Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
G | 4.6 | 5.6 | 6.5 | 7.3 | 7.4 | 8.0 | 7.8 | 7.4 | 6.6 | 5.7 | 4.8 | 4.3 |