FIGURE 



SECTION 





C-19 



J-1 



SHALLOW 



C-20 



J-2 



DEEP 



C-21 



K-1 



SHALLOW 



C-22 



K-2 



DEEP 



C-23 



L-1 



SHALLOW 



C-24 



L-2 



DEEP 



.05 .10 .15 .20 .25 .30 .35 



.05 .10 .15 .20 .25 .30 .35 

 FREQUENCY, CPM 



05 .10 .15 .20 .25 .30 .35 



50 



