Byrd 00Z temperature 1980 - - -24.0 -22.0 -26.6 -35.2 -25.4 -27.7 -33.8 -25.7 -19.9 -13.2 1981 - -20.7 -23.2 -31.4 -32.4 -30.3 -35.7 -41.4 -34.9 -26.9 -20.5 -13.0 1982 -11.8 -17.9 -28.1 -38.7 -35.9 -30.7 -36.2 -31.3 -35.7 -27.8 -20.0 -12.1 1983 -13.7 -24.0 -26.4 -28.6 -29.7 -40.2 -39.7 - -34.0 -29.0 -20.2 -14.4 1984 -13.2 -17.2 -21.2 -27.8 -29.1 -29.3 -40.2 -38.6 -36.2 -23.9 -17.9 -11.0 1985 -11.9 -20.7 -25.9 -27.5 - -30.2 -41.4 -39.1 -33.3 -27.7 -14.7 -13.8 1986 -12.5 -17.4 -26.5 -27.6 -26.4 -36.8 -36.1 -40.1 -43.7 -28.0 -18.7 -12.2 1987 -11.7 -17.4 -31.5 -32.1 -31.3 -29.2 -29.0 -31.2 -33.8 -25.7 -20.4 -11.7 1988 -11.8 -18.5 - - - - - - - - - - 1989 - - - - - - - - - - - - 1990 - -17.9 -31.6 -30.7 -28.1 -39.7 -37.1 -42.1 -31.1 - - - 1991 - -14.7 -29.4 -29.4 -31.2 -31.9 -37.9 -39.7 -32.2 -25.5 -18.8 -9.7 1992 -12.4 -21.3 -23.0 -29.0 -25.3 - - - - - - - 1993 - - - - - - - - - - - - 1994 - -19.4 -29.6 -26.1 -30.1 -32.2 -33.9 -40.7 -37.0 -24.5 -14.8 -10.0 1995 -12.2 -15.2 -28.7 -29.8 -36.9 -27.5 -35.6 -35.8 -33.6 -30.3 -20.0 -12.0 1996 -11.5 -18.3 -26.3 - - - - - - - - - 1997 - -18.2 -25.7 -34.1 -35.1 -29.5 -35.8 -40.9 -34.3 -22.6 -16.6 -8.6 1998 -11.1 -14.6 -25.8 -33.4 -24.5 -26.0 -41.5 -36.4 -36.6 -30.0 -21.0 -12.3 1999 -11.1 -19.9 -26.0 -35.4 -33.5 - - - - - - -12.7 2000 - - - - - -31.7 -30.3 -35.3 - - - - 2001 - - - - - - - - - - - - 2002 -10.1 -17.0 -18.5 -30.2 - - - - - - - -10.7 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - -24.4 -26.2 -28.5 -29.3 -37.3 - - -14.7 -10.7 2008 -9.1 -16.4 -21.1 -28.6 -31.9 - - - - -22.3 - - 2009 - - - - - - - - - - - -