Frequency class

Zone II

Zone IV

Zone V

Class

Frequency (%)

Species number

I

1 - 20

75

498

0

II

21 - 40

4

78

0

III

41 - 60

7

0

13

IV

61 - 80

0

0

0

V

81 - 100

1

0

30

Total of effectifs

87

576

43