Manuela 18Z temperature 1984 - - -18.3 - - - - - - - - - 1985 - -14.0 -18.7 -23.2 -23.4 -26.2 -28.2 -25.0 -26.7 -23.0 -12.2 -5.0 1986 -4.3 -10.0 -19.0 -22.0 -21.7 -25.7 -24.7 -27.2 -28.7 -20.2 -12.8 -4.7 1987 -2.6 -12.5 -21.0 -26.3 -26.5 - - - - - - - 1988 -6.5 -13.6 -22.0 -21.8 -25.9 -25.4 -27.0 -24.3 -22.9 -17.1 -13.7 -6.8 1989 -6.6 -14.4 -20.3 -21.5 -26.7 -30.3 -25.8 -29.1 -23.4 -21.5 -12.3 -4.8 1990 -6.8 -14.1 -21.3 -26.1 -25.5 -26.6 -22.5 -28.4 -27.4 -21.2 -11.2 -4.5 1991 -6.6 -10.8 -22.0 -21.8 -26.0 -22.6 -25.8 -24.6 -23.9 -20.8 -13.1 -3.6 1992 -6.9 -13.0 -20.2 -25.9 -24.9 -24.8 -24.7 -22.6 -28.7 -22.3 -12.6 -7.9 1993 -5.3 -13.3 -20.7 -24.9 -29.6 -26.2 -25.8 -28.9 -24.6 -22.7 -13.0 -7.6 1994 -5.6 -14.8 -24.5 -21.8 -29.2 -26.9 -24.9 -30.6 -25.0 -21.1 -13.0 -7.1 1995 -7.5 -13.0 -20.2 -24.1 -25.8 -25.8 -25.4 -25.6 -26.2 -22.2 -13.1 -4.8 1996 -7.4 -12.6 -17.7 -21.4 -27.4 -27.4 -27.0 -22.4 -26.5 -24.0 -11.2 -6.1 1997 -6.5 -14.6 -21.4 -26.5 -27.0 -24.8 -29.8 -30.4 -24.8 -18.5 -9.6 -7.8 1998 -8.3 -12.3 -23.2 -27.6 -25.8 -23.4 -27.4 -26.0 -28.8 -20.7 -13.7 -4.9 1999 -5.5 -13.3 -22.3 -26.0 -28.0 -23.7 -24.9 -27.9 -25.0 -20.5 -11.6 -7.7 2000 -8.1 -14.4 -21.3 -24.5 -25.1 -25.9 -26.0 -26.8 -22.8 -22.6 -11.2 -7.3 2001 -7.6 -12.5 -20.5 -24.5 -25.2 -24.4 -26.3 -29.9 -26.1 -22.8 -12.8 -5.4 2002 -4.5 -13.4 -19.4 -25.4 -22.8 -25.9 -28.3 -31.6 -23.9 -20.9 -13.8 -6.9 2003 - - - - -23.0 -26.7 -27.1 - - - - - 2004 - - - - - - - - - - - - 2005 - -14.1 -22.1 -26.6 - -26.0 -26.6 -28.0 -24.2 -20.1 -12.4 -4.5 2006 -6.1 - - - - - - - - - - - 2007 - - - - - - - -28.2 -26.4 - - -5.4 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - -