Radial velocity due to activity (black dots) and activity superposed on meridional flows (red dots) vs. time for various inclinations, and corresponding periodograms. Meridional flows alone (reconstruction from U10) are shown as a solid green line after interpolation as in Fig. 7. Offsets are arbitrary (the lowest value for each series has been arbitrarily set to zero). The last plot shows the correlation between the two time series (without and with meridional flows) versus inclination.