Posterior of the standard deviation of the Gaussian component for the Isotropic + correlated Gaussian model, when we allowed for correlation with the component masses, as a function of the primary mass m₁. The thin black lines are individual posterior draws, the colored band is the 90% CI, and the thick dashed line is the median. The two horizontal think dotted lines enclose the 90% CI for the Isotropic + Gaussian model, which does not allow for correlations. Finally, the two thin blue dashed lines enclose the 90% CI obtained sampling the prior.