D_47 06Z temperature 1983 - -13.9 - - -28.6 - - - - - -17.8 - 1984 - -15.7 -19.5 -29.3 -27.1 -34.0 -34.5 -27.4 -27.7 -24.1 -18.6 -10.4 1985 -10.3 -15.8 -21.8 -28.2 -32.9 - - - - - - -12.3 1986 -10.7 -12.7 -18.9 -26.9 -31.9 - - - - - - -11.4 1987 -9.4 - -21.7 - -32.3 -25.1 - -33.0 -26.9 -19.9 -17.8 -12.1 1988 -11.2 - - -25.6 - - - - - - - - 1989 - - -23.5 - - - -29.4 - -23.8 -22.6 -18.3 -10.3 1990 -10.7 - -24.0 - - -32.9 - - - - - - 1991 - - - - - - - - - - - - 1992 - -14.8 -21.0 -26.6 -30.2 -27.2 - - - -26.4 -16.0 -12.5 1993 -9.8 -13.9 -20.3 -26.8 -30.6 -33.8 - - - - - - 1994 - - - - - - - -34.0 -24.8 -22.2 - - 1995 - - - - - - - - - - - - 1996 - - - - - - - - - - - - 1997 - - - - - - - - - - - - 1998 - - - - - - - - - - - - 1999 - - - - - - - - - - - - 2000 - - - - - - - - - - - - 2001 - - - - - - - - - - - - 2002 - - - - - - - - - - - - 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - -15.2 -23.3 -29.1 - - - -30.8 - - - -9.6 2006 - -15.3 - - - - - - - - - - 2007 - -16.2 -20.1 - - - - - - - - - 2008 -11.0 - - - - - - - - - - -10.8 2009 - - -22.0 -29.2 -28.7 -29.5 -24.9 -28.7 -25.6 -24.0 -16.3 -11.5 2010 - -16.2 -21.5 -29.5 -29.7 -31.7 -32.9 -29.5 -30.2 -23.0 -16.2 -10.5 2011 -10.3 -16.7 -21.7 -25.5 -31.0 -30.1 -32.0 -28.3 -25.9 -22.9 -16.5 -11.2 2012 -11.8 -15.6 -22.4 -28.4 -27.9 -28.3 -32.3 -27.8 -28.3 -23.8 -16.2 -11.2 2013 -9.8 -16.5 -22.5 -29.4 -29.4 -30.9 -34.2 -28.5 -23.4 -23.3 -17.7 -10.5 2014 -10.0 -15.7 -22.6 -25.5 -30.7 -33.4 -27.8 -32.7 -28.9 -23.1 -14.9 -12.1 2015 - - -20.6 -28.7 -28.5 -32.1 -31.6 -31.4 -30.7 -26.3 -18.4 -11.4 2016 -11.8 -16.5 -21.9 -29.3 -24.7 -29.9 -29.8 -29.2 -28.1 -22.4 -13.9 -11.0 2017 -10.3 -12.3 -22.7 -28.0 -30.0 -33.3 -31.5 -32.7 -26.8 -23.6 -15.7 -12.2 2018 -10.5 -15.3 -21.8 -22.4 -31.5 -32.9 -28.7 -28.9 -28.7 -24.3 -16.6 -11.3 2019 -11.9 -14.6 -19.8 -26.3 -30.8 -31.9 -25.9 -30.5 -28.6 -23.4 -14.8 -10.1 2020 -10.1 -15.5 -23.9 -23.0 -29.3 -32.3 -27.3 -32.0 -27.6 -23.7 -17.2 -10.5 2021 -11.5 -16.1 -22.9 -30.0 -32.3 -30.2 -31.9 -24.9 -27.2 -20.9 -17.4 -10.8 2022 -12.6 -14.7 -20.1 -28.1 -28.9 -29.7 -28.7 -31.9 -26.5 -22.1 -16.1 -11.5 2023 -12.2 -14.6 -19.5 -24.1 -30.5 -29.6 -31.2 -30.9 - -25.2 -17.4 -12.2 2024 -12.2 -17.0 -22.3 -32.3 -31.3 -32.1 -26.6 -28.8 -28.6 - - -