94 
RADIATION. 
Mean Max. 
in Sun. 
Max. in Sun 
less Max. in 
Shade. 
Max. in Sun 
Ther. in 
vacuo. 
Min. on 
Grass. 
January 
99*5 
26-1 
129-4 
44-1 
February 
106-7 
31-4 
137-1 
50-2 
March 
118-8 
39-7 
146-8 
49-5 
April 
116-3 
37-9 
151-0 
52-3 
May 
117-9 
41-5 
143-7 
54-3 
June 
93-1 
25-1 
116-6 
59-6 
July 
98-4 
30-5 
126-1 
57-4 
August 
109-6 
38-0 
134-2 
58-2 
September 
113-7 
40-7 
140-1 
54-7 
October 
1060 
35-5 
56-5 
November 
115-5 
41-0 
53-9 
December 
116-2 
42-1 
52-4 
RAIN, CLOUDS, AND OZONE. 
EAIK. 
CLOUDS. 
OZONE. 
Amount 
No. 
of 
Days, 
Greatest 
Fall in 
24 hours. 
lO-.SO 
a.m. 
6-0 
p.m. 
Mean 
Least 
Daily 
Amount 
Greatest 
Daily 
Amount 
January 
0-40 
3 
0-17 
3-4 
4-1 
7-1 
3 
9 
February 
5-60 
10 
1-47 
4‘7 
6-3 
7-4 
5 
9 
March 
3-47 
8 
1-17 
1-9 
4-6 
6-6 
3 
9 
April 
8-61 
13 
1-55 
3-7 
6-7 
6-2 
5 
9 
May 
11-89 
22 
2-45 
4-0 
8-4 
6-4 
4 
9 
June 
26-98 
30 
2-65 
9-0 
9-9 
6-5 
5 
8 
July 
19-59 
26 
2-55 
8-7 
8-8 
5-8 
3 
9 
August 
12-89 
26 
1-31 
5-5 
8-6 
5-3 
3 
9 
September 
11-40 
15 
3-13 
5-1 
7:7 
4-9 
2 
8 
October 
10-24 
25 
1-26 
7-9 
8-9 
5-6 
3 
9 
November 
5-90 
16 
1-62 
6-2 
7-2 
5-6 
3 
9 
December 
6-43 
16 
2-75 
5-3 
7-1 
5-7 
4 
8 
123-40 
210 
5-4 
7-4 
6-2 
The warmest month was April, and the coldest July, hut 
the difference of mean temperature was only 4*5 degrees* 
The greatest mean daily range was 23*0 degrees in March, 
and the least 6*6 degrees in June. The mean humidity of 
the air, at 10.30 a.m., was greatest in June, and least in 
March; at 6 p.m. it was also greatest in June, but least in 
