min Oct | max Oct | min Nov | max Nov | min Dec | max Dec | |
1948-58 | 46 | 50 | 50 | 55 | 49 | 52 |
1958-68 | 44 | 50 | 48 | 58 | 48 | 52 |
1968-78 | 44 | 51 | 49 | 53 | 46 | 52 |
1978-88 | 43 | 51 | 48 | 56 | 48 | 55 |
1988-98 | 45 | 51 | 48 | 55 | 48 | 60 |
1998-2008 | 42 | 51 | 50 | 58 | 46 | 68 |
2008-2014 | 44 | 48 | 55 | 55 | 52 | 52 |