Table 2 Ratios of medians of emission rates for different test and loudness conditions.

From: Aerosol emission in professional singing of classical music

ID

Speaking/breathing

Singing/breathing

Singing/speaking

Forte/piano

Forte/mezzo-forte

S1

7.5

80.0

10.7

0.8

1.3

S2

0.6

36.6

61.0

3.4

1.5

S3

10.0

228.9

22.9

121.0

1.6

S4

27.0

322.9

12.0

44.5

6.4

S5

83.0

329.9

4.0

86.0

6.6

S6

Inf

Inf

99.5

159.0

1.5

S7

Inf

Inf

28.8

114.3

2.5

S8

10.5

62.3

5.9

42.0

6.0

  1. The inf-values indicates a non-defined ratio caused by zero values in breathing in the denominator.