Table 1 Mean dissolved oxygen, pH and Secchi depth (mean ± standard deviation) averaged on monthly basis

February

Before stocking

5.28 ± 0.22

8.81 ± 0.43

5.25 ± 0.07

7.86 ± 132

8.56 ± 0.39

8.00 ± 1.30

1.21 ± 0.18

1.4 ± 0.17

1.16 ± 0.14

March

After stocking

5.23 ± 0.27

5.21 ± 0.21

7.04 ± 0.77

7.33 ± 0.96

1.40 ± 0.36

1.46 ± 0.36

April

5.22 ± 0.16

6.05 ± 0.68

7.16 ± 0.51

7.39 ± 0.34

1.29 ± 0.19

1.38 ± 0.21

May

7.49 ± 0.90

6.61 ± 0.60

6.25 ± 0.43

6.65 ± 0.30

1.63 ± 0.27

1.67 ± 0.23

June

7.22 ± 0.53

7.17 ± 0.70

7.28 ± 0.54

7.74 ± 0.71

1.53 ± 0.29

1.40 ± 0.37

July

6.80 ± 0.32

6.51 ± 0.17

7.29 ± 0.20

7.51 ± 0.21

1.29 ± 0.27

1.33 ± 0.31

August

7.45 ± 0.62

8.89 ± 0.45

7.18 ± 0.59

6.90 ± 1.14

8.60 ± 0.29

7.05 ± 1.12

1.61 ± 0.40

1.57 ± 0.38

1.76 ± 0.43

Mean

6.57

8.89

6.45

6.99

8.60

7.28

1.46

1.57

1.50