Month

ppm DO

0 - 20 m

1960

ppm DO

0 - 20 m

1990

ppm DO

40 - 60 m

1960

ppm DO

40 - 60 m

1990

% Saturation

(0 - 20 m)

1960

% Saturation

(0 - 20 m )

1990

9

7.1

8.9

3.48

3.25

96

138

10

7.08

9.52

3.99

1.46

98

146

11

6.94

6.17

3.48

0.52

97

109

12

6.73

7.57

2.91

0.87

96

110

1

6.71

7.6

4.34

2.20

91

112

3

6.81

7.46

6.29

2.21

94

110

4

5.15

6.15

1.79

3.76

94

122

5

6.64

9.63

2.75

6.74

91

143

7

6.59

8.43

6.34

7.72