BIC weighted comparison of the power-law and composite models. For each family, we marginalised over the three posteriors given by the three perturber inclusion scenarios, which results in the multi-modality of some of the parameters such as γ. We obtained ${\theta }_{\mathrm{E}}^{\mathrm{PL}}=1.356\pm 0.115$, γ_pl = 1.88 ± 0.04, ${\gamma }_{\mathrm{ext}}^{\mathrm{PL}}=0.14\pm 0.01$, ${\theta }_{\mathrm{E}}^{\mathrm{Comp}}=1.37\pm 0.057$, ${\gamma }_{\mathrm{ext}}^{\mathrm{Comp}}=0.12\pm 0.02$, and γ^Comp = 2.03 ± 0.08.