1649287.1636224447,
    6086696.230893005
   ],
   "end_xy": [
    1649264.301796802,
    6086705.688369407
   ]
  },
  "max_50m": {
   "gradient_pct": 24.380206168881045,
   "start_distance_m": 166.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 191.0,
   "start_elevation_m": 28.415894901568443,
   "end_elevation_m": 40.605997986008965,
   "start_xy": [
    1649283.2495802045,
    6086697.055679851
   ],
   "end_xy": [
    1649239.8528697088,
    6086720.553979958
   ]
  },
  "max_100m": {
   "gradient_pct": 20.5431625057908,
   "start_distance_m": 123.0,
   "end_distance_m": 223.0,
   "midpoint_distance_m": 173.0,
   "start_elevation_m": 21.56323628711551,
   "end_elevation_m": 42.10639879290631,
   "start_xy": [
    1649322.0830750787,
    6086697.34157442
   ],
   "end_xy": [
    1649232.9341367558,
    6086721.468252832
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.67017196697984,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 3.85038978549345,
   "end_elevation_m": 3.883898383842442,
   "start_xy": [
    1649441.675,
    6086668.616
   ],
   "end_xy": [
    1649436.850161502,
    6086669.927843538
   ]
  },
  "min_10m": {
   "gradient_pct": 3.1448082098927443,
   "start_distance_m": 245.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 250.0,
   "start_elevation_m": 44.44716179358717,
   "end_elevation_m": 44.761642614576445,
   "start_xy": [
    1649211.0440685835,
    6086723.66482184
   ],
   "end_xy": [
    1649201.1711227454,
    6086722.74218724
   ]
  },
  "min_20m": {
   "gradient_pct": 5.2164452733467215,
   "start_distance_m": 235.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 245.0,
   "start_elevation_m": 43.7183535599071,
   "end_elevation_m": 44.761642614576445,
   "start_xy": [
    1649220.994099571,
    6086722.666381381
   ],
   "end_xy": [
    1649201.1711227454,
    6086722.74218724
   ]
  },
  "min_25m": {
   "gradient_pct": 5.88845934608824,
   "start_distance_m": 230.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 242.5,
   "start_elevation_m": 43.289527778054385,
   "end_elevation_m": 44.761642614576445,
   "start_xy": [
    1649225.9691150647,
    6086722.167161153
   ],
   "end_xy": [
    1649201.1711227454,
    6086722.74218724
   ]
  },
  "min_50m": {
   "gradient_pct": 12.306276041922052,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 3.85038978549345,
   "end_elevation_m": 10.003527806454475,
   "start_xy": [
    1649441.675,
    6086668.616
   ],
   "end_xy": [
    1649393.0770792267,
    6086680.345946305
   ]
  },
  "min_100m": {
   "gradient_pct": 14.134053388814142,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 3.85038978549345,
   "end_elevation_m": 17.98444317430759,
   "start_xy": [
    1649441.675,
    6086668.616
   ],
   "end_xy": [
    1649344.4510489884,
    6086691.986787479
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.714933026358864,
   "start_distance_m": 219.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 220.0,
   "start_elevation_m": 41.11358417373378,
   "end_elevation_m": 41.827882834260954,
   "start_xy": [
    1649236.9141491507,
    6086721.068876648
   ],
   "end_xy": [
    1649234.9241429532,
    6086721.26856474
   ]
  },
  "max_3m": {
   "gradient_pct": 30.836893419445488,
   "start_distance_m": 218.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 219.5,
   "start_elevation_m": 40.90277603167759,
   "end_elevation_m": 41.827882834260954,
   "start_xy": [
    1649237.9091522496,
    6086720.969032602
   ],
   "end_xy": [
    1649234.9241429532,
    6086721.26856474
   ]
  }
 },
 "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": 0.222,
   "obstruction_max_height_m": 18.12,
   "flagged_windows_m": [
    2,
    3,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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-n1",
   "road_pbf": "block-batch-nz-n1.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:ff0dec6edae18a40"
  },
  "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/AW27.tiff"
  ],
  "calculated_at": "2026-09-28T04:58:19+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n1",
  "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": [
   "AW27"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 17,
   "stations_resolved": 17,
   "width_median_m": 6.25,
   "width_p10_m": 4.4,
   "width_min_m": 3.25,
   "width_max_m": 12.0,
   "bounded_share": 0.059,
   "unbounded_share": 0.941,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.75,
   "window_m": [
    162.0,
    187.0
   ],
   "width_at_max25_m": 4.75,
   "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": 17,
    "stations_resolved": 17,
    "width_median_m": 2.75,
    "width_p10_m": 1.0,
    "width_min_m": 0.75,
    "width_max_m": 12.0,
    "bounded_share": 0.824,
    "unbounded_share": 0.176,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.38,
    "window_m": [
     162.0,
     187.0
    ],
    "width_at_max25_m": 2.5,
    "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": "Kaikohe-Hokianga Community",
  "county": "Northland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}