CD 



o 



c 



CD 



o 



o 

 O 



40- 



20- 



J 

 40- 



20- 



0- 

 40-. 



20- 



J 

 40-i 



Jan 



0a 



Feb 



MA 



Mar 



o 



c 



CD 

 CD 



Apr 



20- 



J 

 40 



_m m 000 



May 



20- 



0- 1 

 40-, 



20- 



[ZJLZ 



Ld a [Z] 



0l 



Zl Ld EU 



Jul 



Rl 

 /^[Z 



1 



Aug 



qHHq 



p 



Sep 



,J 



H_B_J aaHaa 



Is 



Oct 



_J 



Nov 



Bn 



tzl 



Jun 



gp M ryi 



T — ^" f I 



kJI2lk2_ 



/ 

 / 

 / 



III 



Dec 



H 



vmMfovM 



i " i — r 



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 B6 . 1987 monthly wave period distributions for Gage 630 



B18 



