Kinematic properties of the HVSs of one of our mock catalogs, corresponding to a Galaxy whose DM halo has a triaxial gravitational potential with (q_y, q_z) = (1.2, 0.9). The gray histograms represent the full sample of HVSs; the green histograms represent our observed sample, derived from the full sample by requiring r > 10 kpc and v_r > 0. Top left panel: Distribution of galactocentric distances; the vertical dashed line corresponds to our threshold radius r > 10 kpc. Top right panel: Distribution of the radial velocities; the vertical dashed line corresponds to v_r = 0. Bottom left panel: Distribution of the latitudinal velocities. Bottom right panel: Distribution of the azimuthal velocities.