Bar chart showing the differences of the log-evidence of the 21 tested models (labelled on the X-axis) and the 0p model. The grey, green, and blue bars correspond to models with zero, one, and two planets, respectively. The red and grey circles indicate the posterior semi-amplitudes and RV jitters of the tested models. The red crosses indicate null semi-amplitude values, either because they correspond to a model without planets, or because the MCMC fit did not converge.