IV- 34 



FIGURE IV.1.18 SEASONAL VARIATION IN CLIMATE AROUND 

 THE ESTUARINE ZONE 



Eu fle* 



SAN DIEGO 



PORTEND 



PUERTO RICO 8. VIRGIN ISLANDS 



Portland, Maine 



1 3 3 4 5 * 7 S 9 10 II 12 

 MONTH 



3 3 4 5 6 7 • 9 10 II 13 



MONTH 



o ^ T 



1 33456789 10 1112 

 MONTH 



Baltimore, Maryland 



i 2 in 6 m noun 



MONTH 



Z _, , 

 O ** 



n 



12 3 4 5*719 10 II 13 

 MONTH 



