{
 "ocl_version": "0.1.0",
 "name": "Liagrendvegen",
 "slug": "liagrendvegen",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.371413753691726,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 133.0,
   "start_elevation_m": 52.775892166677394,
   "end_elevation_m": 53.46332044175123,
   "min_gradient_pct": 0.6114133235719521
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.07471835756598,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 127.0,
   "end_distance_m": 130.0,
   "start_elevation_m": 51.5520929084939,
   "end_elevation_m": 52.514334459220876,
   "min_gradient_pct": 0.8229441549119088
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.540312463159665,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 128.0,
   "end_distance_m": 133.0,
   "start_elevation_m": 51.886304818593246,
   "end_elevation_m": 53.46332044175123,
   "min_gradient_pct": 1.644121850650322
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.217943344669322,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 126.0,
   "end_distance_m": 136.0,
   "start_elevation_m": 51.283727608111434,
   "end_elevation_m": 54.305521942578366,
   "min_gradient_pct": 2.3851789146004876
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 29.204256758900726,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 126.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 51.283727608111434,
   "end_elevation_m": 57.12457895989158,
   "min_gradient_pct": 3.9141986401170215
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 28.520475122109474,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 117.0,
   "end_distance_m": 142.0,
   "start_elevation_m": 48.95601530358351,
   "end_elevation_m": 56.08613408411088,
   "min_gradient_pct": 5.581563404769923
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 27.159722284999415,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 112.0,
   "end_distance_m": 162.0,
   "start_elevation_m": 47.48936459310292,
   "end_elevation_m": 61.06922573560263,
   "min_gradient_pct": 10.183409561119262
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 23.59515580163428,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 73.0,
   "end_distance_m": 173.0,
   "start_elevation_m": 39.7850373028465,
   "end_elevation_m": 63.38019310448078,
   "min_gradient_pct": 13.10118312363651
  }
 ],
 "shape": {
  "ascent_concentration": 0.387,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 143.0,
  "shape_class": "sustained"
 },
 "length_m": 202.49794543642332,
 "start_elevation_m": 32.187966081695,
 "end_elevation_m": 67.89903041505978,
 "endpoint_gain_m": 35.71106433336478,
 "overall_gradient_pct": 17.63527242530799,
 "accumulated_ascent_m": 35.71106433336478,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.540312463159665,
   "start_distance_m": 128.0,
   "end_distance_m": 133.0,
   "midpoint_distance_m": 130.5,
   "start_elevation_m": 51.886304818593246,
   "end_elevation_m": 53.46332044175123,
   "start_xy": [
    173883.29558941998,
    6594511.313182895
   ],
   "end_xy": [
    173887.0817174122,
    6594508.042970133
   ]
  },
  "max_10m": {
   "gradient_pct": 30.217943344669322,
   "start_distance_m": 126.0,
   "end_distance_m": 136.0,
   "midpoint_distance_m": 131.0,
   "start_elevation_m": 51.283727608111434,
   "end_elevation_m": 54.305521942578366,
   "start_xy": [
    173881.8934539696,
    6594512.741906017
   ],
   "end_xy": [
    173889.36941617102,
    6594506.098051621
   ]
  },
  "max_20m": {
   "gradient_pct": 29.204256758900726,
   "start_distance_m": 126.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 51.283727608111434,
   "end_elevation_m": 57.12457895989158,
   "start_xy": [
    173881.8934539696,
    6594512.741906017
   ],
   "end_xy": [
    173897.54180256513,
    6594500.66513297
   ]
  },
  "max_25m": {
   "gradient_pct": 28.520475122109474,
   "start_distance_m": 117.0,
   "end_distance_m": 142.0,
   "midpoint_distance_m": 129.5,
   "start_elevation_m": 48.95601530358351,
   "end_elevation_m": 56.08613408411088,
   "start_xy": [
    173875.58384444276,
    6594519.171160066
   ],
   "end_xy": [
    173893.94481368863,
    6594502.208214595
   ]
  },
  "max_50m": {
   "gradient_pct": 27.159722284999415,
   "start_distance_m": 112.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 47.48936459310292,
   "end_elevation_m": 61.06922573560263,
   "start_xy": [
    173872.07850581678,
    6594522.74296787
   ],
   "end_xy": [
    173913.4974939995,
    6594499.294463423
   ]
  },
  "max_100m": {
   "gradient_pct": 23.59515580163428,
   "start_distance_m": 73.0,
   "end_distance_m": 173.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 39.7850373028465,
   "end_elevation_m": 63.38019310448078,
   "start_xy": [
    173838.84034698873,
    6594534.881909445
   ],
   "end_xy": [
    173923.02990990426,
    6594494.630644171
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.644121850650322,
   "start_distance_m": 52.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 54.5,
   "start_elevation_m": 37.61444961199777,
   "end_elevation_m": 37.696655704530286,
   "start_xy": [
    173818.39397891628,
    6594530.050646094
   ],
   "end_xy": [
    173823.30554948509,
    6594530.9917694405
   ]
  },
  "min_10m": {
   "gradient_pct": 2.3851789146004876,
   "start_distance_m": 47.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 52.0,
   "start_elevation_m": 37.45813781307024,
   "end_elevation_m": 37.696655704530286,
   "start_xy": [
    173813.42984598762,
    6594529.584186927
   ],
   "end_xy": [
    173823.30554948509,
    6594530.9917694405
   ]
  },
  "min_20m": {
   "gradient_pct": 3.9141986401170215,
   "start_distance_m": 43.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 53.0,
   "start_elevation_m": 37.307722190659135,
   "end_elevation_m": 38.09056191868254,
   "start_xy": [
    173809.47612897158,
    6594529.887236948
   ],
   "end_xy": [
    173829.13109854894,
    6594532.450571942
   ]
  },
  "min_25m": {
   "gradient_pct": 5.581563404769923,
   "start_distance_m": 40.0,
   "end_distance_m": 65.0,
   "midpoint_distance_m": 52.5,
   "start_elevation_m": 36.96644333196897,
   "end_elevation_m": 38.36183418316145,
   "start_xy": [
    173806.6797889763,
    6594530.981205889
   ],
   "end_xy": [
    173831.0729482369,
    6594532.936839443
   ]
  },
  "min_50m": {
   "gradient_pct": 10.183409561119262,
   "start_distance_m": 6.0,
   "end_distance_m": 56.0,
   "midpoint_distance_m": 31.0,
   "start_elevation_m": 32.570280241441104,
   "end_elevation_m": 37.661985022000735,
   "start_xy": [
    173780.81241781145,
    6594552.880763213
   ],
   "end_xy": [
    173822.3346246411,
    6594530.74863569
   ]
  },
  "min_100m": {
   "gradient_pct": 13.10118312363651,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 32.187966081695,
   "end_elevation_m": 45.28914920533151,
   "start_xy": [
    173776.362,
    6594556.913
   ],
   "end_xy": [
    173864.06616709125,
    6594531.676835206
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.371413753691726,
   "start_distance_m": 131.0,
   "end_distance_m": 133.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 52.775892166677394,
   "end_elevation_m": 53.46332044175123,
   "start_xy": [
    173885.5565849063,
    6594509.339582475
   ],
   "end_xy": [
    173887.0817174122,
    6594508.042970133
   ]
  },
  "max_3m": {
   "gradient_pct": 32.07471835756598,
   "start_distance_m": 127.0,
   "end_distance_m": 130.0,
   "midpoint_distance_m": 128.5,
   "start_elevation_m": 51.5520929084939,
   "end_elevation_m": 52.514334459220876,
   "start_xy": [
    173882.5945216948,
    6594512.0275444565
   ],
   "end_xy": [
    173884.79401865337,
    6594509.987888646
   ]
  }
 },
 "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": 0.588,
   "obstruction_max_height_m": 21.95,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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-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_E173500-N6594000_1m.tif",
   "data/cache/no/nhm-no_dtm_E173500-N6594500_1m.tif"
  ],
  "calculated_at": "2026-10-04T03:44:11+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": [
   "E173500-N6594000",
   "E173500-N6594500"
  ],
  "elevation_blocks": [
   "nhm-dtm-1m"
  ],
  "nhm_laser_projects": [
   {
    "last_flight_date": "2016-06-28",
    "name": "NDH Skien 2pkt 2016",
    "points_per_m2": 2,
    "resolution_m": 0.5,
    "season": "",
    "year": 2016
   },
   {
    "last_flight_date": "2007-01-01",
    "name": "Sauherad 2007",
    "points_per_m2": 1.2,
    "resolution_m": 1,
    "season": "season-unknown",
    "year": 2007
   }
  ],
  "nhm_last_flight_date": "2016-06-28",
  "nhm_flight_season_unknown": [
   "Sauherad 2007"
  ],
  "nhm_retrieved_at": "2026-10-03T19:13:52Z",
  "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,
  "carriageway": {
   "stations": 15,
   "stations_resolved": 15,
   "width_median_m": 4.5,
   "width_p10_m": 2.35,
   "width_min_m": 2.0,
   "width_max_m": 10.25,
   "bounded_share": 0.2,
   "unbounded_share": 0.8,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.5,
   "window_m": [
    117.0,
    142.0
   ],
   "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": 15,
    "stations_resolved": 15,
    "width_median_m": 1.25,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 11.25,
    "bounded_share": 0.867,
    "unbounded_share": 0.133,
    "confidence_median": 1.0,
    "width_median_bounded_m": 1.25,
    "window_m": [
     117.0,
     142.0
    ],
    "width_at_max25_m": 1.0,
    "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": "Midt-Telemark",
  "county": "Telemark",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}