Top-down view of the sample of RC stars with [Fe/H] < −0.5 dex (top panel, ∼3 × 10⁵ stars) and [Fe/H] > −0.5 dex (middle panel, ∼2.3 × 10⁶ stars) color-coded according to the proper motion along Galactic longitude corrected by the motion of the Sun, . Black lines correspond to lines of constant mas yr⁻¹. The bottom panel is color-coded according to the difference in the mean proper motion for metal-rich ([Fe/H] > −0.5 dex) and metal-poor stars ([Fe/H] < −0.5 dex) in each spatial bin. The black cross denotes the position of the Galactic Center, and gray dashed lines are the same as in Fig. 2.