As already noted, neither residual nitrates, nor γ-AlOOH (boehmite) or γ-Al2O3 were observed. Amorphous gels form as a result of short reaction times typical for PAAD, assumedly before the crystallization of δ-Al2O3 (therefore, they are denoted underreacted). The individual reaction of each precursor droplet varies in space and time, affected through a multitude of parameters -from the shape and temperature distribution of the plasma torch to the spatial distribution of droplet injection resulting from the spray parameters. For example, the temperature gradient in a microwave plasma can reach thousands Kelvins from the torch center to its edge . As a result, the output material is a heteroaggregate, being composed of a mixture of multiple phases of alumina. The purpose of the present ML model is to harness this multivariate problem towards an improved understanding of parameter resilience (asking which of the experimentally accessible parameters must be carefully controlled, and for which there is more freedom when aiming to achieve a certain heteroaggregate composition).