Prior studies of respiratory droplet size distributions.

aGeometric mean (GM) and geometric standard deviation (GSD) calculated by methods presented in [51] or cited as reported in the original papers.bWhether droplet sizes were adjusted upward to account for evaporation or were reported as measured.cCalculated from data in Table 3 in [20].dCalculated from data in Table 1 in [15]; droplet diameter upper end assumed to be 2000 µm.eCalculated from data in Table IV in [22].fNo data on GSD reported.gReported modal diameter.hCalculated from data in Table 2 in [19], only results from experiments without food dye were used.iCounting aloud from 1 to 100.