Spatial distribution in Galactic coordinates of the global spectroscopic sample considered in this study compared to the σ_RV contours (solid lines) of the Z14 map. The GIBS fields used to derive the map of Z14 are marked as gray circles, while the cyan symbols refer to the additional fields used in this work to derive new map. Specifically, the new MUSE fields (red squares), the APOGEE fields (cyan triangles), and the V18 fields (cyan stars).