Gill temperature 1985 - -17.5 -27.0 -38.9 - -38.2 -51.0 -42.8 -41.2 -29.7 -17.4 -9.0 1986 -8.5 -16.7 -27.6 -35.2 -26.8 -35.1 -41.1 -47.6 -47.4 -32.4 -16.7 -8.5 1987 -7.1 -16.5 -35.4 -38.4 -38.5 -31.4 -34.3 -40.2 -38.6 -27.3 -20.4 -6.7 1988 -7.5 -17.9 -32.0 -33.6 -33.5 -35.4 -37.4 -30.9 -36.3 -27.2 -17.1 -7.1 1989 -7.5 -19.5 -27.8 -27.9 -39.2 -47.5 - - - - - - 1990 - - - - - - - - - - - - 1991 - -13.8 -31.5 -33.1 -35.2 -33.1 -41.4 -41.9 -34.6 -26.4 -15.9 -5.9 1992 -6.4 -17.3 -20.2 -37.7 -33.6 -36.3 -34.4 -44.5 - - -17.0 -7.6 1993 -7.4 -16.5 -30.2 -34.4 -40.6 -31.9 -34.9 -42.4 - - -17.3 -9.6 1994 -9.9 -19.9 -33.1 -29.2 -42.4 -39.9 -35.4 - - - - -6.2 1995 -8.5 -16.2 -28.5 -38.5 -40.4 -33.9 -41.6 - - - - -7.4 1996 -7.9 -18.5 -33.9 -28.7 -38.4 -37.0 -41.5 -34.0 -38.1 -34.5 -16.1 -8.0 1997 -8.6 -17.5 -31.0 -41.4 -35.7 -33.2 -40.7 -45.5 -38.1 -23.4 -12.7 -7.7 1998 -9.1 -14.3 -29.0 -41.7 -34.2 -30.7 -44.5 -39.6 -42.9 -29.3 -19.2 -9.2 1999 -9.0 -19.3 -34.3 -40.4 -43.0 -39.9 -31.9 -43.6 -31.8 -27.9 -15.6 -9.5 2000 -10.6 -17.9 -24.0 -33.0 -36.0 -39.5 -36.5 -38.6 -38.0 -30.6 -13.9 -9.6 2001 -12.0 -17.2 -32.0 -32.9 -38.7 -37.0 -35.1 -49.0 -39.2 -29.6 -18.4 -8.5 2002 -8.8 -17.3 -23.8 -36.0 -31.4 -40.9 -46.4 -43.9 -31.2 -25.3 -16.0 -9.1 2003 - - - - - - -36.2 - - - - - 2004 - - - - - - - - - - - - 2005 - -19.2 - -38.5 -34.6 - -35.1 -41.6 - -28.4 -16.9 -6.8 2006 -9.6 - - - - - - - - - - - 2007 - - - -33.2 -36.2 -36.3 - -38.1 -35.0 -31.8 -15.9 -7.1 2008 -6.1 -18.2 -28.4 -32.8 -36.2 -32.9 -42.3 -50.4 -35.9 -27.8 - - 2009 - - - - - - - - - - - -