INCHES OF RAINFALL
1
✪
50.
48
46
44
42
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
PLAGUE CASES PER DAY
A
→
to
6
HOURS OF SUNSHINE
1
0
12
11
10
SUNSHINE RAIN AND PLAGUE.--May, 1903.
DATE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20|21|22|23|24|25|26||27|28|29|30|31
12
11
10
DATE
! 2
3 4 5 6 7
8 9 10
12 13 14 15│|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31|
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