FIGURE 



SECTION 





C-7 



G-1 



SHALLOW 



C-8 



D-2 



DEEP 



C-9 



H-1 



SHALLOW 



C-10 



E-2 



DEEP 



C-11 



F-1 



SHALLOW 



C-12 



F-2 



DEEP 



^ 10 



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



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

 FREQUENCY, CPM 



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



48 



