Distributions of heliocentric space-velocity components U, V, and W for K–M dwarfs in the MCC sample. The mean values of U and W and their errors, indicated in the panels, are from the GMM (red line). For V (panels b) and e)), the Gaussian curves of the Besançon model simulations are shown for different age groups and for the entire population. The percentages indicated are relative numbers of model stars in different age groups.