o 



+1 STANDARD 

 DEVIATION 



1 



1 



J n s N 



Tire 



a. 1981 



J-n fl-J >S 0-0 81 80 



17 



16 



15- 



14- 



13- 



12 



II 



10 

 9- 



O MEAN 



+1 STANDARD 

 DEVIATION 



(S) & 



n 5 



TIflE 



J-M n-J J-S 0-0 80-81 



b. 1980 plus 1981 



Figure B4. Monthly, seasonal, and annual mean and standard 

 deviation of wave period for gage 625 



B9 



