228 
c 
“ -rj CJ 
^ c .'c 
.S 3 
"o ’£ 
O . tL 
"XT) » ti -C 
1- »-. 
&■ 0 
-G 
|l>2 I’fl £ 
> T. CO 
2 > C -* -5 X5 
•S 5 — x: * C 
41 C 
A° 
« 
T5 .2 
.£ 
« •- 
.. 0 
“ Ui O « 
'o'*— £ ; 
c’c 
vC O 
U £ 
3 C 
- re P e »£ 
• W. *• 2 -t*’ 
«*« « **> M O 
5 re’ jo'" 0 
^•T3 'O uT . £ 
n 
3 
c 
£ 
E 1 
15 T3 ’■ 
0 
^ u ” 
1 s 
> ^ > ~E c 
! o .n o -o .S o 
: ~ 00 •“ e.^ £ 
a 
O 
£ s' 
£ § 
fs •? 
re £ 
■S.’S 
• S c- 
•s 0 : 
O «~ ;• 
* o , 
2 J= *3 
“ p c 
0 2 0 
o-S £ 
£ 
s t/ 
- c 
" i 
u r 
>.X 
re re 
XX 
>Sx 
143 Eg 
= 0.2 
— ; 
.5 £ 2 
x F- n 
■"■X 
"to, 
£ 
£ 
CJ 
cj o 
< = 
05 
•a 
J 
fc 4 
H 
5 
z 
0 
u 
ctf 
Ul 
2 
Failed to 
shew 
infection 
rl 
- 
1 
1 
1 
- 
- 
SB 
U 
O 
X 
0 
* 
< 
O 
V, 
• 
Average 
8- 
VC 
•+ 
N 
00 
VO 
rl 
K 
ro 
: t- 
e*'. 
M 
rl 
CJ 
es 
M 
Q 
Q 
M 
> 
*-* 
£ 
w« 
0 
j3 
8 
N 
N 
M 
O 
N 
0 
N 
■t 
N 
e 
■5 
« C 
c c 
5*1 
D 
Q 
c/5 
Q 
Z 
< 
> 
x 
< 
O 
2 
M 
Ph 
Longest 
"I" 
ri2 
(Still 
alive) 
VC 
r^> 
00 
ro 
rl 
vC 
•n 
VC 
N 
N 
2 
H 
X 
0 
K 
U 
Q 
C 
c 
5 
UJ 
Average 
•+ 
00 
Tt- 
r^i 
Op 
00 
in 
O 
0 
y. 
p 
w 
< 
UBATION P 
IN DAYS 
Shortest 
■+ 
■+ 
VC 
00 
■+ 
»r. 
00 
c 
'i 
u 0 
0 c 
fc* 
0 
0 
< 
ft. 
u 
z 
»—t 
Longest 
»i*V 
N 
N 
8 
rl 
VO 
»n 
N 
0 
a 
-- * 
1 
05 ; 
ih 
hi 
5 =: 
X’S : 
si 
e 5 > 
t{\ 
cX • 
cfl**, 
IS! 
Elf 
z J1 
- V 
ll 
