N

Min

Max

Range

Mean

Var

Std

CV(%)

251-10

50

17.96

26.25

8.29

21.79286

3.576547

1.891176

8.677961

251-12

50

16.42

25.14

8.72

21.34167

5.86847

2.422492

11.351

251-14

50

19.99

28.32

8.33

21.32546

5.409554

2.325845

10.8818

251-16

50

16.78

32.51

15.73

21.96936

6.599606

2.56897

11.69342

251-18

50

17.41

32.61

15.2

23.34625

10.45348

3.233184

13.84882