456 



BELL SYSTEM TECHNICAL JOURNAL 



<n 



20 

 15 

 10 

 5 







z 



<o 

 -•o -5 

 u 



-10 

 -15 



xioio 



xioio 



-90 -75 -60 -45 -30 -15 15 30 45 60 75 90 



ANGLE OF ROTATION ABOUT X AXIS IN DEGREES (G) 



Fig. 2 — coe', Cm, and dae' as a function of rotation about the X axis. 



