Harry 12Z temperature 1987 -8.3 -18.1 -36.5 -38.0 -38.1 -31.5 -34.8 -40.4 -39.5 -29.6 -23.2 -8.5 1988 -8.8 -19.8 -33.0 -34.6 -34.0 -35.5 -36.7 -30.7 -37.1 -28.6 -19.2 -8.5 1989 -9.0 -21.5 -28.4 -27.3 -39.7 -47.6 - - - - - - 1990 - - - - - - - - - - - - 1991 - -15.6 -32.6 -33.4 -35.7 -33.8 -41.3 -42.2 -34.5 -28.7 -18.6 -7.4 1992 -8.0 -19.4 -20.7 -37.8 -34.5 -36.5 -33.9 -44.7 - - -19.2 -9.3 1993 -9.3 -19.0 -30.4 -35.2 -40.5 -31.6 -35.1 -42.7 - - -20.0 -11.9 1994 -12.0 -23.0 -33.3 -30.1 -42.4 -39.8 -35.1 - - - - -9.2 1995 -12.2 -15.9 -26.3 -28.5 -31.3 -24.1 -31.6 -31.1 -29.1 -26.1 -18.7 -11.1 1996 -11.0 -18.2 -26.1 -19.2 - -26.3 - -34.3 -38.2 - -15.6 - 1997 -10.0 -18.8 -31.9 -41.6 -35.2 -32.9 -40.1 -45.0 -38.0 -25.2 -14.4 -9.1 1998 -9.9 -15.8 -29.9 -41.8 -33.7 -31.2 -43.9 -39.9 -43.5 -31.9 -21.5 -10.8 1999 - -20.4 -24.5 -31.5 -29.9 -30.5 -28.0 -33.3 -26.4 -22.0 -16.2 -12.9 2000 -15.3 -17.9 -21.3 -29.0 -29.4 -27.0 -27.2 -30.1 -29.9 -23.8 -16.2 -14.9 2001 -15.0 -16.1 -26.1 -25.2 -27.2 -25.7 -28.9 -37.9 -30.5 -28.3 -19.3 -13.3 2002 -12.6 -17.8 -22.1 -27.7 -25.6 -32.0 -33.1 -33.6 -21.7 -25.0 -15.7 -13.3 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - -