fe) fe) 
YD 
SS 
9 500 500 
= 
I 
Ww 
= 
Sra 
~ 110 110 
KR PER. 
c “ECHO SEQUENCES 
FROM INDIVIDUALS Re 
a 120 = iad i: U 120 
130 5 130 
140 A 140 
Figure 9 
ECHO SEQUENCES 
FROM INDIVIDUALS - 
IN YARDS 
RANGE IN YARDS 
3 
Oo 
T 
RANGE 
400k 
Figure 10 
262 
