For the "oxyacid + mix", we see that the relatively high concentrations of FA and NA act as catalysts for nucleation leading to very high cluster formation potentials. FA and NA was previously shown to bind relatively weakly to iodine species compared to e.g. SA, and therefore we believe that the high nucleation rates for the "oxyacid + mix" is due to these additional nucleation precursors pushing them towards stable sizes. This is mainly caused by their large number concentrations, but these clusters are likely to evaporate due to the low binding strength of NA and FA. Therefore, it can be regarded as a simulation artifact.