{
 "ocl_version": "0.1.0",
 "name": "Langvei",
 "slug": "langvei",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 17.923747388093147,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1827.0,
   "end_distance_m": 1829.0,
   "start_elevation_m": 297.36629566653824,
   "end_elevation_m": 297.7247706143001,
   "min_gradient_pct": -12.761275013622253
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 17.6107360030187,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1826.0,
   "end_distance_m": 1829.0,
   "start_elevation_m": 297.19644853420954,
   "end_elevation_m": 297.7247706143001,
   "min_gradient_pct": -12.214105813107304
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.10733346032839,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1825.0,
   "end_distance_m": 1830.0,
   "start_elevation_m": 297.02621739049755,
   "end_elevation_m": 297.88158406351397,
   "min_gradient_pct": -10.331967487571774
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 16.89568182885921,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1825.0,
   "end_distance_m": 1835.0,
   "start_elevation_m": 297.02621739049755,
   "end_elevation_m": 298.71578557338347,
   "min_gradient_pct": -8.006664390371157
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 15.468196074064906,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1821.0,
   "end_distance_m": 1841.0,
   "start_elevation_m": 296.4934061565227,
   "end_elevation_m": 299.5870453713357,
   "min_gradient_pct": -5.947464482442513
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 15.187326530640348,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 469.0,
   "end_distance_m": 494.0,
   "start_elevation_m": 147.65152575464725,
   "end_elevation_m": 151.44835738730734,
   "min_gradient_pct": -5.039113237942274
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.986640150954997,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 708.0,
   "end_distance_m": 758.0,
   "start_elevation_m": 167.9349276352881,
   "end_elevation_m": 175.4282477107656,
   "min_gradient_pct": -0.324080328163177
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.455356250887776,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 705.0,
   "end_distance_m": 805.0,
   "start_elevation_m": 167.50500061579683,
   "end_elevation_m": 181.9603568666846,
   "min_gradient_pct": 4.0914372610902205
  }
 ],
 "shape": {
  "ascent_concentration": 0.294,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 698.0,
  "shape_class": "sustained"
 },
 "length_m": 1917.226972129182,
 "start_elevation_m": 88.64793403363859,
 "end_elevation_m": 300.28745315769527,
 "endpoint_gain_m": 211.63951912405668,
 "overall_gradient_pct": 11.038834848490566,
 "accumulated_ascent_m": 213.088556531772,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.10733346032839,
   "start_distance_m": 1825.0,
   "end_distance_m": 1830.0,
   "midpoint_distance_m": 1827.5,
   "start_elevation_m": 297.02621739049755,
   "end_elevation_m": 297.88158406351397,
   "start_xy": [
    153714.63181991279,
    6542699.662846576
   ],
   "end_xy": [
    153711.08510888467,
    6542703.194755167
   ]
  },
  "max_10m": {
   "gradient_pct": 16.89568182885921,
   "start_distance_m": 1825.0,
   "end_distance_m": 1835.0,
   "midpoint_distance_m": 1830.0,
   "start_elevation_m": 297.02621739049755,
   "end_elevation_m": 298.71578557338347,
   "start_xy": [
    153714.63181991279,
    6542699.662846576
   ],
   "end_xy": [
    153707.53839785655,
    6542706.726663758
   ]
  },
  "max_20m": {
   "gradient_pct": 15.468196074064906,
   "start_distance_m": 1821.0,
   "end_distance_m": 1841.0,
   "midpoint_distance_m": 1831.0,
   "start_elevation_m": 296.4934061565227,
   "end_elevation_m": 299.5870453713357,
   "start_xy": [
    153717.46918873527,
    6542696.837319704
   ],
   "end_xy": [
    153703.4906401461,
    6542711.149863644
   ]
  },
  "max_25m": {
   "gradient_pct": 15.187326530640348,
   "start_distance_m": 469.0,
   "end_distance_m": 494.0,
   "midpoint_distance_m": 481.5,
   "start_elevation_m": 147.65152575464725,
   "end_elevation_m": 151.44835738730734,
   "start_xy": [
    154825.92043934268,
    6542659.548888633
   ],
   "end_xy": [
    154807.2262013269,
    6542643.379903722
   ]
  },
  "max_50m": {
   "gradient_pct": 14.986640150954997,
   "start_distance_m": 708.0,
   "end_distance_m": 758.0,
   "midpoint_distance_m": 733.0,
   "start_elevation_m": 167.9349276352881,
   "end_elevation_m": 175.4282477107656,
   "start_xy": [
    154631.94221701327,
    6542559.994236069
   ],
   "end_xy": [
    154582.81029434226,
    6542569.443340682
   ]
  },
  "max_100m": {
   "gradient_pct": 14.455356250887776,
   "start_distance_m": 705.0,
   "end_distance_m": 805.0,
   "midpoint_distance_m": 755.0,
   "start_elevation_m": 167.50500061579683,
   "end_elevation_m": 181.9603568666846,
   "start_xy": [
    154634.8780989216,
    6542559.361994548
   ],
   "end_xy": [
    154536.0479857178,
    6542574.464264951
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.331967487571774,
   "start_distance_m": 1894.0,
   "end_distance_m": 1899.0,
   "midpoint_distance_m": 1896.5,
   "start_elevation_m": 301.5469570416567,
   "end_elevation_m": 301.0303586672781,
   "start_xy": [
    153687.45766384786,
    6542761.181817285
   ],
   "end_xy": [
    153685.6641059637,
    6542765.854792558
   ]
  },
  "min_10m": {
   "gradient_pct": -8.006664390371157,
   "start_distance_m": 1893.0,
   "end_distance_m": 1903.0,
   "midpoint_distance_m": 1898.0,
   "start_elevation_m": 301.59564071994225,
   "end_elevation_m": 300.79497428090514,
   "start_xy": [
    153687.81637542468,
    6542760.24722223
   ],
   "end_xy": [
    153684.22925965633,
    6542769.5931727765
   ]
  },
  "min_20m": {
   "gradient_pct": -5.947464482442513,
   "start_distance_m": 1893.0,
   "end_distance_m": 1913.0,
   "midpoint_distance_m": 1903.0,
   "start_elevation_m": 301.59564071994225,
   "end_elevation_m": 300.40614782345375,
   "start_xy": [
    153687.81637542468,
    6542760.24722223
   ],
   "end_xy": [
    153682.05517933462,
    6542779.355313726
   ]
  },
  "min_25m": {
   "gradient_pct": -5.039113237942274,
   "start_distance_m": 1892.0,
   "end_distance_m": 1917.0,
   "midpoint_distance_m": 1904.5,
   "start_elevation_m": 301.554248268448,
   "end_elevation_m": 300.29446995896245,
   "start_xy": [
    153688.17508700152,
    6542759.312627175
   ],
   "end_xy": [
    153681.23456419157,
    6542783.274607393
   ]
  },
  "min_50m": {
   "gradient_pct": -0.324080328163177,
   "start_distance_m": 1867.0,
   "end_distance_m": 1917.0,
   "midpoint_distance_m": 1892.0,
   "start_elevation_m": 300.45651012304404,
   "end_elevation_m": 300.29446995896245,
   "start_xy": [
    153697.70020839642,
    6542736.21762624
   ],
   "end_xy": [
    153681.23456419157,
    6542783.274607393
   ]
  },
  "min_100m": {
   "gradient_pct": 4.0914372610902205,
   "start_distance_m": 552.0,
   "end_distance_m": 652.0,
   "midpoint_distance_m": 602.0,
   "start_elevation_m": 157.67435088743048,
   "end_elevation_m": 161.7657881485207,
   "start_xy": [
    154769.61528545976,
    6542599.149853853
   ],
   "end_xy": [
    154687.1129971838,
    6542550.864809494
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 17.923747388093147,
   "start_distance_m": 1827.0,
   "end_distance_m": 1829.0,
   "midpoint_distance_m": 1828.0,
   "start_elevation_m": 297.36629566653824,
   "end_elevation_m": 297.7247706143001,
   "start_xy": [
    153713.21313550154,
    6542701.075610013
   ],
   "end_xy": [
    153711.79445109027,
    6542702.488373449
   ]
  },
  "max_3m": {
   "gradient_pct": 17.6107360030187,
   "start_distance_m": 1826.0,
   "end_distance_m": 1829.0,
   "midpoint_distance_m": 1827.5,
   "start_elevation_m": 297.19644853420954,
   "end_elevation_m": 297.7247706143001,
   "start_xy": [
    153713.92247770715,
    6542700.369228294
   ],
   "end_xy": [
    153711.79445109027,
    6542702.488373449
   ]
  }
 },
 "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": 0.096,
   "obstruction_max_height_m": 16.67,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "descends_at_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "368c60c29e47d4b421849c953b172a04f7694146",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.2",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.2",
   "proj": "9.8.1",
   "run_id": "no-b04",
   "road_pbf": "no-b04-block-batch-no-b04.osm.pbf",
   "region_key": "norway",
   "crs": "EPSG:25833",
   "elevation_provider_key": "nhm-no",
   "tile_index": "nhm-window",
   "authority": "nvdb",
   "registry_pbf": "norway-2026-10-01.osm.pbf"
  },
  "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
  ],
  "scale_correction": "point",
  "scale_correction_crs": "EPSG:25833",
  "elevation_crs": "EPSG:25833",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/no/nhm-no_dtm_E153500-N6542500_1m.tif",
   "data/cache/no/nhm-no_dtm_E154000-N6542500_1m.tif",
   "data/cache/no/nhm-no_dtm_E154500-N6542500_1m.tif",
   "data/cache/no/nhm-no_dtm_E155000-N6542500_1m.tif"
  ],
  "calculated_at": "2026-10-04T04:40:09+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/no-b04-block-batch-no-b04.osm.pbf",
  "osm_snapshot": "",
  "run_id": "no-b04",
  "elevation_provider": "Kartverket NHM DTM 1 m (laser-covered ground only)",
  "elevation_licence": "CC BY 4.0 \u2014 \u00a9 Kartverket (https://www.kartverket.no/api-og-data/vilkar-for-bruk)",
  "elevation_dataset": "Nasjonal h\u00f8ydemodell (NHM) DTM, 1 m, EPSG:25833, NN2000 (Kartverket), served by the hoydedata.no ImageServer; ground without a laser project is a coarser resampled product and is never measured",
  "elevation_vertical_datum": "NN2000",
  "elevation_tile_ids": [
   "E153500-N6542500",
   "E154000-N6542500",
   "E154500-N6542500",
   "E155000-N6542500"
  ],
  "elevation_blocks": [
   "nhm-dtm-1m"
  ],
  "nhm_laser_projects": [
   {
    "last_flight_date": "2009-01-01",
    "name": "Gjerstad 2pkt 2009",
    "points_per_m2": 2.3000000000000003,
    "resolution_m": 0.5,
    "season": "season-unknown",
    "year": 2009
   },
   {
    "last_flight_date": "2016-05-16",
    "name": "NDH Krager\u00f8-Gjerstad 5pkt 2016",
    "points_per_m2": 5,
    "resolution_m": 0.25,
    "season": "",
    "year": 2016
   }
  ],
  "nhm_last_flight_date": "2016-05-16",
  "nhm_flight_season_unknown": [
   "Gjerstad 2pkt 2009"
  ],
  "nhm_retrieved_at": "2026-10-03T10:28:01Z",
  "nhm_note": "laser projects overlapping the route's cells; the mosaic draws on them by its own priority and which project supplied which pixel is not recorded",
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 2,
  "tunnel_check": "osm tunnel=* ways on 2 own way(s)",
  "tunnel_ranges_m": [],
  "underground_fraction": 0.0,
  "carriageway": {
   "stations": 83,
   "stations_resolved": 83,
   "width_median_m": 5.75,
   "width_p10_m": 4.5,
   "width_min_m": 3.5,
   "width_max_m": 12.0,
   "bounded_share": 0.241,
   "unbounded_share": 0.759,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.25,
   "window_m": [
    469.0,
    494.0
   ],
   "width_at_max25_m": 6.75,
   "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": 83,
    "stations_resolved": 83,
    "width_median_m": 6.75,
    "width_p10_m": 1.25,
    "width_min_m": 0.75,
    "width_max_m": 12.0,
    "bounded_share": 0.771,
    "unbounded_share": 0.229,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.62,
    "window_m": [
     469.0,
     494.0
    ],
    "width_at_max25_m": 6.0,
    "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": "Gjerstad",
  "county": "Agder",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}