Variables Fcal Fcrit
Surface water temperature
Between stations
Between months
2.71

719.21
2.76

3.74
Surface water salinity
Between stations
Between months
169.15

72.29
2.76

3.74
Surface water pH
Between stations
Between months
10.39

23.61
2.76

3.74
Surface water dissolved oxygen
Between stations
Between months
3.75

9.68
2.76

3.74
Surface water nitrate
Between stations
Between months
56.75

70.48
2.76

3.74
Surface water phosphate
Between stations
Between months
28.34

11.09
2.76

3.74
Surface water silicate
Between stations
Between months
21.57

28.33
2.76

3.74
Table 2: ANOVA: (for physico-chemical parameters).