Evolution of the total amount of ice (left panel), H₂O ice (center), and NH₃ (right) averaged over 500 monomers for different home aggregate filling factors. Solid lines indicate the mean of the 500 monomers, whereas dotted lines indicate the standard deviation. The black dots indicate the ice evolution behaviour predicted by ProDiMo for the vFrag5-model. Trajectories of individual monomers are also shown in the background.