January | February | March | April | May | June | July | August | September | October | November | December | |
V20 | 5.64 | 6.24 | 4.66 | 6.85 | 5.73 | 6.35 | 6.16 | 6.31 | 6.39 | 5.25 | 5.98 | 5.2 |
V30 | 6.12 | 6.76 | 5.06 | 7.42 | 6.22 | 6.89 | 6.68 | 6.84 | 6.93 | 5.69 | 6.49 | 5.64 |
V40 | 6.48 | 7.16 | 5.36 | 7.86 | 6.58 | 7.3 | 7.07 | 7.24 | 7.34 | 6.03 | 6.87 | 5.98 |