11-16 



COEFFICIENT 



OF VARIATION 



(per cent ) 



Vc^Lg 



• • • 



frequency; 24KC 



PROJECTOR DEPTH: 150 FT MINIMUM 



2 50 500 



RANGE (yd) 



2500 4000 



FIGURE II-6 COEFFICIENT OF VARIATION AS A FUNCTION OF RANGE 



RELATIVE 

 STANDARD 

 DEVIATION 

 ( per cent) 



700 900 



RANGE (yd) 



1300 1500 



FIGURE II-7 FLUCTUATION MEASUREMENTS MADE BY ORL 



S-7001-0307 



