Comparison of the logarithm of the Bayesian evidence (ℬ = In 𝒵) for the different tested models (labeled in the X axis) in the case of the RV-only analysis (Sect. 4.2). The labels for the models correspond to Xp[P_ic][Z], where X is the number of planets assumed in the system, P_ic are the identifiers of the planets with assumed circular orbits, and Z indicates whether we are using a flat (F) slope (i.e., assuming slope = 0) or a quadratic (Q) trend. The gray-shaded region displays the region of Δ𝒵 = −6 from the larger evidence model showing its strength against simpler models.