Radial velocity anomaly due to the RM effect (top panel) and residuals between the data and model (bottom panel). The detrended stellar radial velocity values observed with CARMENES (four transits) are presented as grey stars. HARPS-N data sets (five transits) are presented as black dots. The blue line shows the model resulting from the combination of the HARPS-N and CARMENES best-fit models. In light blue we present the 1σ and 3σ uncertainties of the model.