Gill 00Z temperature 1985 - -15.8 -26.1 -39.4 - -37.8 -50.7 -42.2 -41.0 -28.2 -16.3 -7.7 1986 -7.2 -15.2 -25.7 -35.1 -27.2 -35.0 -41.5 -47.6 -45.3 -31.0 -14.8 -6.9 1987 -5.8 -14.9 -33.7 -38.2 -39.0 -30.9 -33.8 -40.0 -37.8 -25.2 -18.1 -5.0 1988 -6.4 -15.6 -30.5 -32.8 -32.9 -35.4 -38.1 -30.6 -35.3 -25.5 -15.3 -6.0 1989 -6.2 -17.3 -26.6 -27.9 -38.1 -47.5 - - - - - - 1990 - - - - - - - - - - - - 1991 - -12.0 -29.6 -33.1 -35.3 -32.1 - -41.4 -34.2 -24.1 -13.4 -4.6 1992 -5.0 -14.9 -19.3 -37.7 -32.9 -36.3 -34.9 -43.8 - - -15.0 -6.3 1993 -5.7 -14.5 -29.0 -33.5 -40.5 -32.0 -35.2 -42.5 -39.1 -28.8 -15.6 -7.8 1994 -7.8 -16.7 -31.9 -28.5 -42.0 -40.1 -35.0 - - - -13.5 -4.8 1995 -7.1 -14.3 -27.4 -37.7 -41.0 -34.2 -41.8 - - - - -6.2 1996 -6.1 -15.9 -32.3 -28.1 -38.5 -36.9 -41.7 -33.8 -37.5 -32.0 -14.5 -6.1 1997 -7.3 -15.6 -29.4 -40.5 -35.7 -33.0 -40.9 -45.1 -37.6 -20.9 -11.3 -6.3 1998 -7.9 -12.7 -27.7 -41.8 -34.8 -30.1 -45.0 -39.3 -41.5 -26.7 -17.0 -7.3 1999 -7.5 -16.9 -32.2 -39.8 -42.7 -40.4 -31.7 -43.5 -31.8 -25.9 -13.1 -7.9 2000 -9.1 -16.2 -22.9 -32.7 -35.0 -39.9 -36.9 -38.8 -37.3 -29.2 -12.1 -8.0 2001 -9.9 -15.5 -30.3 -32.5 -39.1 -36.9 -34.8 -48.6 -38.2 -27.0 -16.2 -6.6 2002 -7.1 -15.1 -22.8 -36.2 -31.5 -40.5 -46.6 -43.9 -30.2 -21.5 -13.7 -7.8 2003 - - - - - -34.3 - - - - - - 2004 - - - - - - - - -42.4 - - - 2005 -6.4 -16.8 - -38.1 -34.4 - -34.4 -41.1 - - -15.1 -5.0 2006 -8.0 - - - - - - - - - - - 2007 - - - -33.5 -36.5 -35.7 - -38.0 -33.2 -29.1 -14.1 -5.6 2008 -4.5 -16.7 -26.0 -31.8 -36.6 -32.9 -42.6 -49.8 -34.6 -25.3 - - 2009 - - - - - - - - - - - -