Table 1 Date and station based distribution of the percentages of infected individuals to the non-infected individuals. Mean values of ten replicates of 1 cm³ from each station. (% ± st. dev.)

5.6 ± 1.63

4 ± 1.07

5.6 ± 2.87

5.1 ± 0.92

4.5 ± 2.08

2.5 ± 0.44

5.3 ± 1.70

4.1 ± 1.44

7.2 ± 1.39

5.3 ± 2.21

7.5 ± 1.77

6.7 ± 1.19

10.9 ± 1.42

7.5 ± 3.21

10.2 ± 1.65

9.5 ± 1.79

7.9 ± 1.29

2.7 ± 1.23

9.9 ± 3.46

6.8 ± 3.71

4.5 ± 0.74

1.8 ± 1.08

5.5 ± 1.70

3.9 ± 1.91

10.7 ± 3.94

7.3 ± 2.07

10.8 ± 2.01

9.6 ± 1.99

2.1 ± 0.82

1.3 ± 5.35

2.5 ± 1.15

2.0 ± 0.61

5.1 ± 2.75

2.8 ± 0.51

8.2 ± 1.93

5.4 ± 2.71

5.6 ± 0.63

4.8 ± 2.86

10.4 ± 4.37

6.9 ± 3.03

5.8 ± 1.82

3.5 ± 3.01

5.2 ± 3.44

4.8 ± 1.19

5.9 ± 1.80

4.1 ± 2.44

8.1 ± 3.22

6.0 ± 2.00

14.3 ± 2.59

2.1 ± 0.99

11.8 ± 1.77

9.4 ± 6.44

12.1 ± 3.96

4.3 ± 2.37

12.9 ± 2.98

9.8 ± 4.73

7.5 ± 3.54

2.5 ± 2.66

10 ± 2.49

6.7 ± 3.82