Posterior distributions of the retrievals from the top panel of Figure 4 (the inset refers to non-shared parameters). The colors are maintained across the figures: black indicates baseline retrieval, blue the SiO₂-only retrieval, red the constant cloud retrieval, and gold the Gaussian particle distribution retrieval. The SiO₂-only retrieval shows that a large wavelength coverage allows us to distinguish aerosol properties. The other retrievals indicate that this dataset is poorly sensitive to the vertical aerosol abundance distribution, but that the size of the largest particles in the distribution can be recovered (see the negative correlation between the mean and the variance of the Gaussian distribution).