采样次数

a1

a2

a3

b1

b2

b3

c1

c2

c3

均值

1

30.7

31.6

29.8

33.4

35.2

32.4

34.5

36.7

32.6

33.0

2

34.5

32.7

35.1

36.9

35.3

33.4

35.6

37.6

34.2

35.0

3

31.5

34.7

32.3

32.4

35.9

33.4

34.9

35.7

34.7

33.9

4

31.2

29.5

30

30.7

31.8

27.3

29.8

32.4

30.6

30.4