{
 "ocl_version": "0.1.0",
 "name": "Kvamsdalsvegen",
 "slug": "kvamsdalsvegen-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.585069214993354,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 651.0,
   "end_distance_m": 653.0,
   "start_elevation_m": 106.68853933976791,
   "end_elevation_m": 107.28024072406778,
   "min_gradient_pct": -17.23257857645848
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.133774732386826,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 650.0,
   "end_distance_m": 653.0,
   "start_elevation_m": 106.55622748209618,
   "end_elevation_m": 107.28024072406778,
   "min_gradient_pct": -11.430979840680303
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.893157643220093,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 779.0,
   "end_distance_m": 784.0,
   "start_elevation_m": 123.93947079391054,
   "end_elevation_m": 124.98412867607155,
   "min_gradient_pct": -3.9195341766759384
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.159770190585533,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 776.0,
   "end_distance_m": 786.0,
   "start_elevation_m": 123.34271491325165,
   "end_elevation_m": 125.35869193231021,
   "min_gradient_pct": 1.5452709913574836
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.916052154865568,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 769.0,
   "end_distance_m": 789.0,
   "start_elevation_m": 122.09891042064108,
   "end_elevation_m": 125.88212085161419,
   "min_gradient_pct": 2.8802627794149593
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.537114457158964,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 768.0,
   "end_distance_m": 793.0,
   "start_elevation_m": 121.91914336904694,
   "end_elevation_m": 126.55342198333668,
   "min_gradient_pct": 3.812275846742267
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.949579762803893,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 396.0,
   "end_distance_m": 446.0,
   "start_elevation_m": 70.72283308323208,
   "end_elevation_m": 79.69762296463402,
   "min_gradient_pct": 5.962455552807044
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.725822494721022,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 350.0,
   "end_distance_m": 450.0,
   "start_elevation_m": 62.65528750560414,
   "end_elevation_m": 80.38111000032517,
   "min_gradient_pct": 6.203748746301436
  }
 ],
 "shape": {
  "ascent_concentration": 0.288,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 393.0,
  "shape_class": "sustained"
 },
 "length_m": 1568.2466512065917,
 "start_elevation_m": 26.978031180716886,
 "end_elevation_m": 229.42084757508874,
 "endpoint_gain_m": 202.44281639437185,
 "overall_gradient_pct": 12.908863298934168,
 "accumulated_ascent_m": 202.81462951877245,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.893157643220093,
   "start_distance_m": 779.0,
   "end_distance_m": 784.0,
   "midpoint_distance_m": 781.5,
   "start_elevation_m": 123.93947079391054,
   "end_elevation_m": 124.98412867607155,
   "start_xy": [
    65911.3428600796,
    6727094.18658502
   ],
   "end_xy": [
    65907.36200869325,
    6727097.212479826
   ]
  },
  "max_10m": {
   "gradient_pct": 20.159770190585533,
   "start_distance_m": 776.0,
   "end_distance_m": 786.0,
   "midpoint_distance_m": 781.0,
   "start_elevation_m": 123.34271491325165,
   "end_elevation_m": 125.35869193231021,
   "start_xy": [
    65913.54820010402,
    6727092.144311005
   ],
   "end_xy": [
    65905.56577914677,
    6727098.069972822
   ]
  },
  "max_20m": {
   "gradient_pct": 18.916052154865568,
   "start_distance_m": 769.0,
   "end_distance_m": 789.0,
   "midpoint_distance_m": 779.0,
   "start_elevation_m": 122.09891042064108,
   "end_elevation_m": 125.88212085161419,
   "start_xy": [
    65918.69399349432,
    6727087.379004971
   ],
   "end_xy": [
    65902.75807994572,
    6727099.142929003
   ]
  },
  "max_25m": {
   "gradient_pct": 18.537114457158964,
   "start_distance_m": 768.0,
   "end_distance_m": 793.0,
   "midpoint_distance_m": 780.5,
   "start_elevation_m": 121.91914336904694,
   "end_elevation_m": 126.55342198333668,
   "start_xy": [
    65919.4291068358,
    6727086.698246966
   ],
   "end_xy": [
    65898.77102235048,
    6727099.055594784
   ]
  },
  "max_50m": {
   "gradient_pct": 17.949579762803893,
   "start_distance_m": 396.0,
   "end_distance_m": 446.0,
   "midpoint_distance_m": 421.0,
   "start_elevation_m": 70.72283308323208,
   "end_elevation_m": 79.69762296463402,
   "start_xy": [
    66177.13415385384,
    6727026.510812834
   ],
   "end_xy": [
    66194.47106703471,
    6726979.732577482
   ]
  },
  "max_100m": {
   "gradient_pct": 17.725822494721022,
   "start_distance_m": 350.0,
   "end_distance_m": 450.0,
   "midpoint_distance_m": 400.0,
   "start_elevation_m": 62.65528750560414,
   "end_elevation_m": 80.38111000032517,
   "start_xy": [
    66162.04390957665,
    6727069.815106851
   ],
   "end_xy": [
    66194.49374724778,
    6726975.731092843
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.9195341766759384,
   "start_distance_m": 645.0,
   "end_distance_m": 650.0,
   "midpoint_distance_m": 647.5,
   "start_elevation_m": 106.75220419092997,
   "end_elevation_m": 106.55622748209618,
   "start_xy": [
    66026.20307780663,
    6727025.924108575
   ],
   "end_xy": [
    66021.61848884435,
    6727027.943283231
   ]
  },
  "min_10m": {
   "gradient_pct": 1.5452709913574836,
   "start_distance_m": 6.0,
   "end_distance_m": 16.0,
   "midpoint_distance_m": 11.0,
   "start_elevation_m": 27.282638299561718,
   "end_elevation_m": 27.437165398697466,
   "start_xy": [
    66080.14468760538,
    6727204.940992532
   ],
   "end_xy": [
    66075.61900088638,
    6727196.003641567
   ]
  },
  "min_20m": {
   "gradient_pct": 2.8802627794149593,
   "start_distance_m": 1.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 11.0,
   "start_elevation_m": 27.056279594967773,
   "end_elevation_m": 27.632332150850765,
   "start_xy": [
    66082.50244793424,
    6727209.360998755
   ],
   "end_xy": [
    66075.71121733543,
    6727191.251589623
   ]
  },
  "min_25m": {
   "gradient_pct": 3.812275846742267,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 26.978031180716886,
   "end_elevation_m": 27.931100142402453,
   "start_xy": [
    66082.974,
    6727210.245
   ],
   "end_xy": [
    66077.61931423633,
    6727187.811546796
   ]
  },
  "min_50m": {
   "gradient_pct": 5.962455552807044,
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 39.41879273536599,
   "end_elevation_m": 42.40002051176951,
   "start_xy": [
    66162.09146095681,
    6727140.376396325
   ],
   "end_xy": [
    66186.5286216366,
    6727096.867097309
   ]
  },
  "min_100m": {
   "gradient_pct": 6.203748746301436,
   "start_distance_m": 123.0,
   "end_distance_m": 223.0,
   "midpoint_distance_m": 173.0,
   "start_elevation_m": 39.223345781656626,
   "end_elevation_m": 45.42709452795806,
   "start_xy": [
    66160.47962481184,
    6727142.913391498
   ],
   "end_xy": [
    66201.89982725763,
    6727064.559943144
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.585069214993354,
   "start_distance_m": 651.0,
   "end_distance_m": 653.0,
   "midpoint_distance_m": 652.0,
   "start_elevation_m": 106.68853933976791,
   "end_elevation_m": 107.28024072406778,
   "start_xy": [
    66020.7015710519,
    6727028.347118162
   ],
   "end_xy": [
    66018.86773546699,
    6727029.154788024
   ]
  },
  "max_3m": {
   "gradient_pct": 24.133774732386826,
   "start_distance_m": 650.0,
   "end_distance_m": 653.0,
   "midpoint_distance_m": 651.5,
   "start_elevation_m": 106.55622748209618,
   "end_elevation_m": 107.28024072406778,
   "start_xy": [
    66021.61848884435,
    6727027.943283231
   ],
   "end_xy": [
    66018.86773546699,
    6727029.154788024
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.038,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.081,
   "obstruction_max_height_m": 14.91,
   "flagged_windows_m": [
    2,
    3,
    10,
    20,
    25
   ]
  },
  "excluded_ranges_m": [
   [
    1243.0,
    1283.0
   ],
   [
    1551.0,
    1568.0
   ]
  ],
  "review": [],
  "extent": [
   "may_continue_beyond_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-b03",
   "road_pbf": "no-b03-block-batch-no-b03.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_E65500-N6726500_1m.tif",
   "data/cache/no/nhm-no_dtm_E65500-N6727000_1m.tif",
   "data/cache/no/nhm-no_dtm_E66000-N6726500_1m.tif",
   "data/cache/no/nhm-no_dtm_E66000-N6727000_1m.tif"
  ],
  "calculated_at": "2026-10-03T22:39:58+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/no-b03-block-batch-no-b03.osm.pbf",
  "osm_snapshot": "",
  "run_id": "no-b03",
  "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": [
   "E65500-N6726500",
   "E65500-N6727000",
   "E66000-N6726500",
   "E66000-N6727000"
  ],
  "elevation_blocks": [
   "nhm-dtm-1m"
  ],
  "nhm_laser_projects": [
   {
    "last_flight_date": "2025-08-17",
    "name": "Eidfjord 10pkt 2025",
    "points_per_m2": 10,
    "resolution_m": 0.25,
    "season": "",
    "year": 2025
   },
   {
    "last_flight_date": "2015-10-17",
    "name": "Eidfjord_Ulvik_Granvin 2014",
    "points_per_m2": 2,
    "resolution_m": 0.5,
    "season": "",
    "year": 2014
   },
   {
    "last_flight_date": "2009-01-01",
    "name": "Hordaland indre 2009",
    "points_per_m2": 2,
    "resolution_m": 0.5,
    "season": "season-unknown",
    "year": 2009
   }
  ],
  "nhm_last_flight_date": "2025-08-17",
  "nhm_flight_season_unknown": [
   "Hordaland indre 2009"
  ],
  "nhm_retrieved_at": "2026-10-03T11:02:10Z",
  "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": 1,
  "tunnel_check": "osm tunnel=* ways on 1 own way(s)",
  "tunnel_ranges_m": [],
  "underground_fraction": 0.0,
  "structure_mask_ranges_m": [
   [
    1248.9,
    1278.9
   ],
   [
    1556.2,
    1586.2
   ],
   [
    1556.2,
    1586.2
   ]
  ],
  "carriageway": {
   "stations": 69,
   "stations_resolved": 69,
   "width_median_m": 4.0,
   "width_p10_m": 2.75,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.261,
   "unbounded_share": 0.739,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.25,
   "window_m": [
    768.0,
    793.0
   ],
   "width_at_max25_m": 3.0,
   "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": 69,
    "stations_resolved": 69,
    "width_median_m": 6.0,
    "width_p10_m": 1.75,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.725,
    "unbounded_share": 0.275,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.88,
    "window_m": [
     768.0,
     793.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Eidfjord",
  "county": "Vestland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}