Table 2.

Decay of droplet nuclei concentration for different ventilation rates and duration of time in a room.

Time (min)	Ventilation rate (%)
	6 ACH	12 ACH	18 ACH	24 ACH
0	100	100	100	100
5	60.7	36.8	22.37	13.5
10	36.8	13.5	5.0	1.8
15	22.3	5.00	1.1	0.3
20	13.5	1.8	0.3	0.03
25	8.2	0.7	0.06	0.00
30	5.0	0.3	0.01	0
40	1.8	0.03	0	0
50	0. 7	0	0	0
60	0.3	0	0	0