Inspection of the velocity vector components. Left: median angular difference θ_VPOS between the orbital poles and the VPOS normal for our sample of MW satellites, as a function of their Galactocentric radial velocity V_rad; the red solid line is for reference only, since it helps to identify satellites that are approaching the MW (V_rad[km s⁻¹] < 0) or receding from it (V_rad[km s⁻¹] > 0); the red dashed lines represent the aperture angles around the two opposite poles of the VPOS. Right: θ_VPOS as a function of the ratio; systems with , marked by the red solid line, show a tangential velocity excess. Symbols and colours in both panels as in Fig. 3; error bars for the uncertain systems, which are large, are not shown for clarity.