Comparison of global RV time series. Top left: RV time series of J07446+035 (YZ CMi, GJ 285) computed with the average of all the individual line RVs (LAV, black dots), serval (orange diamonds), and CCF (blue squares). Middle left: Difference between the LAV and the serval (orange diamonds) and CCF (blue squares) RVs. Bottom left: Number of lines used per observation. Right: Correlation between the LAV and the serval (orange diamonds) and CCF (blue squares) RVs.