FISHERY BULLETIN: VOL. 80, NO. 4 



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YEARS 



Figure 2.— Newport River estuary (Pivers Island) weekly mean water temperatures. Fitted line represents the least squares 



/2ttW\ / 2nW\ 



determined equation: Th = a + b\ sin I I + o 2 cos I J, where Tie is the mean weekly temperature for week W, 



a = 17.88, 61 = -5.20, and 6 2 = -7.94 (R 2 = 0.93). 

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