40-i 



20- 



Jan 



q J E=za tzn Q 

 40 



Feb 

 20- 







<D 



O 



£ 20- 



() 





o 



n-J 



u 





4— 



40-i 



o 





^ 



- 



o 





CD 



20- 



75 





tr 



- 



(1) 









Li_ 



o-l 



Mar 



Apr 



a 



E3 



Jul 



Q 



Aug 



a 



Sep 



71 



/ 



VI 



ZJ, [2D 



Y\v\ 



□ ca 



__JaH0M 



Rjfl 



Q 



P^Fl 



El 



fou 



40-i 



20- 





 40-i 



20- 



May 



a 



Jun 



Q 



v\ 



m 



Oct 



. Q 00 



Nov 







n[ZI 



i i r i i 



El 



& 



Dec 



-^ 



I 1 



Y\V7M^YA 



2 3 4 5 6 7 8 9 10 12 14 16 



2 3 4 5 6 7 8 9 10 12 14 16 

 Period, sec 



Period, sec 



Figure B7 . 1980-1988 monthly wave period distributions 

 for Gage 630 



B20 



