% BOD

Winter

Spring

% COD

Winter

Spring

First channel

12.34

12.20

First channel

13.53

8.05

Second channel

2.31

9.15

Second channel

2.60

9.52

Third channel

4.42

8.96

Third channel

5.48

1.56

Fourth channel

2.92

1.67

Fourth channel

6.02

5.77

Fifth channel

9.50

8.51

Fifth channel

5.40

8.32

Sixth channel

7.42

6.81

Sixth channel

28.33

7.18

Seventh channel

26.17

32.99

Seventh channel

30.95

38.49

Input-output

74.11

71.69

Input-output

64.90

67.99