{
 "ocl_version": "0.1.0",
 "name": "Eitland",
 "slug": "eitland",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.884981802928728,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 85.0,
   "end_distance_m": 87.0,
   "start_elevation_m": 28.850587120820055,
   "end_elevation_m": 29.30828675687863,
   "min_gradient_pct": -19.725765435039833
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.374005881631593,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 228.0,
   "end_distance_m": 231.0,
   "start_elevation_m": 47.99066761714629,
   "end_elevation_m": 48.66188779359524,
   "min_gradient_pct": -19.335453662513896
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.76752317132994,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 228.0,
   "end_distance_m": 233.0,
   "start_elevation_m": 47.99066761714629,
   "end_elevation_m": 49.07904377571279,
   "min_gradient_pct": -19.09201761766937
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.63914854109798,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 228.0,
   "end_distance_m": 238.0,
   "start_elevation_m": 47.99066761714629,
   "end_elevation_m": 50.15458247125609,
   "min_gradient_pct": -18.09732581612998
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.939905471692022,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 221.0,
   "end_distance_m": 241.0,
   "start_elevation_m": 46.56837158379528,
   "end_elevation_m": 50.75635267813369,
   "min_gradient_pct": -17.492559778602477
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.404685262640015,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 216.0,
   "end_distance_m": 241.0,
   "start_elevation_m": 45.655181362473684,
   "end_elevation_m": 50.75635267813369,
   "min_gradient_pct": -16.616795950489546
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.942356084990166,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 189.0,
   "end_distance_m": 239.0,
   "start_elevation_m": 40.88824988102026,
   "end_elevation_m": 50.35942792351534,
   "min_gradient_pct": -12.820512827935772
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.134074268555672,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 142.0,
   "end_distance_m": 242.0,
   "start_elevation_m": 32.78076991605159,
   "end_elevation_m": 50.91484418460726,
   "min_gradient_pct": -9.332843543791427
  }
 ],
 "shape": {
  "ascent_concentration": 0.536,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 111.0,
  "shape_class": "stepped"
 },
 "length_m": 847.0000001345726,
 "start_elevation_m": 16.92041659153826,
 "end_elevation_m": 56.31827882444592,
 "endpoint_gain_m": 39.397862232907656,
 "overall_gradient_pct": 4.651459530891153,
 "accumulated_ascent_m": 57.13657004401884,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.76752317132994,
   "start_distance_m": 228.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 230.5,
   "start_elevation_m": 47.99066761714629,
   "end_elevation_m": 49.07904377571279,
   "start_xy": [
    28654.201448492033,
    6462295.896218514
   ],
   "end_xy": [
    28653.673338176497,
    6462290.95856713
   ]
  },
  "max_10m": {
   "gradient_pct": 21.63914854109798,
   "start_distance_m": 228.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 233.0,
   "start_elevation_m": 47.99066761714629,
   "end_elevation_m": 50.15458247125609,
   "start_xy": [
    28654.201448492033,
    6462295.896218514
   ],
   "end_xy": [
    28651.61741759505,
    6462286.446815101
   ]
  },
  "max_20m": {
   "gradient_pct": 20.939905471692022,
   "start_distance_m": 221.0,
   "end_distance_m": 241.0,
   "midpoint_distance_m": 231.0,
   "start_elevation_m": 46.56837158379528,
   "end_elevation_m": 50.75635267813369,
   "start_xy": [
    28654.386263971253,
    6462302.910057443
   ],
   "end_xy": [
    28649.781065848234,
    6462284.065700261
   ]
  },
  "max_25m": {
   "gradient_pct": 20.404685262640015,
   "start_distance_m": 216.0,
   "end_distance_m": 241.0,
   "midpoint_distance_m": 228.5,
   "start_elevation_m": 45.655181362473684,
   "end_elevation_m": 50.75635267813369,
   "start_xy": [
    28653.099559677394,
    6462307.713992052
   ],
   "end_xy": [
    28649.781065848234,
    6462284.065700261
   ]
  },
  "max_50m": {
   "gradient_pct": 18.942356084990166,
   "start_distance_m": 189.0,
   "end_distance_m": 239.0,
   "midpoint_distance_m": 214.0,
   "start_elevation_m": 40.88824988102026,
   "end_elevation_m": 50.35942792351534,
   "start_xy": [
    28641.607888880113,
    6462332.103838939
   ],
   "end_xy": [
    28651.00530034611,
    6462285.653110155
   ]
  },
  "max_100m": {
   "gradient_pct": 18.134074268555672,
   "start_distance_m": 142.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 192.0,
   "start_elevation_m": 32.78076991605159,
   "end_elevation_m": 50.91484418460726,
   "start_xy": [
    28656.329637311836,
    6462366.46842615
   ],
   "end_xy": [
    28649.168948599294,
    6462283.271995314
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -19.09201761766937,
   "start_distance_m": 302.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 304.5,
   "start_elevation_m": 48.06234273483841,
   "end_elevation_m": 47.10774185395494,
   "start_xy": [
    28619.215036667985,
    6462231.980906698
   ],
   "end_xy": [
    28617.67522632791,
    6462227.211695077
   ]
  },
  "min_10m": {
   "gradient_pct": -18.09732581612998,
   "start_distance_m": 303.0,
   "end_distance_m": 313.0,
   "midpoint_distance_m": 308.0,
   "start_elevation_m": 47.87679443366379,
   "end_elevation_m": 46.06706185205079,
   "start_xy": [
    28618.90707459997,
    6462231.027064374
   ],
   "end_xy": [
    28615.827453919817,
    6462221.4886411335
   ]
  },
  "min_20m": {
   "gradient_pct": -17.492559778602477,
   "start_distance_m": 298.0,
   "end_distance_m": 318.0,
   "midpoint_distance_m": 308.0,
   "start_elevation_m": 48.681406947650544,
   "end_elevation_m": 45.18289499193005,
   "start_xy": [
    28620.446884940047,
    6462235.796275994
   ],
   "end_xy": [
    28614.28764357974,
    6462216.719429513
   ]
  },
  "min_25m": {
   "gradient_pct": -16.616795950489546,
   "start_distance_m": 297.0,
   "end_distance_m": 322.0,
   "midpoint_distance_m": 309.5,
   "start_elevation_m": 48.811382183044984,
   "end_elevation_m": 44.6571831954226,
   "start_xy": [
    28620.754847008062,
    6462236.750118318
   ],
   "end_xy": [
    28613.05579530768,
    6462212.904060217
   ]
  },
  "min_50m": {
   "gradient_pct": -12.820512827935772,
   "start_distance_m": 293.0,
   "end_distance_m": 343.0,
   "midpoint_distance_m": 318.0,
   "start_elevation_m": 49.0995640336082,
   "end_elevation_m": 42.68930761964032,
   "start_xy": [
    28621.986695280124,
    6462240.565487614
   ],
   "end_xy": [
    28611.445921037688,
    6462191.9711958505
   ]
  },
  "min_100m": {
   "gradient_pct": -9.332843543791427,
   "start_distance_m": 260.0,
   "end_distance_m": 360.0,
   "midpoint_distance_m": 310.0,
   "start_elevation_m": 51.57878675535534,
   "end_elevation_m": 42.24594321156391,
   "start_xy": [
    28637.536818512024,
    6462269.486094768
   ],
   "end_xy": [
    28615.77380242428,
    6462175.791754735
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.884981802928728,
   "start_distance_m": 85.0,
   "end_distance_m": 87.0,
   "midpoint_distance_m": 86.0,
   "start_elevation_m": 28.850587120820055,
   "end_elevation_m": 29.30828675687863,
   "start_xy": [
    28620.05242328884,
    6462398.09590219
   ],
   "end_xy": [
    28619.111592477693,
    6462396.325743868
   ]
  },
  "max_3m": {
   "gradient_pct": 22.374005881631593,
   "start_distance_m": 228.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 229.5,
   "start_elevation_m": 47.99066761714629,
   "end_elevation_m": 48.66188779359524,
   "start_xy": [
    28654.201448492033,
    6462295.896218514
   ],
   "end_xy": [
    28654.122241858084,
    6462292.890287545
   ]
  }
 },
 "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": 0.14,
   "obstruction_max_height_m": 9.27,
   "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-b01",
   "road_pbf": "no-b01-block-batch-no-b01.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_E28000-N6461500_1m.tif",
   "data/cache/no/nhm-no_dtm_E28000-N6462000_1m.tif",
   "data/cache/no/nhm-no_dtm_E28500-N6461500_1m.tif",
   "data/cache/no/nhm-no_dtm_E28500-N6462000_1m.tif"
  ],
  "calculated_at": "2026-10-03T20:13:09+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/no-b01-block-batch-no-b01.osm.pbf",
  "osm_snapshot": "",
  "run_id": "no-b01",
  "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": [
   "E28000-N6461500",
   "E28000-N6462000",
   "E28500-N6461500",
   "E28500-N6462000"
  ],
  "elevation_blocks": [
   "nhm-dtm-1m"
  ],
  "nhm_laser_projects": [
   {
    "last_flight_date": "2009-01-01",
    "name": "Farsund Lyngdal 2009",
    "points_per_m2": 1.8,
    "resolution_m": 1,
    "season": "season-unknown",
    "year": 2009
   },
   {
    "last_flight_date": "2017-05-05",
    "name": "NDH Farsund-Lyngdal-H\u00e6gebostad 5pkt 2017",
    "points_per_m2": 5,
    "resolution_m": 0.25,
    "season": "",
    "year": 2017
   }
  ],
  "nhm_last_flight_date": "2017-05-05",
  "nhm_flight_season_unknown": [
   "Farsund Lyngdal 2009"
  ],
  "nhm_retrieved_at": "2026-10-03T17:10:08Z",
  "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",
  "route_summit_trim_m": 97.8,
  "route_summit_trim_loss_m": 3.1,
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 4,
  "tunnel_check": "osm tunnel=* ways on 4 own way(s)",
  "tunnel_ranges_m": [],
  "underground_fraction": 0.0,
  "carriageway": {
   "stations": 40,
   "stations_resolved": 40,
   "width_median_m": 4.88,
   "width_p10_m": 3.5,
   "width_min_m": 2.75,
   "width_max_m": 11.25,
   "bounded_share": 0.525,
   "unbounded_share": 0.475,
   "confidence_median": 0.526,
   "width_median_bounded_m": 4.25,
   "window_m": [
    216.0,
    241.0
   ],
   "width_at_max25_m": 3.75,
   "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": 40,
    "stations_resolved": 40,
    "width_median_m": 2.88,
    "width_p10_m": 1.25,
    "width_min_m": 0.75,
    "width_max_m": 12.0,
    "bounded_share": 0.925,
    "unbounded_share": 0.075,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     216.0,
     241.0
    ],
    "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": "Lyngdal",
  "county": "Agder",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}