1h 74s 
30’ 
40’ 
ig 
5 4 
aes eens ‘ 
F 235 8 
ye 2's aie Fs : M2 
EDT HB NS 
SRO | = 
<i 
COCOONS : 
SO OF 
CEOCCCECEOOO COON 
OOOO CE 
aestatateeiatsteneoreesks | 
x3 seceatea J 
| E Se 
ener 
2 ee 
E OO 
: “ BO | 
| | KOS 
oe | AE 
|e EEE EE 28 ORR 
aes F : é Ce 
|22 bse S : = 5 rt 
Pet pede cd Be :| 
= ia! i 
Soe oe a S| 
lie |S = ss 
oe ieee Be = Se bs 
“o£ Bly | ec < 2 xe 
: ; \ i w WK LL 
s G7 to YW 
Lb eres | TOMO pl | 
He p23 By oe 
4 age | a 
H | = { ) = 
eee + 
31 
69° 
1953 
23 OCTOBER 
20! 
ICE CONDITIONS, 
40" 
FIGURE 13. 
70° 
