Comparison of the P11 P_μ values (y axis) with our P_RV values (x axis) for single stars. The dashed vertical line represents the radial velocity membership criterion (50%). The blue HB candidates from P11 are highlighted in blue diamonds. Blue diamonds without a central point are velocity variable. Their radial velocity membership position reflects the membership probability of their mean radial velocity. Marginal distributions along each axis are presented in the top and right panels.