| Jan | Feb | March | April | May | June | July | Aug | Sept | Oct | Nov | Dec |
|---|
| 1 | 25.3 | 21.6 | | | | | | | | | | |
|---|
| 2 | 26.5 | 21.8 | | | | | | | | | | |
|---|
| 3 | 27.4 | 21.7 | | | | | | | | | | |
|---|
| 4 | 27.4 | 20.3 | | | | | | | | | | |
|---|
| 5 | 27.6 | 19.1 | | | | | | | | | | |
|---|
| 6 | 26.0 | 18.7 | | | | | | | | | | |
|---|
| 7 | 27.5 | 21.1 | | | | | | | | | | |
|---|
| 8 | 27.1 | 25.1 | | | | | | | | | | |
|---|
| 9 | 21.3 | 26.6 | | | | | | | | | | |
|---|
| 10 | 31.3 | 25.3 | | | | | | | | | | |
|---|
| 11 | 24.5 | 26.5 | | | | | | | | | | |
|---|
| 12 | 24.3 | 22.7 | | | | | | | | | | |
|---|
| 13 | 25.0 | 23.6 | | | | | | | | | | |
|---|
| 14 | 24.4 | 26.8 | | | | | | | | | | |
|---|
| 15 | 24.1 | 24.9 | | | | | | | | | | |
|---|
| 16 | 26.1 | 18.8 | | | | | | | | | | |
|---|
| 17 | 30.3 | 19.1 | | | | | | | | | | |
|---|
| 18 | 26.4 | 19.7 | | | | | | | | | | |
|---|
| 19 | 27.9 | 23.6 | | | | | | | | | | |
|---|
| 20 | 23.4 | 26.6 | | | | | | | | | | |
|---|
| 21 | 24.1 | 32.2 | | | | | | | | | | |
|---|
| 22 | 23.4 | 30.9 | | | | | | | | | | |
|---|
| 23 | 27.1 | 30.5 | | | | | | | | | | |
|---|
| 24 | 30.2 | 28.5 | | | | | | | | | | |
|---|
| 25 | 27.7 | 26.0 | | | | | | | | | | |
|---|
| 26 | 29.4 | 24.6 | | | | | | | | | | |
|---|
| 27 | 34.2 | 25.1 | | | | | | | | | | |
|---|
| 28 | 33.8 | 25.1 | | | | | | | | | | |
|---|
| 29 | 19.8 | | | | | | | | | | | |
|---|
| 30 | 19.3 | | | | | | | | | | | |
|---|
| 31 | 20.4 | | | | | | | | | | | |
|---|
|
