Line-of-sight kinematics of the MW bulge. The panels show the mean line-of-sight radial velocity (top) and the line-of-sight velocity dispersion (bottom) versus longitude measured at different latitudes and in [Fe/H] bins, as marked in the header of the top panels. The line colour indicates the latitude range. The panels are based on the data within <3.5 kpc around the Galactic centre. In each panel, the black lines show the averaged velocity and velocity dispersion profiles for all stellar populations of the entire region.