Simulation of CARMENES data from a K7 star with a 5 M_⊕ planet, with an 62.85-day orbital period using a strategy of 23 data points per semester over four semesters (middle panel in Fig. 4). Upper panel: simulated radial velocity time series. Bottom left: periodogram and the significance levels. The vertical dashed line shows the simulated period. Bottom right: phase-folded radial velocity.