Figure 18 (Continued) 



2.2 



2.0 

 1.8 

 1.6 



1.4 



I 



^^ 1.2 

 1.0 

 0.8 



MEASURED DIRECTLY 

 LINEAR SUPERPOSITION 



45 90 135 180 225 270 315 360 

 (DEG) 



Figure 18c - $,-$^90 degrees 



47 



