O 



C 

 a 



o 

 o 

 O 



40-i 



20- 



J 

 40-i 



20- 



0- 1 

 40-1 



20- 



0- 1 

 40-i 



Jan 



eJIBHH 



Feb 



C2 



[J 



Mar 



_ = Q 



>> 



o 



c 



cr 



o 



20- 



J 

 40-, 



20-1 



J 

 40-i 



20- 



Apr 



Q 



May 



_ m Q 



Jun 



n 



LA C2 



Jul 



I —L^Q 



tzlQ 



QED 



Aug 



V\ 



Q[Z3_J _ 



IS 



□0 



xz\ 



Sep 



.=,01008 



Oct 



Nov 





□ 



I 



all 



EZ3 



V~l 



W4 



m 



V\ 



vy 



Dec 



^ 



n 



pi 



p?™^ 



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

 Period, sec 



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

 Period, sec 



Figure B7 . 1980-1989 monthly wave period distributions 

 for Gage 630 



B20 



