40- 



20- 



0- 

 40- 



20- 



Jan 



v\ 



71 



\z\ 



Jul 



j& 



i 











^ 



40 



<D 





O 





a) 



20 



L. 





L. 





~i 





U 





u 



n 



o 





4— 



40 



o 





>% 





u 







20 



a 





cr 





C|) 





it 







Feb 



7 tT 



J _ = ra^Ld 



00 a 0_ 



Aug 



I 



Mar 



WMM(Mz&. 



F 7 ] 



Sep 



71 



_„0Q 



121 Q_ 



Apr 



Rl 



40- 



20- 



0- 



40- 



20- 



May 



[ZI 



00000QH0Q 



Oct 



cziQ 



Nov 



11 



0= 



Jun 



^^ 



a 



m 



i« 



p 7 ! 



HX 



^ 



JZL 



Q 



Dec 



-^ 



El 



Rl 



^000 



gW J 



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 D6 . 1991 monthly wave period distributions for Gage 625 



D19 



