min Oct | max Oct | min Nov | max Nov | min Dec | max Dec | |
1948-58 | 24 | 30 | 20 | 27 | 21 | 27 |
1958-68 | 22 | 27 | 22 | 25 | 20 | 25 |
1968-78 | 24 | 27 | 20 | 25 | 20 | 25 |
1978-88 | 22 | 27 | 20 | 25 | 20 | 25 |
1988-98 | 24 | 29 | 19 | 25 | 22 | 25 |
1998-2008 | 24 | 30 | 22 | 25 | 18 | 26 |
2008-2014 | 25 | 29 | 22 | 27 | 22 | 25 |