Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1957 | -7.6(100) | -11.7(100) | -15.4(100) | -19.1(100) | -21.4(100) | -23.4(100) | -27.2(100) | -31.8(100) | -24.3(100) | -22.9(100) | -13.5(100) | -7.1(100) |
1958 | -6.6(100) | -9.9(100) | -17.5(100) | -25.2(100) | -31.2(100) | -23.7(100) | -27.5(100) | -28.7(100) | -24.0(100) | -20.8(100) | -13.5(100) | -10.8(100) |
1959 | -6.1(100) | -10.8(100) | -20.2(100) | -20.9(100) | -17.0(100) | -29.8(100) | -27.4(100) | -27.2(100) | -31.6(100) | -21.2(100) | -14.1(100) | -5.9(100) |
1960 | -6.9(100) | -14.2(100) | -19.1(100) | -18.9(100) | -27.1(100) | -30.3(100) | -24.7(100) | -24.6(100) | -30.1(100) | -20.9(100) | -16.1(100) | -8.2(100) |
1961 | -7.7(100) | -13.9(100) | -16.8(100) | -23.6(100) | -19.2(100) | -32.9(100) | -33.1(100) | -31.6(100) | -28.2(100) | -15.5(100) | -13.8(100) | -7.6(100) |
1962 | -6.5(100) | -14.2(100) | -15.8(100) | -19.4(100) | -27.6(100) | -27.2(100) | -28.5(100) | -31.6(100) | -28.2(100) | -27.2(100) | -17.0(100) | -8.9(100) |
1963 | -6.5(100) | -13.4(100) | -14.4(100) | -21.9(100) | -25.8(100) | -25.0(100) | -25.8(100) | -20.1(100) | -25.6(100) | -23.1(100) | -14.5(100) | -7.4(100) |
1964 | -7.4(100) | -11.6(100) | -17.2(100) | -24.7(100) | -32.3(100) | -22.8(100) | -30.0(100) | -33.2(100) | -33.6(100) | -25.0(100) | -15.7(100) | -8.4(100) |
1965 | -6.1(100) | -11.9(100) | -19.5(100) | -22.9(100) | -27.0(100) | -26.4(100) | -27.7(100) | -30.1(100) | -26.5(100) | -22.6(100) | -14.5(100) | -8.2(100) |
1966 | -7.0(100) | -11.5(100) | -11.4(100) | -16.1(100) | -23.6(100) | -25.3(100) | -27.0(100) | -29.6(100) | -27.8(100) | -21.8(100) | -15.9(100) | -7.2(100) |
1967 | -5.0(100) | -9.9(100) | -22.4(100) | -20.9(100) | -23.8(100) | -30.7(100) | -28.7(100) | -26.6(100) | -28.5(100) | -22.5(100) | -14.5(100) | -6.2(100) |
1968 | -9.5(100) | -12.5(100) | -14.2(100) | -24.4(100) | -22.2(100) | -21.1(100) | -31.8(100) | -29.7(100) | -29.2(100) | -20.4(100) | -13.3(100) | -8.0(100) |
1969 | -6.2(100) | -9.5(100) | -17.6(100) | -14.6(100) | -20.7(100) | -20.9(100) | -30.4(100) | -29.6(100) | -23.2(100) | -15.8(100) | -11.8(100) | -5.7(100) |
1970 | -7.9(100) | -12.6(100) | -20.2(100) | -22.1(100) | -27.0(100) | -29.2(100) | -30.7(100) | -34.3(100) | -16.8(100) | -19.3(100) | -13.3(100) | -5.2(100) |
1971 | -5.2(100) | -10.6(100) | -20.2(100) | -17.4(100) | -25.3(100) | -32.0(100) | -32.3(100) | -25.4(100) | -28.4(100) | -20.0(100) | -15.4(100) | -6.4(100) |
1972 | -6.2(100) | -10.0(100) | -16.5(100) | -20.1(100) | -24.6(100) | -29.1(100) | -32.8(100) | -29.2(100) | -28.3(100) | -25.6(100) | -12.7(100) | -7.4(100) |
1973 | -5.7(100) | -12.5(100) | -18.1(100) | -20.1(100) | -24.5(100) | -31.2(100) | -29.4(100) | -35.9(100) | -27.0(100) | -19.0(100) | -12.3(100) | -8.5(100) |
1974 | -5.5(100) | -14.7(100) | -17.9(100) | -22.1(100) | -21.8(100) | -29.9(100) | -30.8(100) | -21.3(100) | -23.6(100) | -23.6(100) | -13.8(100) | -6.4(100) |
1975 | -5.8(100) | -13.0(100) | -12.8(100) | -20.8(100) | -17.6(100) | -24.9(100) | -24.4(100) | -30.0(100) | -27.0(100) | -16.7(100) | -12.9(100) | -6.5(100) |
1976 | -5.7(100) | -11.0(100) | -20.4(100) | -20.7(100) | -25.0(100) | -24.9(100) | -26.2(100) | -23.8(100) | -22.1(100) | -19.9(100) | -13.5(100) | -6.0(100) |
1977 | -4.9(100) | -11.2(100) | -17.9(100) | -16.4(100) | -16.5(100) | -21.9(100) | -29.8(100) | -25.8(100) | -29.6(100) | -21.1(100) | -13.7(100) | -8.4(100) |
1978 | -6.9(100) | -10.2(100) | -16.9(100) | -15.3(100) | -20.4(100) | -24.6(100) | -28.5(100) | -25.2(100) | -26.9(100) | -19.6(100) | -15.0(100) | -7.6(100) |
1979 | -4.7(100) | -11.2(100) | -19.6(100) | -17.9(100) | -26.1(100) | -24.0(100) | -34.6(100) | -29.8(100) | -26.8(100) | -22.2(100) | -13.9(100) | -5.9(100) |
1980 | -8.7(100) | -10.8(100) | -15.5(100) | -20.7(100) | -27.3(100) | -25.3(100) | -31.7(100) | -27.0(100) | -27.0(100) | -23.8(100) | -10.8(100) | -6.9(100) |
1981 | -5.0(100) | -10.8(100) | -16.6(100) | -17.6(100) | -26.4(100) | -26.0(100) | -23.5(100) | -24.5(100) | -26.9(100) | -20.1(100) | -12.3(100) | -6.0(100) |
1982 | -5.0(100) | -8.9(100) | -23.3(100) | -18.9(100) | -25.6(100) | -26.1(100) | -24.3(100) | -28.8(100) | -21.9(100) | -19.1(100) | -12.8(100) | -5.9(100) |
1983 | -4.1( 32) | - | - | - | - | - | - | - | - | - | - | - |
1984 | - | - | - | - | - | - | - | - | - | - | - | - |
1985 | - | - | - | - | - | - | - | - | - | - | - | - |
1986 | - | - | - | - | - | - | - | - | - | - | - | - |
1987 | - | - | - | - | - | - | - | - | - | - | - | - |
1988 | - | - | - | - | - | - | - | - | - | - | - | - |
1989 | - | - | - | - | - | - | - | - | - | - | - | - |
1990 | - | - | - | - | - | - | - | - | - | - | - | - |
1991 | - | - | - | - | - | - | - | - | - | - | - | - |
1992 | - | - | - | - | - | - | - | - | - | - | - | - |
1993 | - | - | - | - | - | - | - | - | - | - | - | - |
1994 | - | - | - | - | - | - | - | - | - | - | - | - |
1995 | - | - | - | - | - | - | - | - | - | - | - | - |
1996 | - | - | - | - | - | - | - | - | - | - | - | - |
1997 | - | - | - | - | - | - | - | - | - | - | - | - |
1998 | - | - | - | - | - | - | - | - | - | - | - | - |
1999 | - | - | - | - | - | - | - | - | - | - | - | - |
2000 | - | - | - | - | - | - | - | - | - | - | - | - |
2001 | - | - | - | - | - | - | - | - | - | - | - | - |
2002 | - | - | - | - | - | - | - | - | - | - | - | - |
2003 | - | - | - | - | - | - | - | - | - | - | - | - |
2004 | - | - | - | - | - | - | - | - | - | - | - | - |
2005 | - | - | - | - | - | - | - | - | - | - | - | - |
2006 | - | - | - | - | - | - | - | - | - | - | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |
2010 | - | - | - | - | - | - | - | - | - | - | - | - |
2011 | - | - | - | - | - | - | - | - | - | - | - | - |
2012 | - | - | - | - | - | - | - | - | - | - | - | - |
2013 | - | - | - | - | - | - | - | - | - | - | - | - |
2014 | - | - | - | - | - | - | - | - | - | - | - | - |
2015 | - | - | - | - | - | - | - | - | - | - | - | - |
2016 | - | - | - | - | - | - | - | - | - | - | - | - |
2017 | - | - | - | - | - | - | - | - | - | - | - | - |
2018 | - | - | - | - | - | - | - | - | - | - | - | - |
2019 | - | - | - | - | - | - | - | - | - | - | - | - |
2020 | - | - | - | - | - | - | - | - | - | - | - | - |
2021 | - | - | - | - | - | - | - | - | - | - | - | - |
2022 | - | - | - | - | - | - | - | - | - | - | - | - |
2023 | - | - | - | - | - | - | - | - | - | - | - | - |
2024 | - | - | - | - | - | - | - | - | - | - | - | - |