Galactic plane-crossing locations of the program stars (the black rimmed, red and blue shaded areas have the same meaning as in Fig. 3). The full circle in the middle indicates the position of the GC. The dashed circles have radii of 8 and 20 kpc, thus roughly indicating the solar circle and the outer edge of the Galactic disk, which rotates clockwise in this plot. Because Gaia DR2 and HST proper motions are inconsistent for B711, the trajectories were calculated for both cases. Results based on proper motions from HST are marked by the suffix (H).