TABLE I.

Relevant parameters of the cough-cloud.

	No mask	Surgical mask	N95 mask
Distance (m) (Ref. 13)	1.5–3	0.5–1.5	0.1–0.25
Initial velocity (m/s) (Ref. 13)	3.5–6.5	1.5–2	0.4–0.8
Total time (s) [Eq. (8)]	5.7–9.8	5.7–14.2	4.5–10.0
Entrained volume (l) [Eq. (10)]	22.5–179.8	0.83–22.5	0.007–0.104