Lettau 00Z temperature 1986 - -14.6 -26.8 -31.5 -25.8 -34.5 -39.2 -43.7 -46.3 -29.1 -14.0 -6.4 1987 -5.1 -16.2 -32.5 -37.3 -35.4 -31.3 -33.3 -39.6 -36.8 -24.8 -17.8 -4.5 1988 -6.2 -15.9 -30.9 -31.6 -32.6 -34.8 -35.7 -26.4 -34.4 -21.2 -14.2 -5.8 1989 -5.6 -17.4 -26.1 -27.1 -35.0 -46.4 -36.8 -40.5 -34.4 -24.8 -13.1 -4.7 1990 -6.1 -16.6 -28.0 -31.3 -35.7 -35.0 -40.0 -39.5 -40.2 -27.2 -14.7 -4.4 1991 -6.7 -11.9 -28.9 -29.3 -33.3 -31.1 - - - - -13.3 -4.1 1992 -5.1 -15.9 -20.4 -37.9 -31.0 -35.3 - - - - -14.2 -5.0 1993 -5.7 -14.2 -28.4 -32.5 -40.5 -33.1 - - - - -14.6 -8.3 1994 -7.2 -16.5 -31.5 -26.6 -42.7 -35.5 -34.1 -42.2 -44.8 -23.0 -12.7 -4.6 1995 -6.5 -14.3 -28.1 -36.8 -40.9 -30.4 - - - - -12.8 -4.2 1996 -5.4 - - - - - - - - - - -4.2 1997 - - - - - - - - - -21.1 - - 1998 - - -27.5 -39.9 -34.0 - - - - - - - 1999 - -16.7 -31.1 -40.0 -38.3 -38.8 -31.6 -41.8 -27.6 -24.2 - - 2000 - - -22.6 -30.4 -33.9 -35.9 -32.5 -35.4 -35.1 -27.0 - - 2001 - - -28.4 -30.0 -37.1 -30.9 -30.2 -47.1 -33.3 -25.4 - - 2002 - - -21.1 -33.4 -26.9 -42.1 -43.3 -41.5 -30.2 -23.9 - - 2003 - - - - - -31.7 - - - - - - 2004 - - - - - - - - - - - - 2005 - - - -37.3 -29.2 -34.1 -30.2 -39.2 - -23.6 - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - -