Results from the baseline analysis for run 13 (orange dashed), compared to the results from the other studied grain size distribution results: fixed grain size with a = 1 nm (blue solid), fixed grain size with a = 10 nm (gray dashed), fixed grain size with a = 100 nm (green dotted), and explicit modeling of the grain size distribution n(a) ~ a^−3.5 (purple dotted). Top: SED predictions as a function of the modeling of the grain size distribution. Bottom: Ratios between the SED of each studied case and the baseline (effective mixture of grains with a distribution of n(a) ~ a−^3.5), with the light and dark gray bands showing a 10% and 20% difference, respectively.