Fig. 12.

(a) Average aerosol levels in the premise follow the theoretical predictions of Eq. (2). (b) Average exposure increases linearly in time following rather well the theory. Intermittent coughs expose certain individuals. (c-d) Even in asymptomatic cases, aerosol exposure of $\sim 5$ per hour is possible for large $N/A$. Under the presence of symptomatic individuals, all crowd densities pose an increased risk.