

















































































o 





















































































/ 











































/ 









o Fractiles taken from Table 8 



















/ 



/ 





































/ 



? 





































/ 



/ 







































A 







































( 



/ 









































/ 









































/ 



/ 









































/ 







































/ 



/<: 





































/ 



/ 





































/ c 



/ 







































/ 









































/ 









































/ 









































/ 



r 









































/ 









































































































































































0.5 1 2 3 



Variation in Pitch Angle, degrees Double Amplitude 



5 6 7 8 9 10 



Figure 7 - Long-Term Cumulative Distribution of Pitch Angle 

 for Wartime Service, North Atlantic Ocean 



This log-normal distribution is computed on the basis of the data represented by the plotted points and it cor- 

 responds to the following parameters (see Appendix B for calculations). 

 Mean value of log-- (variation in pitch angle) = 0. 1227 

 Standard deviation of log., (variation in pitch angle) = 0.3898 

 It is probably valid up to 25 deg. 



21 



