{
 "ocl_version": "0.1.0",
 "name": "Lane near Jenstad",
 "slug": "discovered-lane-62-5057-9-0814",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.804588558026808,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1262.0,
   "end_distance_m": 1264.0,
   "start_elevation_m": 694.0080688643701,
   "end_elevation_m": 694.5041606355306,
   "min_gradient_pct": -12.175857979877946
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.781887136662288,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1262.0,
   "end_distance_m": 1265.0,
   "start_elevation_m": 694.0080688643701,
   "end_elevation_m": 694.72152547847,
   "min_gradient_pct": -10.976206400797158
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.317126088400983,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1262.0,
   "end_distance_m": 1267.0,
   "start_elevation_m": 694.0080688643701,
   "end_elevation_m": 695.1239251687902,
   "min_gradient_pct": -10.807868189363035
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.225545741859833,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 922.0,
   "end_distance_m": 932.0,
   "start_elevation_m": 639.0645322105233,
   "end_elevation_m": 641.1870867847093,
   "min_gradient_pct": -9.804799362347012
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.78874791676128,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 911.0,
   "end_distance_m": 931.0,
   "start_elevation_m": 636.8128156210774,
   "end_elevation_m": 640.9705652044297,
   "min_gradient_pct": -9.218140826513377
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.572538259422345,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 911.0,
   "end_distance_m": 936.0,
   "start_elevation_m": 636.8128156210774,
   "end_elevation_m": 641.955950185933,
   "min_gradient_pct": -9.027193925347092
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.687934115469716,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 911.0,
   "end_distance_m": 961.0,
   "start_elevation_m": 636.8128156210774,
   "end_elevation_m": 646.6567826788123,
   "min_gradient_pct": -8.814834836695809
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.170211174419478,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1175.0,
   "end_distance_m": 1275.0,
   "start_elevation_m": 677.5285749557333,
   "end_elevation_m": 696.6987861301528,
   "min_gradient_pct": -8.168544034501451
  }
 ],
 "shape": {
  "ascent_concentration": 0.355,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 393.0,
  "shape_class": "sustained"
 },
 "length_m": 2249.1493943598707,
 "start_elevation_m": 512.1053576377024,
 "end_elevation_m": 752.5803323974092,
 "endpoint_gain_m": 240.4749747597068,
 "overall_gradient_pct": 10.691818665435886,
 "accumulated_ascent_m": 254.15708218777297,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.317126088400983,
   "start_distance_m": 1262.0,
   "end_distance_m": 1267.0,
   "midpoint_distance_m": 1264.5,
   "start_elevation_m": 694.0080688643701,
   "end_elevation_m": 695.1239251687902,
   "start_xy": [
    195458.16858591491,
    6944508.690754454
   ],
   "end_xy": [
    195460.04221505948,
    6944504.0609616805
   ]
  },
  "max_10m": {
   "gradient_pct": 21.225545741859833,
   "start_distance_m": 922.0,
   "end_distance_m": 932.0,
   "midpoint_distance_m": 927.0,
   "start_elevation_m": 639.0645322105233,
   "end_elevation_m": 641.1870867847093,
   "start_xy": [
    195267.34875295096,
    6944787.182904822
   ],
   "end_xy": [
    195273.53209803966,
    6944779.319261031
   ]
  },
  "max_20m": {
   "gradient_pct": 20.78874791676128,
   "start_distance_m": 911.0,
   "end_distance_m": 931.0,
   "midpoint_distance_m": 921.0,
   "start_elevation_m": 636.8128156210774,
   "end_elevation_m": 640.9705652044297,
   "start_xy": [
    195261.02801258911,
    6944796.195496874
   ],
   "end_xy": [
    195272.90254600343,
    6944780.097168428
   ]
  },
  "max_25m": {
   "gradient_pct": 20.572538259422345,
   "start_distance_m": 911.0,
   "end_distance_m": 936.0,
   "midpoint_distance_m": 923.5,
   "start_elevation_m": 636.8128156210774,
   "end_elevation_m": 641.955950185933,
   "start_xy": [
    195261.02801258911,
    6944796.195496874
   ],
   "end_xy": [
    195276.0503061845,
    6944776.207631444
   ]
  },
  "max_50m": {
   "gradient_pct": 19.687934115469716,
   "start_distance_m": 911.0,
   "end_distance_m": 961.0,
   "midpoint_distance_m": 936.0,
   "start_elevation_m": 636.8128156210774,
   "end_elevation_m": 646.6567826788123,
   "start_xy": [
    195261.02801258911,
    6944796.195496874
   ],
   "end_xy": [
    195293.029376257,
    6944757.846745818
   ]
  },
  "max_100m": {
   "gradient_pct": 19.170211174419478,
   "start_distance_m": 1175.0,
   "end_distance_m": 1275.0,
   "midpoint_distance_m": 1225.0,
   "start_elevation_m": 677.5285749557333,
   "end_elevation_m": 696.6987861301528,
   "start_xy": [
    195413.26174951927,
    6944583.173392525
   ],
   "end_xy": [
    195462.2697887959,
    6944496.385671297
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.807868189363035,
   "start_distance_m": 2182.0,
   "end_distance_m": 2187.0,
   "midpoint_distance_m": 2184.5,
   "start_elevation_m": 757.6420676736273,
   "end_elevation_m": 757.1016742641591,
   "start_xy": [
    195957.56634763337,
    6944009.5933688665
   ],
   "end_xy": [
    195955.59981611962,
    6944004.992348302
   ]
  },
  "min_10m": {
   "gradient_pct": -9.804799362347012,
   "start_distance_m": 2178.0,
   "end_distance_m": 2188.0,
   "midpoint_distance_m": 2183.0,
   "start_elevation_m": 757.9828476507445,
   "end_elevation_m": 757.0023677145098,
   "start_xy": [
    195959.1395728444,
    6944013.2741853185
   ],
   "end_xy": [
    195955.2823582557,
    6944004.044859077
   ]
  },
  "min_20m": {
   "gradient_pct": -9.218140826513377,
   "start_distance_m": 2201.0,
   "end_distance_m": 2221.0,
   "midpoint_distance_m": 2211.0,
   "start_elevation_m": 756.0119448169853,
   "end_elevation_m": 754.1683166516826,
   "start_xy": [
    195951.96340970523,
    6943991.471973754
   ],
   "end_xy": [
    195947.66713703133,
    6943971.935519187
   ]
  },
  "min_25m": {
   "gradient_pct": -9.027193925347092,
   "start_distance_m": 2200.0,
   "end_distance_m": 2225.0,
   "midpoint_distance_m": 2212.5,
   "start_elevation_m": 756.1049185954996,
   "end_elevation_m": 753.8481201141628,
   "start_xy": [
    195952.18778717305,
    6943992.447227738
   ],
   "end_xy": [
    195947.3014921036,
    6943967.953458833
   ]
  },
  "min_50m": {
   "gradient_pct": -8.814834836695809,
   "start_distance_m": 2181.0,
   "end_distance_m": 2231.0,
   "midpoint_distance_m": 2206.0,
   "start_elevation_m": 757.7382678575273,
   "end_elevation_m": 753.3308504391794,
   "start_xy": [
    195957.95965393612,
    6944010.51357298
   ],
   "end_xy": [
    195948.48540105627,
    6943962.073285869
   ]
  },
  "min_100m": {
   "gradient_pct": -8.168544034501451,
   "start_distance_m": 2133.0,
   "end_distance_m": 2233.0,
   "midpoint_distance_m": 2183.0,
   "start_elevation_m": 761.3563844295148,
   "end_elevation_m": 753.1878403950134,
   "start_xy": [
    195935.77588167315,
    6944038.608393014
   ],
   "end_xy": [
    195949.12956568546,
    6943960.178315103
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.804588558026808,
   "start_distance_m": 1262.0,
   "end_distance_m": 1264.0,
   "midpoint_distance_m": 1263.0,
   "start_elevation_m": 694.0080688643701,
   "end_elevation_m": 694.5041606355306,
   "start_xy": [
    195458.16858591491,
    6944508.690754454
   ],
   "end_xy": [
    195459.02615429185,
    6944506.882310841
   ]
  },
  "max_3m": {
   "gradient_pct": 23.781887136662288,
   "start_distance_m": 1262.0,
   "end_distance_m": 1265.0,
   "midpoint_distance_m": 1263.5,
   "start_elevation_m": 694.0080688643701,
   "end_elevation_m": 694.72152547847,
   "start_xy": [
    195458.16858591491,
    6944508.690754454
   ],
   "end_xy": [
    195459.4091427202,
    6944505.95967466
   ]
  }
 },
 "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": 0.061,
   "obstruction_max_height_m": 12.41,
   "flagged_windows_m": [
    2,
    3,
    5
   ]
  },
  "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-b09",
   "road_pbf": "no-b09-block-batch-no-b09.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_E194500-N6944500_1m.tif",
   "data/cache/no/nhm-no_dtm_E194500-N6945000_1m.tif",
   "data/cache/no/nhm-no_dtm_E195000-N6944000_1m.tif",
   "data/cache/no/nhm-no_dtm_E195000-N6944500_1m.tif",
   "data/cache/no/nhm-no_dtm_E195000-N6945000_1m.tif",
   "data/cache/no/nhm-no_dtm_E195500-N6943500_1m.tif",
   "data/cache/no/nhm-no_dtm_E195500-N6944000_1m.tif",
   "data/cache/no/nhm-no_dtm_E195500-N6944500_1m.tif"
  ],
  "calculated_at": "2026-10-04T02:37:09+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/no-b09-block-batch-no-b09.osm.pbf",
  "osm_snapshot": "",
  "run_id": "no-b09",
  "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": [
   "E194500-N6944500",
   "E194500-N6945000",
   "E195000-N6944000",
   "E195000-N6944500",
   "E195000-N6945000",
   "E195500-N6943500",
   "E195500-N6944000",
   "E195500-N6944500"
  ],
  "elevation_blocks": [
   "nhm-dtm-1m"
  ],
  "nhm_laser_projects": [
   {
    "last_flight_date": "2013-07-30",
    "name": "Sunndal 2011-2013",
    "points_per_m2": 2,
    "resolution_m": 0.5,
    "season": "",
    "year": 2011
   }
  ],
  "nhm_last_flight_date": "2013-07-30",
  "nhm_retrieved_at": "2026-10-03T23:30:03Z",
  "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": 97,
   "stations_resolved": 97,
   "width_median_m": 4.5,
   "width_p10_m": 3.25,
   "width_min_m": 2.25,
   "width_max_m": 9.5,
   "bounded_share": 0.546,
   "unbounded_share": 0.454,
   "confidence_median": 0.55,
   "width_median_bounded_m": 4.25,
   "window_m": [
    911.0,
    936.0
   ],
   "width_at_max25_m": 4.25,
   "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": 97,
    "stations_resolved": 97,
    "width_median_m": 4.75,
    "width_p10_m": 2.0,
    "width_min_m": 1.0,
    "width_max_m": 11.25,
    "bounded_share": 0.959,
    "unbounded_share": 0.041,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.75,
    "window_m": [
     911.0,
     936.0
    ],
    "width_at_max25_m": 5.75,
    "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
   }
  },
  "naming_note": "birth-named at adoption (nearest OSM village/hamlet/locality node ('Jenstad'))",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Sunndal",
  "county": "M\u00f8re og Romsdal",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}