The results show approximate normal distributions. Moreover, they show that when only a fraction of the nodes are involved in alarm forwarding,the infection rates deeply depend on how these nodes are selected. For instance, if we consider the scenarios in which roughly half of the nodes cooperate for alarm diffusion (300 and 400 active nodes respectively), we have that after 30 min the infection rate varies between 20% and 70% for the smaller area and between 10% and 40% for the larger one.