FIGURE 



SECTION 





C-25 



M-1 



SHALLOW 



C-26 



IVI-2 



DEEP 



C-27 



N-1 



SHALLOW 



C-28 



N-2 



DEEP 



C-29 



0-1 



SHALLOW 



C-30 



0-2 



DEEP 





FIG. c-25. 



10^ 





10* 



\ 



10^ 





10^ 







10 



^^ 



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



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

 FREQUENCY, CPM 



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



51 



