Evaporation of Water in Inland South Africa. 
291 
EVAPORATION' UNION OBSERVATORY -JOHANNESBURQ. 
LAT 26" II' 5., LONG ?8M 5.E. ALT 5924 TT. 
OBSERVATIONS FOR 1915. 
1915 
EVAPORATION 
INCHES. 
WIN D 
MILES 
PER DIEM. 
MEAN 
TEMPERATURE 
OfCREES. r 
MEAN DAILY 
RELATIVE 
HUMIDITY 
MEAN OAUY 
DEFlClEMCX 
eF f\CLATlVt 
Hvmioity. 
100 -H. 
MFAN MONTHLY 
tV^90F^AT10N 
iM imch.es per 
\°fo DEFICIEMCY 
OF RELATIVE 
MUMiO< TY. 
MEAN DAILY 
tVAPOR ATION 
IM INCHES pta 
X'ia Deficiency 
OF RELATIVE 
HUMIDITY. 
JAN. 
Z<>8 8 
66-7 
84-0 
\60 
•2797SO 
•0089919 
FEB. 
4--20 
223Z 
67-0 
69-4 
30 6 
•1372 55 
•0049020 
MAR 
5-27 
6S G 
60-1 
39-9 
•132 08O 
•ocjzfeoe 
APR. 
5 07 
273-6 
ei 0 
51- 3 
48-7 
104 107 
•003.^702. 
MAY. 
3-27 
297 6 
53 & 
59 2 
40-8 
080147 
•002 5854 
JUN 
3 oe» 
252 0 
504 
49 6 
5>-^ 
■059 533 
oco 844 
JUL 
1 82 
Z78^ 
48 0 
e6 1 
33 9 
053687 
00(7316 
AUC 
3-83. 
2e^ 0 
54-8 
48 3 
51-7 
•074 081 
•0023897 
SEP 
S-50 
336 0 
58 0 
51 0 
^•0 
■112 245 
0037415. 
OCT 
6-91. 
336 0 
61 2 
53-^ 
46 6 
•148283 
•oo^sss 
NOV. 
5-80 
280-8 
63 6 
61-5 
38 5 
•/SO 64 9 
•O05o2)6 
DEC 
30O-O 
64 5 
672 
32-8 
•195427 
•006304I 
MEAN. 
277^ 
55 53 
60O 
^00 
O038O82 
TOTAL. 
55 €>0 
1-39000 
Table 10. 
EVAPORATION- UNION OBSERVATORY JOHANNESBURG. 
LAT. 26"ir.5. L0N6.28M-5.E,ALT. 5924 Pt 
OBSEIRVATIOMS FOR 1916. 
EVAPORATIOM 
INCHES. 
Wind 
MEAN 
MILC5 peroleM 
MEAM 
TEMPERATURE 
r*l ax + r»>ir» 
2 _ 
Degrees- r 
MEAD DAILY 
RELATIVE 
HUMIDITY- 
MEAN DAILY 
DEnc\EncY or 
relative 
Humidity 
loo- H. 
MEAN MONTHLY 
EVAPORATION 
irt INCHES PER 
1% OtfiOEHCY or 
ffELA.T^VE 
HUMIOITY. 
MEAM DAILY 
Evaporation 
IN IMCHtS PER 
I^DEFlClCflCY of 
RELAT IV fc. 
HUMIDITY 
JAN 
5' 85 
2 68 8 
66^l 
64-6 
35-4 
Vfc52S4 
0053308 
FEB. 
6 31 
261-6 
67-5 
597 
40 3 
I5«>5-7S 
■ 005"i99l 
MAR. 
3 96 
242-4 
63 5 
700 
30- 0 
132 000 
• OOA7S80 
APR. 
■4 IC> 
244-8 
60 9 
55-0 
45 0 
•092 444 
ooso«|i^ 
MAY 
3 97 
280-8 
52 7 
47- O 
530 
■074 906 
O024 Ife3 
JUN. 
3 89 
283 2 
531 
37-4 
62^ 
062 140 
ooaoT/5 
JUL. 
4 OO 
2S0 8 
52 3 
43 5 
56 5 
0'7O 796 
•002J 8S7 
Aug. 
516 
321-6 
52 6 
37 8 
622 
082 958 
0O26 76O 
SEP. 
328 8 
60 5 
31-8 
682 
0962^0 
•00327*6 
OCT. 
6 18 
292 8 
663 
47 O 
53 O 
ll«»604 
003 76 ;4 
NOV. 
6 16 
280 8 
63 6 
61 S 
38 5 
■I6O00O 
0^753351 
DEC. 
5 42 
2688 
€38 
750 
250 
216900 
MEAN- 
279-6 
60-24 
52 S5 
47 47 
0035 
TOTAL. 
6\76 
\10\0ZZ 
Table 11. 
23 
