Byrd 06Z temperature 1980 - - -25.2 -22.1 -25.4 -34.7 -25.8 -28.6 -34.6 -29.3 -23.2 -15.7 1981 - -23.3 -24.7 -30.8 -32.1 -30.3 -36.2 -43.1 -35.7 -29.5 -24.1 -14.9 1982 -14.3 -20.4 -30.4 -38.6 -36.0 -30.0 -35.6 -31.9 -37.6 -30.8 -22.8 -13.4 1983 -15.4 -27.3 -28.2 -28.1 -29.2 -39.4 -39.7 -42.3 -34.7 -32.5 -23.9 -16.2 1984 -15.6 -20.5 -21.6 -27.6 -30.0 -29.0 -40.0 -39.0 -36.6 -26.1 -21.1 -13.4 1985 -14.4 -23.7 -27.6 -29.0 -30.2 -30.4 -41.8 -38.8 -33.9 -30.2 -17.3 -15.9 1986 -15.3 -20.2 -27.7 -27.7 -27.5 -36.4 -36.4 -40.4 -45.0 -31.2 -21.6 -15.0 1987 -14.4 -19.6 -33.6 -33.0 -31.2 -28.5 -28.6 -31.6 -34.8 -29.8 -24.9 -14.8 1988 -14.3 -20.9 - - - - - - - - - - 1989 - - - - - - - - - - - - 1990 - -20.7 -32.9 -29.3 -27.3 -38.6 -36.6 -39.9 -30.0 - - - 1991 - -16.5 -29.9 -28.1 -30.3 -31.9 -36.0 -37.4 -31.2 -26.5 -21.2 -12.0 1992 -15.4 -23.0 -23.7 -28.2 -23.9 - - - - - - - 1993 - - - - - - - - - - - - 1994 - -23.1 -30.3 -26.5 -30.4 -31.8 -33.4 -39.2 -36.9 -26.6 -18.1 -12.3 1995 -15.0 -17.7 -29.7 -29.5 -36.2 -25.3 -34.5 -34.3 -32.5 -32.6 -22.3 -14.8 1996 -14.4 -21.5 -26.6 - - - - - - - - - 1997 - -20.4 -26.7 -33.2 -34.7 -29.7 -34.2 -39.0 -33.6 -24.9 -19.3 -11.5 1998 -14.8 -16.5 -28.3 -33.3 -24.0 -26.3 -39.9 -34.9 -36.4 -33.0 -23.7 -15.2 1999 -14.7 -24.0 -26.2 -34.4 -33.3 - - - - - - -14.7 2000 -17.6 -20.0 -22.6 -33.5 -28.8 -30.4 -29.3 -33.7 - - - - 2001 - - - - - - - - - - - - 2002 -14.5 -20.9 -20.4 - - - - - - - - -14.9 2003 -13.0 -21.2 -22.3 -28.3 -31.1 -32.8 -36.1 -36.3 - - -21.8 -14.2 2004 -14.5 -22.5 -27.9 -29.5 - - - - - - - -15.4 2005 -10.7 -24.1 -28.6 -31.8 -30.3 - - - - - - - 2006 - -15.9 -30.2 -35.8 -36.9 -32.0 -36.5 -29.5 - -26.8 -21.1 -15.5 2007 -11.5 -20.5 -22.7 -26.1 -26.7 -29.9 -29.2 -36.9 - - -19.5 -15.1 2008 -13.0 -21.4 -22.9 -29.6 -32.2 - - - - -26.5 -23.9 -17.0 2009 -15.5 -21.9 -24.7 -27.9 -33.6 -34.6 -27.3 -33.4 -36.5 -32.2 -18.0 -13.2 2010 -15.0 -19.1 -23.3 -29.6 -35.9 -36.0 -40.6 -31.3 -34.0 -30.2 -23.4 -15.8 2011 -16.1 -22.5 -25.9 -30.1 -31.9 -33.2 -23.3 -28.7 -38.7 -26.8 -21.2 -15.1 2012 -15.5 -19.4 -24.2 -29.6 -26.0 -37.3 -36.6 -36.1 -34.3 -27.7 -23.1 -12.0 2013 -12.7 -20.6 -21.7 -35.7 -32.3 -40.4 -38.1 -33.7 -34.5 -29.0 -24.4 -13.6 2014 -14.3 -21.3 -28.8 -31.8 -26.7 -33.4 -38.1 -29.9 -26.1 -25.7 -25.6 -18.3 2015 -13.5 -17.6 -28.0 -36.8 -27.6 -36.0 -38.1 -42.6 -32.6 -26.8 -23.9 -16.1 2016 -12.5 -23.0 -30.9 -32.0 -29.9 -34.3 -31.3 -33.9 -37.9 -26.1 -21.6 -13.4 2017 -15.2 -17.5 -24.7 -24.3 -28.1 -31.1 -39.3 -35.1 -43.7 -28.7 -23.1 -16.2 2018 -15.9 -21.1 -26.2 -31.0 -35.0 -36.4 -32.3 -40.0 -36.0 -24.6 -20.6 -15.1 2019 -13.7 -19.0 -26.4 -31.0 -33.4 -29.2 -32.3 -31.9 -30.6 -29.9 -21.9 -13.5 2020 -15.3 -15.6 -28.3 -31.0 -25.3 -36.0 -29.8 -36.1 -34.3 -30.3 -24.6 -17.0 2021 -16.1 -22.3 -30.9 -34.6 -30.3 -29.6 -30.6 -40.5 -35.8 -29.7 -21.5 -16.9 2022 -16.6 -19.6 -25.9 -29.2 -28.9 -35.0 -29.5 -32.4 -33.2 -32.6 -23.6 -13.6 2023 -15.8 -19.9 -26.8 -31.3 -35.1 -32.7 -29.4 -45.8 -26.5 -32.1 -23.7 -15.3 2024 -16.7 -22.8 -23.6 -31.0 -25.7 -26.0 -38.0 -34.8 -38.9 - - -