40-, 



20- 



0- 

 40 



20- 









&? 



40 



to 





o 





c 



CI) 



20 



l_ 





L_ 





-j 





O 





o 



n 



O 





*+- 



40 



O 





>* 





O 





CD 



20 



n 





CT 





CI) 





it 







Jan 

 Feb 



en 



Mar 



uz 



Apr 







V\ 



7 



v\ 



_„ a 000a 



n 





V\ 



y AUZJ 



40-i 



20- 



May 



J cz=iC20 



40-, 



Jul 



F 7 ] 



Q00HHH000 



Aug 



=,□ 



^HqH 



Sep 



czi 



Oct 



□ 



Nov 



20- 



Jun 



■& 



y xM 



v\ 



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



Dec 



00 





v\ 



vvm 



V\mY\ 



0000 



v\ 



mmww ft 



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



Period, sec 



Period, sec 



Figure D7 . 1980-1991 monthly wave period distributions 

 for Gage 625 



D20 



