Figure 2. Left: Average abolute r₀ = rank(i₀) as a function of the total epidemic size N_IR = |I| + |R| in the network of face-to-face contacts in a high school for different values of the threshold θ_int.

Each curve is an average over M = 1000 (θ_int = 250) or M = 300 (θ_int = 245) random instances. Lines are guide to the eye. Right: probability distribution of ranki₀ over same epidemics for the three set of parameters.