Durations of events meeting the above criterion are depicted by SOLID 

 lines and refer to the TOP SCALE of each graph. 



Intervals between events are depicted by DASHED lines and refer to the 

 BOTTOM SCALE of each graph. 



JANUARY 



FEBRUARY 



MARCH 



APRIL 



MAY 



JUNE 



JULY 



AUGUST 



INSUFFICIENT 

 DATA 



INSUFFICIENT 

 DATA 



INSUFFICIENT 

 DATA 



SEPTEMBER 



OCTOBER 



NOVEMBER 



DECEMBER 



INSUFFICIENT 

 DATA 



Figure 43. Monthly persistence graphs giving the cumulative percent frequency of hours of duration of a 

 > 5-meter wave event and of days interval between events for OWS N, (Reproduced from Naval Weather 

 Service, Ref. 27). 



76 



