Influence of velocity distance scaling. The blue and red points show the differences between the best fitting V_tan (left) and V_tot (right) and V_tan,mean and V_tot,mean (computed by scaling the proper motions with the mean Gaia distances D_mean) as a function of D_mean. The crosses show the differences between V_tan and V_tot (computed by scaling the proper motions with the Gaia distances of each star separately) and V_tan,mean and V_tot,mean. No systematic trends with distances are observed.