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[ 680903.991510876, 6263880.898421527 ], "end_xy": [ 680902.2856831508, 6263879.854318192 ] }, "max_3m": { "gradient_pct": 29.9625133919335, "start_distance_m": 512.0, "end_distance_m": 515.0, "midpoint_distance_m": 513.5, "start_elevation_m": 355.09338221620965, "end_elevation_m": 355.99225761796765, "start_xy": [ 680903.991510876, 6263880.898421527 ], "end_xy": [ 680901.4327692882, 6263879.332266525 ] } }, "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). 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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": [ "E679-N6262", "E679-N6263", "E680-N6262", "E680-N6263", "E680-N6264", "E681-N6263", "E681-N6264" ], "elevation_blocks": [ "21LHD3KQ@2025-06-06" ], "ign_dalles": [ "LHD_FXX_0679_6263_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0679_6264_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0680_6263_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0680_6264_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0680_6265_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0681_6264_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0681_6265_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD3KQ" ], "ign_editions": [ "2025-06-06" ], "ign_dsm_edition": { "LHD_FXX_0679_6263_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_0679_6264_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_0680_6263_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_0680_6264_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_0680_6265_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_0681_6264_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_0681_6265_MNT_O_0M50_LAMB93_IGN69": "2025-06-06" }, "route_summit_trim_m": 614.5, "route_summit_trim_loss_m": 28.8, "climb_origin": "discovered", "structure_own_ways": 3, "carriageway": { "stations": 89, "stations_resolved": 89, "width_median_m": 4.75, "width_p10_m": 2.5, "width_min_m": 1.25, "width_max_m": 12.0, "bounded_share": 0.528, "unbounded_share": 0.472, "confidence_median": 0.538, "width_median_bounded_m": 4.75, "window_m": [ 635.0, 660.0 ], "width_at_max25_m": 5.25, "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": 89, "stations_resolved": 89, "width_median_m": 3.0, "width_p10_m": 0.75, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.888, "unbounded_share": 0.112, "confidence_median": 1.0, "width_median_bounded_m": 2.5, "window_m": [ 635.0, 660.0 ], "width_at_max25_m": 5.38, "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": "Saint-Pons-de-Thomi\u00e8res", "county": "H\u00e9rault", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }