Residuals and errors of the RVs in black dots folded to a period of 20.5 (top panel) and 10.4 days (bottom panel) with semi-amplitudes of 1.88 and 2.52 m s^-1, respectively. We used the data after pre-whitening the 16.3-day signal (top) and the 16.3- and 6.9-day signal (bottom) using the MA method. The red dots correspond to averages in 0.05 phase intervals. We show the best sinusoidal fits in blue.