Normalised velocity distributions of GC stars for three sub-regions of the catalogue from the vertical division. The first, second, and third columns correspond to sub-regions 1, 2, and 3, respectively, progressing from south to north. The individual Gaussian components are presented as dashed lines and the global solution by a thick solid line. Upper panels: direction parallel to the Galactic plane. NSD stars moving eastwards are shown in red, NSD stars moving westwards in orange, and bulge stars in green. Lower panels: direction perpendicular to the Galactic plane. NSD stars are shown in orange and bulge stars in green.