Age class

Minimum

Maximum

Mean ± SE

Std. Dev.

CV (%)

Skewness ± SE

Kurtosis ± SE

Young (3 - 8 years) (n = 124)

0.00

20.00

6.91 ± 0.41

4,51

65,27

0.73 ± 0.21

0.12 ± 0.43

Prime (9 - 18 years) (n = 119)

3.00

21.20

11.52 ± 0.29

3,25

28,21

0.26 ± 0.22

0.26 ± 0.44

Ageing (19 - 23 years) (n = 38)

2.30

14.45

8.67 ± 0.53

3,26

37.60

−0.24 ± 0.38

−1.01 ± 0.75

Old (>23 years) (n = 117)

0.00

16.30

4.66 ± 0.28

3,05

65.45

1.42 ± 0.22

2.93 ± 0.44