Marsh temperature 1969 - - - -3.9 -5.0 -9.5 -6.8 -7.1 -3.3 -4.9 -2.1 0.5 1970 0.7 0.6 -1.0 -3.3 -7.1 -8.1 -3.4 -5.7 -1.3 -1.4 -0.3 0.5 1971 1.6 1.1 0.6 -1.2 -6.6 -2.6 -4.7 -6.1 -4.1 -1.2 0.0 -0.3 1972 1.4 0.9 -0.5 -2.6 -3.1 -7.6 -5.7 -9.7 -4.3 -2.1 -1.0 1.4 1973 0.3 1.3 0.2 -2.4 -5.9 -9.0 -6.8 -5.0 -5.7 -2.1 -0.8 0.7 1974 1.6 2.2 1.2 -3.2 -3.6 -5.3 -4.9 -7.9 -5.1 -1.7 -0.8 1.2 1975 1.3 1.0 0.5 -1.7 -4.6 -7.6 -11.5 -10.6 -4.9 -1.2 -1.2 0.5 1976 1.1 2.0 0.6 -0.4 -2.7 -4.9 -10.2 -8.2 -6.2 -2.6 -0.4 0.1 1977 1.1 1.2 -1.1 -0.1 -3.0 -4.8 -8.5 -8.2 -6.9 -3.3 -0.4 0.3 1978 1.5 1.8 0.5 -0.8 -1.2 -5.0 -11.2 -8.0 -3.4 -2.1 -1.6 0.4 1979 2.2 2.2 1.2 -0.3 -3.0 -5.0 -4.2 -5.7 -3.2 -2.6 -1.4 1.0 1980 1.9 1.4 -0.2 -4.8 -3.0 -6.7 -11.8 -11.3 -7.8 -3.3 -2.5 0.5 1981 1.1 1.8 -0.1 -0.9 -3.7 -4.2 -4.4 -9.5 -5.3 -4.1 -1.4 0.7 1982 2.7 2.2 1.0 -0.2 -0.8 -2.7 -7.0 -5.6 -4.7 -3.2 -1.8 1.2 1983 1.6 1.2 0.6 -0.6 -3.4 -5.1 -5.0 -3.0 -4.2 -2.6 -0.3 0.9 1984 1.2 1.8 1.0 -1.7 -6.2 -4.8 -4.3 -3.8 -1.7 -3.0 -0.4 1.2 1985 2.4 2.0 -0.8 -0.9 -4.0 -4.4 -3.0 -3.7 -1.5 -1.4 0.1 1.1 1986 1.4 1.0 1.2 -1.8 -7.7 -7.2 -7.3 -6.7 -5.8 -2.6 -2.6 -0.1 1987 1.0 1.1 0.3 -2.9 -5.4 -7.6 -13.2 -4.9 -6.6 -2.5 -0.3 -0.8 1988 - 2.3 1.2 - -2.2 -6.9 - - - - - - 1989 - - - - - - -1.0 - - - -0.1 - 1990 - 2.8 - -4.4 - - - - - -2.3 - - 1991 - - -0.1 -2.3 - - - - - - - - 1992 - - - - - - - - - - - - 1993 - - - - - - - - - -2.2 -0.6 0.3 1994 1.7 - - -1.4 - - -10.5 -3.9 - -5.6 -0.4 - 1995 - - - -1.5 - -6.7 -12.3 - - -1.9 -1.4 - 1996 1.3 1.8 0.7 - - - -4.2 -4.7 -2.5 -2.4 -1.2 0.1 1997 1.7 1.5 1.2 -1.7 - - -6.2 - -7.1 -3.4 -2.9 0.1 1998 1.2 1.9 0.7 0.8 -1.6 -1.4 -5.3 -7.0 -8.0 -2.5 -1.0 0.0 1999 1.2 1.1 1.0 0.3 -1.1 -3.8 -3.6 -5.0 -5.6 -2.0 -0.2 0.6 2000 1.3 1.5 0.6 -0.2 - -2.3 -3.1 -6.5 -5.9 -2.3 -1.4 0.0 2001 1.0 0.1 - -3.1 -1.2 -5.0 -6.5 -2.7 -2.6 -0.9 - - 2002 - 2.1 -0.2 - -5.8 -8.7 -6.6 -4.5 -3.3 -5.8 -1.6 0.3 2003 1.5 1.8 -0.4 -0.6 -2.5 -7.3 -5.6 - - -2.5 -2.0 -1.2 2004 1.1 1.4 - - -2.5 -2.8 -3.7 -4.2 -4.3 - - 0.3 2005 1.1 1.9 0.3 -1.2 -3.6 -7.7 -6.0 -4.4 -2.6 -1.5 -0.5 -0.3 2006 - - 2.2 -0.7 - - - -8.2 -4.6 - -0.9 0.6 2007 1.3 1.4 -1.2 -4.2 - - - -5.4 -3.8 -4.1 -2.2 0.0 2008 0.9 1.4 0.2 -2.2 -2.1 -3.7 -3.8 -4.2 -1.7 - -0.6 0.7 2009 1.7 - - - - - - - - - - -