Top panel: RVs obtained with the TERRA procedure vs. time (filled dots). The model RV variation as derived from the solid red interpolation in Fig. 11 by means of the FF′ method is superposed (solid red line). Bottom panel: residuals between the observed TERRA RV and the RV predicted by the FF′ model vs. time. In both panels the size of the RV error bars is comparable with that of the data points in most of the cases.