IT 

 IS- 

 IS - 

 14- 

 13- 



la- 

 u- 



10- 

 9- 

 8- 

 7- 

 6 



5- 

 4- 

 3- 

 2 



O MEAN 



+1 STANDARD 

 DEVIATION 



6 



© 



e 



(S 



fl 5 



TIME 



. 1981 



D J-M fl-J J-S 0-0 81 80 



II- 

 10- 



9- 



8- 



7- 



6 



S 



1- 



3 



2-f 



O MEAN 



+ 1 STANDARD 

 DEVIATION 



A 



& 



R S 



TIME 



J-M fl-J J-5 0-D 80-81 



b. 1980 plus 1981 



Figure B33 . Monthly, seasonal, and annual mean and standard 

 deviation of wave period for gage 610 



B119 



