40 r 



o 

 o^ 30 



>- 



< 



< 



LxJ 



NEWPORT, RI 



20 



10 



PORTLAND, 

 ME 



PORTSMOUTH, 

 NH 



SOLOMONS 

 MO 







1 



EUGENE I, 

 LA 



i L_ 



-5 5 10 15 20 25 30 



MONTHLY MEAN TEMPERATURE, °C 



Figure 5. Variation in mean monthly salinity and temperature in the 

 surface waters at nine estuarine sampling stations along the Atlantic 

 and gulf coasts of the United States (U.S. Department of Commerce I960) 

 Length of record varies. 



41 



