• ;;**'*** 
T ' 
7 
n 
p 
I 85 
P 
P 
□ 
rzr 
x 5 o 
F I G 
3 3 
T" ■ 
5F 
Er"T~ 
s 
- so *- 
— - 3 o 
30 
--Y-— 
Sl 
V77?77:?7/???y/;/SS//////X4. 
S 
•" 
:s 
i 
s: 
i 
40 
Eid 
°3‘ 
S 
s 
1 
s. 
50 
X70 
1 
fc'3 
40 
i. 
:: 
1 
50 
40 
10 -—f 
-y 
W 
-X 5 0 
% aSSSSasasaSS*^^ 
F I G . ä 3 A 
L \ " / \ 
F I 
3 3 £ 
7 ii):