5 -1 



4 - 



MONTHLY 



SEASONAL 



ENVELOPE OF ONE 



STANDARD DEVIATION 



3 - 



2 -i 



1 - 



in 



IX 



WINTER , SPRING , SUMMER , FALL , 



' 1 ! ^ r \ 1 — -^ 1 ■ ^ f ^ 



Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct, Nov. 

 MONTHS 



Figure 8. Monthly average significant wave heights (Hg) compiled 

 from Virginia Beach gage (from Gutman, 1976). 



39 



