Day | Jan. | Feb. | Mar. | Apr. | May | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec. |
1 | 2 | 2.6 | 2.9 | 5 | 2.9 | 2.6 | 6.6 | 5.6 | 5.8 | 4.6 | 5.7 | 3.8 |
2 | 1.7 | 3.6 | 2.1 | 3.2 | 2.9 | 4.5 | 7 | 5.2 | 6.4 | 4.2 | 3.1 | 2.6 |
3 | 1.6 | 1.2 | 2.7 | 4.4 | 3.4 | 4.4 | 6.3 | 5.4 | 6 | 4.3 | 3 | 2.8 |
4 | 3.7 | 1.5 | 3.1 | 4.2 | 4 | 5.6 | 5.4 | 5.4 | 5.8 | 4.2 | 3.3 | 3 |
5 | 3.6 | 3.6 | 2.9 | 2.4 | 4.2 | 5.5 | 7.4 | 6.7 | 5.8 | 4.1 | 3.7 | 2.8 |
6 | 1 | 3.4 | 4.7 | 2.5 | 6.9 | 5.3 | 8.6 | 6.3 | 6.3 | 4.2 | 3.1 | 2.6 |
7 | 1.3 | 3.2 | 4.3 | 3.8 | 5.7 | 5.4 | 6.8 | 6.2 | 5.9 | 4.3 | 3 | 2.9 |
8 | 1.4 | 5.2 | 4.4 | 4.2 | 3.9 | 5 | 7.2 | 5.8 | 6 | 4.7 | 4.1 | 3.1 |
9 | 1.9 | 2.8 | 2.8 | 4 | 4.9 | 5.4 | 6 | 6.1 | 5.6 | 6 | 3.3 | 2.8 |
10 | 2.8 | 3.1 | 2.5 | 3.3 | 5.1 | 5.6 | 6.3 | 5 | 5.3 | 4.8 | 2.4 | 4 |
11 | 2.7 | 2 | 4.6 | 4.1 | 5.5 | 5.2 | 6.9 | 5.6 | 6 | 4 | 4.5 | 2.4 |
12 | 3.1 | 3.4 | 3.8 | 5.3 | 4.2 | 5.7 | 7.2 | 6.5 | 5.8 | 4.8 | 3.3 | 3 |
13 | 1.6 | 4.3 | 2.3 | 5.4 | 4.8 | 5.6 | 5.2 | 7.2 | 3.8 | 5.3 | 3.1 | 3 |
14 | 1.5 | 2.9 | 3 | 4.6 | 5 | 5.5 | 6 | 6.1 | 6.2 | 4.5 | 3 | 3 |
15 | 2 | 2.7 | 3.4 | 5.1 | 3.9 | 5.6 | 6.1 | 6.3 | 5.2 | 4.2 | 2.9 | 1.8 |
16 | 3.6 | 4.4 | 3.7 | 2.9 | 5.1 | 5.9 | 5.4 | 5.9 | 5.4 | 4.6 | 3.3 | 2.4 |
17 | 3 | 3.1 | 5 | 3.2 | 5.1 | 6.3 | 6.2 | 5 | 5 | 4.2 | 2.4 | 2.6 |
18 | 1.5 | 4.8 | 4.7 | 3.2 | 5 | 5.7 | 6.2 | 5.5 | 4.3 | 4.4 | 4.1 | 2.6 |
19 | 2.6 | 1.9 | 4.4 | 3.1 | 4.8 | 6.5 | 5.1 | 6.4 | 6 | 5.2 | 4 | 2.6 |
20 | 3.8 | 2.7 | 4 | 3.9 | 5.1 | 5.4 | 6.6 | 6.2 | 5.7 | 3.8 | 3 | 2.6 |
21 | 2.9 | 2 | 3.6 | 4.4 | 5.2 | 5.4 | 5.8 | 5.7 | 5.3 | 4.3 | 3.7 | 2.5 |
22 | 2.7 | 2.1 | 4.1 | 5.2 | 4.7 | 5 | 6.4 | 5.7 | 6.7 | 4.6 | 4.3 | 1.7 |
23 | 2.4 | 3.9 | 4.3 | 5.2 | 4.2 | 6.1 | 6.1 | 5.9 | 7.3 | 3 | 4.6 | 1.9 |
24 | 3.1 | 3.9 | 4 | 4 | 3.7 | 5.9 | 6.2 | 6 | 6.2 | 4 | 5.7 | 2.8 |
25 | 4.1 | 1.3 | 3.2 | 4.4 | 5.7 | 6.6 | 6.8 | 6.2 | 5.9 | 4.9 | 5.2 | 2.6 |
26 | 3.4 | 2.7 | 2.8 | 4.1 | 5.4 | 6.4 | 6.2 | 6.9 | 5.5 | 4.2 | 3.2 | 2.5 |
27 | 3.3 | 3.8 | 3 | 4.1 | 5.5 | 5.9 | 6.1 | 6.7 | 5.8 | 5.9 | 3.7 | 2.4 |
28 | 2.8 | 3.4 | 3.5 | 6.9 | 5 | 6.2 | 7.1 | 5.4 | 6.2 | 4.3 | 3.8 | 2.8 |
29 | 3.4 | 5.3 | 6 | 7 | 5.7 | 6.4 | 5.9 | 6 | 3.8 | 2.2 | 2.1 | |
30 | 2 | 4.7 | 4.8 | 5 | 5.3 | 5.8 | 5.5 | 4.4 | 3.7 | 2.8 | 1.8 | |
31 | 3 | 4.9 | 4.8 | 6.4 | 6.8 | 5 | 1.5 | |||||
Av. | 2.6 | 3.1 | 3.7 | 4.2 | 4.8 | 5.5 | 6.4 | 6 | 5.7 | 4.5 | 3.6 | 2.6 |