Marsh 12Z temperature 1988 - - - - - - - - - -3.4 - - 1989 1.1 - - -4.8 - -2.2 -1.1 - - -0.8 - - 1990 - - - - -5.0 - - - -3.3 -2.4 - - 1991 2.0 - -0.1 -2.2 - - - - - - - - 1992 - - - - - - - - - - - - 1993 - - - - - - - - - -2.0 -0.6 0.2 1994 - - 0.4 -1.6 - -3.9 -9.9 -4.1 -3.5 -6.0 -0.4 - 1995 - - - -1.9 - -6.1 -12.2 -10.5 - -2.0 -1.4 0.3 1996 1.3 - - -1.9 -3.3 -5.1 -4.1 -4.8 -2.5 -2.3 -1.3 - 1997 1.5 1.4 1.0 -2.0 - - - - -7.4 -3.5 - - 1998 1.6 - 0.7 0.9 -1.9 -1.4 -5.2 -7.1 -8.7 -2.4 -1.0 -0.1 1999 1.1 0.9 0.8 0.1 -1.3 -3.9 -3.7 -5.1 -5.8 -2.0 -0.2 0.4 2000 1.3 1.3 0.5 -0.2 - -2.3 -3.3 -6.5 -6.1 -2.4 -1.4 0.1 2001 0.8 0.1 - -3.1 -1.4 -5.5 - -2.5 -2.8 -0.9 - 0.9 2002 - 2.0 -0.2 - -5.8 -9.1 -6.5 -4.5 -3.4 -5.9 -1.7 0.1 2003 1.3 1.7 -0.5 -0.6 -2.9 -7.7 -5.5 - - -2.6 -1.9 -1.2 2004 1.0 1.2 0.4 -2.3 -2.5 -2.8 -3.8 -4.6 -4.1 - - 0.2 2005 1.2 2.0 0.1 -1.4 -3.8 -7.7 -6.1 -4.7 -2.8 -1.4 -0.6 -0.3 2006 - - 1.9 -0.9 - - - -8.4 -4.3 - -0.9 0.6 2007 1.3 1.2 -1.3 - - - -11.8 -5.4 -3.6 -4.3 -1.9 0.1 2008 0.9 1.4 0.3 -2.5 -2.4 -3.9 -3.7 -4.7 -1.8 - -0.6 0.7 2009 1.7 - - - - - - - - - - -