Posterior projections of the mass and eccentricity distributions. They demonstrate that the eccentricities and planet masses are hardly correlated (panels a-d), while the planet masses themselves are correlated (panel e), as are the eccentricities (panel f). The color scheme in (f) is purple for when both resonance angles librate such that ϖ_b − ϖ_c ≡ Δϖ librates around π; green for when ϕ₁ circulates and ϕ₂ librates so that Δϖ circulates; red for when both resonance angles circulate such that Δϖ librates around zero; and pink and light green for the possible values of the eccentricities given the MAP value of u and arbitrary values of v. The true resonance angle ψ librates with a small amplitude around zero for all posterior solutions (Sect. 5.4 and Fig. 8). The stars indicate the posterior sample closest to the fixed-point eccentricities, and the squares and triangles indicate the median and MAP values, respectively. Fig. A.2 shows the projections of the other parameters.