| Jan | Feb | March | April | May | June | July | Aug | Sept | Oct | Nov | Dec |
1 | 14.7 | 7.9 | | | | | | | | | | |
2 | 12.3 | 13.5 | | | | | | | | | | |
3 | 14.7 | 10.7 | | | | | | | | | | |
4 | 39.2 | 10.7 | | | | | | | | | | |
5 | 29.7 | 10.7 | | | | | | | | | | |
6 | 33.7 | 1.2 | | | | | | | | | | |
7 | 30.9 | 3.0 | | | | | | | | | | |
8 | 28.1 | 12.3 | | | | | | | | | | |
9 | 30.9 | 6.7 | | | | | | | | | | |
10 | 21.4 | 10.7 | | | | | | | | | | |
11 | 26.9 | 17.4 | | | | | | | | | | |
12 | 34.8 | | | | | | | | | | | |
13 | 34.8 | | | | | | | | | | | |
14 | 19.0 | | | | | | | | | | | |
15 | 20.2 | | | | | | | | | | | |
16 | 12.3 | | | | | | | | | | | |
17 | 16.2 | | | | | | | | | | | |
18 | 13.5 | | | | | | | | | | | |
19 | 17.4 | | | | | | | | | | | |
20 | 14.7 | | | | | | | | | | | |
21 | 20.2 | | | | | | | | | | | |
22 | 19.0 | | | | | | | | | | | |
23 | 14.7 | | | | | | | | | | | |
24 | 21.4 | | | | | | | | | | | |
25 | 16.2 | | | | | | | | | | | |
26 | 29.7 | | | | | | | | | | | |
27 | 33.7 | | | | | | | | | | | |
28 | 20.2 | | | | | | | | | | | |
29 | 12.3 | | | | | | | | | | | |
30 | 7.9 | | | | | | | | | | | |
31 | 7.9 | | | | | | | | | | | |
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