{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.0849, 6.0609)",
 "slug": "discovered-lane-43-0849-6-0609",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 32.548688200592935,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 192.0,
   "end_distance_m": 194.0,
   "start_elevation_m": 45.96200664020272,
   "end_elevation_m": 46.61298040421458,
   "min_gradient_pct": 2.815537868555751
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.08519317063482,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 191.0,
   "end_distance_m": 194.0,
   "start_elevation_m": 45.65042460909554,
   "end_elevation_m": 46.61298040421458,
   "min_gradient_pct": 2.7471749832083483
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.685040393699325,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 190.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 45.397300591102365,
   "end_elevation_m": 46.88155261078733,
   "min_gradient_pct": 3.1688497232124746
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.191854569906855,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 184.0,
   "end_distance_m": 194.0,
   "start_elevation_m": 43.9937949472239,
   "end_elevation_m": 46.61298040421458,
   "min_gradient_pct": 4.971502961964163
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.93125511084228,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 175.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 41.695301588618875,
   "end_elevation_m": 46.88155261078733,
   "min_gradient_pct": 5.888513658809877
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.586150503139578,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 170.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 40.48501498500244,
   "end_elevation_m": 46.88155261078733,
   "min_gradient_pct": 6.512191412474351
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.739186469687027,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 145.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 35.01195937594382,
   "end_elevation_m": 46.88155261078733,
   "min_gradient_pct": 9.880936509227567
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.713353813353105,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 126.0,
   "end_distance_m": 226.0,
   "start_elevation_m": 31.1603322342641,
   "end_elevation_m": 50.873686047617205,
   "min_gradient_pct": 12.925614643575862
  }
 ],
 "shape": {
  "ascent_concentration": 0.388,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 143.0,
  "shape_class": "sustained"
 },
 "length_m": 262.80874374306217,
 "start_elevation_m": 14.620196130616849,
 "end_elevation_m": 53.93949016440145,
 "endpoint_gain_m": 39.3192940337846,
 "overall_gradient_pct": 14.961181836562309,
 "accumulated_ascent_m": 39.38808719078085,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.685040393699325,
   "start_distance_m": 190.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 192.5,
   "start_elevation_m": 45.397300591102365,
   "end_elevation_m": 46.88155261078733,
   "start_xy": [
    949392.6144453808,
    6225455.398636708
   ],
   "end_xy": [
    949388.0459459227,
    6225457.430584715
   ]
  },
  "max_10m": {
   "gradient_pct": 26.191854569906855,
   "start_distance_m": 184.0,
   "end_distance_m": 194.0,
   "midpoint_distance_m": 189.0,
   "start_elevation_m": 43.9937949472239,
   "end_elevation_m": 46.61298040421458,
   "start_xy": [
    949398.0966447304,
    6225452.9602991
   ],
   "end_xy": [
    949388.9596458143,
    6225457.024195113
   ]
  },
  "max_20m": {
   "gradient_pct": 25.93125511084228,
   "start_distance_m": 175.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 185.0,
   "start_elevation_m": 41.695301588618875,
   "end_elevation_m": 46.88155261078733,
   "start_xy": [
    949406.3199437549,
    6225449.302792688
   ],
   "end_xy": [
    949388.0459459227,
    6225457.430584715
   ]
  },
  "max_25m": {
   "gradient_pct": 25.586150503139578,
   "start_distance_m": 170.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 182.5,
   "start_elevation_m": 40.48501498500244,
   "end_elevation_m": 46.88155261078733,
   "start_xy": [
    949410.888443213,
    6225447.270844681
   ],
   "end_xy": [
    949388.0459459227,
    6225457.430584715
   ]
  },
  "max_50m": {
   "gradient_pct": 23.739186469687027,
   "start_distance_m": 145.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 170.0,
   "start_elevation_m": 35.01195937594382,
   "end_elevation_m": 46.88155261078733,
   "start_xy": [
    949433.7309405033,
    6225437.111104649
   ],
   "end_xy": [
    949388.0459459227,
    6225457.430584715
   ]
  },
  "max_100m": {
   "gradient_pct": 19.713353813353105,
   "start_distance_m": 126.0,
   "end_distance_m": 226.0,
   "midpoint_distance_m": 176.0,
   "start_elevation_m": 31.1603322342641,
   "end_elevation_m": 50.873686047617205,
   "start_xy": [
    949450.6953067468,
    6225428.939077969
   ],
   "end_xy": [
    949365.8378335813,
    6225439.968004872
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 3.1688497232124746,
   "start_distance_m": 244.0,
   "end_distance_m": 249.0,
   "midpoint_distance_m": 246.5,
   "start_elevation_m": 52.88209732694685,
   "end_elevation_m": 53.04053981310747,
   "start_xy": [
    949354.3201371257,
    6225426.135338161
   ],
   "end_xy": [
    949350.790462631,
    6225422.877860456
   ]
  },
  "min_10m": {
   "gradient_pct": 4.971502961964163,
   "start_distance_m": 243.0,
   "end_distance_m": 253.0,
   "midpoint_distance_m": 248.0,
   "start_elevation_m": 52.818951525848455,
   "end_elevation_m": 53.31610182204487,
   "start_xy": [
    949354.960009151,
    6225426.903819645
   ],
   "end_xy": [
    949346.8363793169,
    6225422.273521855
   ]
  },
  "min_20m": {
   "gradient_pct": 5.888513658809877,
   "start_distance_m": 242.0,
   "end_distance_m": 262.0,
   "midpoint_distance_m": 252.0,
   "start_elevation_m": 52.71908387658488,
   "end_elevation_m": 53.89678660834686,
   "start_xy": [
    949355.5998811764,
    6225427.6723011285
   ],
   "end_xy": [
    949338.2790322329,
    6225424.548954755
   ]
  },
  "min_25m": {
   "gradient_pct": 6.512191412474351,
   "start_distance_m": 237.0,
   "end_distance_m": 262.0,
   "midpoint_distance_m": 249.5,
   "start_elevation_m": 52.26873875522827,
   "end_elevation_m": 53.89678660834686,
   "start_xy": [
    949358.7992413029,
    6225431.514708549
   ],
   "end_xy": [
    949338.2790322329,
    6225424.548954755
   ]
  },
  "min_50m": {
   "gradient_pct": 9.880936509227567,
   "start_distance_m": 212.0,
   "end_distance_m": 262.0,
   "midpoint_distance_m": 237.0,
   "start_elevation_m": 48.956318353733074,
   "end_elevation_m": 53.89678660834686,
   "start_xy": [
    949374.7960419356,
    6225450.726745648
   ],
   "end_xy": [
    949338.2790322329,
    6225424.548954755
   ]
  },
  "min_100m": {
   "gradient_pct": 12.925614643575862,
   "start_distance_m": 27.0,
   "end_distance_m": 127.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 18.341202929186018,
   "end_elevation_m": 31.26681757276188,
   "start_xy": [
    949508.2068256784,
    6225359.738893496
   ],
   "end_xy": [
    949450.1747253465,
    6225429.792890012
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 32.548688200592935,
   "start_distance_m": 192.0,
   "end_distance_m": 194.0,
   "midpoint_distance_m": 193.0,
   "start_elevation_m": 45.96200664020272,
   "end_elevation_m": 46.61298040421458,
   "start_xy": [
    949390.7870455976,
    6225456.211415911
   ],
   "end_xy": [
    949388.9596458143,
    6225457.024195113
   ]
  },
  "max_3m": {
   "gradient_pct": 32.08519317063482,
   "start_distance_m": 191.0,
   "end_distance_m": 194.0,
   "midpoint_distance_m": 192.5,
   "start_elevation_m": 45.65042460909554,
   "end_elevation_m": 46.61298040421458,
   "start_xy": [
    949391.7007454891,
    6225455.80502631
   ],
   "end_xy": [
    949388.9596458143,
    6225457.024195113
   ]
  }
 },
 "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": 0.11,
   "obstruction_max_height_m": 7.46,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-pr6",
   "road_pbf": "block-batch-fr-pr6.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:ba95a0bf562c86eb"
  },
  "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
  ],
  "elevation_crs": "EPSG:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E949-N6225_0m5@22LHDQR-2025-03-11.tif"
  ],
  "calculated_at": "2026-09-25T09:19:07+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr6",
  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E949-N6225"
  ],
  "elevation_blocks": [
   "22LHDQR@2025-03-11"
  ],
  "ign_dalles": [
   "LHD_FXX_0949_6226_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHDQR"
  ],
  "ign_editions": [
   "2025-03-11"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0949_6226_MNT_O_0M50_LAMB93_IGN69": "2025-03-11"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 16,
   "stations_resolved": 16,
   "width_median_m": 5.25,
   "width_p10_m": 2.62,
   "width_min_m": 2.5,
   "width_max_m": 10.0,
   "bounded_share": 0.188,
   "unbounded_share": 0.812,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.25,
   "window_m": [
    170.0,
    195.0
   ],
   "width_at_max25_m": 2.88,
   "window_stations": 6,
   "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": 16,
    "stations_resolved": 16,
    "width_median_m": 7.38,
    "width_p10_m": 1.25,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.562,
    "unbounded_share": 0.438,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.0,
    "window_m": [
     170.0,
     195.0
    ],
    "width_at_max25_m": 2.38,
    "window_stations": 6,
    "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": "Carqueiranne",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}