D_47 temperature 1983 - -16.0 - - -28.4 - - - - - -21.3 - 1984 - -18.4 -21.2 -30.3 -27.1 - -34.0 -27.9 -29.1 -27.6 -22.7 -13.7 1985 -13.2 -18.5 -23.8 - - - - - - - - -16.1 1986 -14.1 -14.6 -20.6 -27.9 -31.8 - - - - - - -15.0 1987 -12.0 - - - -32.1 -25.0 - -33.2 -28.1 -23.2 -20.7 -14.8 1988 -13.5 - - -26.6 - - - - - - - - 1989 - - - - - - - - - - - - 1990 - - - - - - - - - - - - 1991 - - - - - - - - - - - - 1992 - -17.8 -23.6 -27.3 -30.4 -27.2 - - - -29.8 -19.0 -15.9 1993 -12.1 -16.9 -22.0 -27.4 -31.0 -34.0 - - - - - - 1994 - - - - - - - -34.5 -25.7 -25.1 - - 1995 - - - - - - - - - - - - 1996 - - - - - - - - - - - - 1997 - - - - - - - - - - - - 1998 - - - - - - - - - - - - 1999 - - - - - - - - - - - - 2000 - - - - - - - - - - - - 2001 - - - - - - - - - - - - 2002 - - - - - - - - - - - - 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - -18.8 -25.7 - - - - -31.0 - - - -12.4 2006 - -18.1 - - - - - - - - - - 2007 - -19.1 -21.6 - - - - - - - - - 2008 -14.1 - - - - - - - - - - -13.8 2009 - - -24.6 -30.0 -29.0 -29.1 -25.1 -29.0 -27.3 -27.9 -20.2 -14.5 2010 - -18.8 -23.8 -30.3 -29.5 -31.9 -33.1 -29.7 -32.4 -25.5 -19.3 -13.2 2011 -12.6 -20.1 -24.1 -26.3 -31.1 -30.2 -32.3 -29.1 -27.2 -25.6 -19.6 -13.8 2012 -14.7 -18.8 -24.3 -29.2 -27.8 -28.7 -32.1 -28.3 -29.9 -26.9 -19.6 -13.6 2013 -12.3 -19.7 -24.8 -30.5 -29.6 -30.8 -34.1 -28.9 -24.6 -25.9 -21.1 -12.5 2014 -12.3 -18.6 -24.5 -26.5 -31.0 -33.4 -28.3 -33.2 -30.8 -26.7 -18.6 -14.4 2015 - - -22.1 -29.5 -28.5 -31.7 -32.1 -31.5 -32.3 -30.1 -21.5 -14.0 2016 -14.9 -19.7 -23.7 -29.9 -24.6 -30.0 -29.7 -29.7 -29.6 -25.1 -16.9 -14.1 2017 -12.8 -14.6 -25.2 -29.0 -29.9 -33.5 -31.4 -33.2 -28.1 -26.5 -19.4 -15.0 2018 -13.4 -18.0 -24.4 -23.0 -31.6 -32.8 -28.7 -29.3 -30.6 -27.4 -20.2 -14.1 2019 -14.8 -17.5 -21.3 -27.0 -30.7 -32.0 -25.9 -30.9 -30.7 -26.3 -17.7 -12.7 2020 -12.4 -18.6 -26.1 -23.8 -29.7 -32.1 -27.4 -32.5 -29.4 -26.8 -20.5 -13.3 2021 -14.1 -19.5 -24.9 -30.7 -32.5 -30.3 -31.7 -25.6 -28.9 -23.2 -20.9 -14.2 2022 -16.0 -17.7 -22.3 -29.0 -29.0 -29.9 -28.7 -32.1 -27.8 -24.8 -19.0 -14.7 2023 -15.2 -16.8 -21.2 -25.0 -30.6 -29.4 -31.2 -31.3 -29.0 -28.5 -20.6 -14.9 2024 -15.2 -19.7 -24.2 -33.3 -31.3 -32.0 -26.8 -29.5 -30.0 - -20.0 -