Table 2. The aerosol particle concentration and volumetric flow rate at the outlets of different musical instruments.

Instrument	Concentration	Volumetric flow rate	Bell radius
	(particles/liter)	(liter/min)	(m)
Tuba	18	101	0.25
Bassoon	40	42	0.02
Flute	45	11	0.01
Flautist	45	26	0.005
French horn	90	36	0.15
Clarinet	200	20	0.03
Trombone	300	47	0.11
Oboe	400	9	0.025
Trumpet	2500	28	0.06