To exclude from our analysis nodes that in the considered time interval are far away from the emergency location
(the furthest are roughly 100 km distant), in the following two figures we limit our attention to the infection rate for the
target areas. With regard to the smaller area (Fig. 5-c), we have that, at the beginning of the alarm spread, the infection rates
Finally, in Fig. 6 we analyze the distribution of the infection rate among the different simulations by means of the
complementary cumulative distribution function (CDF). The complementary CDF for a random variable X denotes the
probability P(X ≥ x). 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.