Summary of the results for selected iXX models. Blue colours mark the aligned case with β = 0 and magenta colours mark the free angles cases with β = 0.25 in all graphs. Left panel: relative deviations of a/R_S and R_p/R_S fits from their input values. Middle panel: fitted angles Ω_* and I_* free angles case assuming β = 0.25. Right panel: computed differences, ∆AIC and ∆BIC, between the free angles and fixed angles cases. Filled circles mark the ‘yn’ scenarios (red noise considered) and empty circles mark the ‘nn’ scenarios (no red noise). The two grey shaded zones correspond to differences of 5 and 10, respectively, representing two thresholds of rejection.