Derived radial velocities vs activity proxies. The raw time series (after removal of a constant RV offset) is shown in the leftmost column. A ∼20 min gap in the data collection is apparent toward the end of night 2, which resulted from an interruption of the corresponding observation block. The remaining columns show the relationship (on a nightly basis) between the RVs and associated CCF parameters (FWHM, contrast, BIS, and asymmetry). Each panel is supplemented by Pearson’s correlation coefficient, R.