Histogram of RV rms for 52 stars with more than five observations and a 3σ-clipping of the RV rms using observations (red), initial (blue) and final (black) simulations. The initial RV rms distribution does not include any activity jitter, whereas the final distribution includes it by quadratically adding the RV rms as observed for each individual target. For the simulations, we have uncertainties of the histogram values in the order of (0.92N_S)^0.5 and (0.94N_S)^0.5 for the black and blue curve. respectively, with N_S being the number of stars. They are not shown for reason of clarity.