RVs over time for the best model (1P_(5d-ecc) + dSHO-GP_28d) fitted to the HARPS (top) and CARMENES (bottom) RVs of GJ 724. The GP component of the model is plotted as the orange solid line. The black lines show the median of 10 000 samples from the posterior and the grey shaded areas denote the 68 %, 95 %, and 99 % confidence intervals, respectively. Instrumental RV offsets were subtracted from the measurements and the model, and the error bars include the jitter added in quadrature. The residuals after subtracting the median model are shown in the lower panel.