Gill temperature 1985 - -17.5 -27.0 -38.9 - -38.2 -51.0 -42.8 -41.2 -29.7 -17.4 -9.4 1986 -8.5 -16.7 -27.6 -35.2 -26.8 -35.1 -41.1 -47.6 -47.4 -32.4 -16.7 - 1987 -7.1 -16.5 -35.4 -38.4 -38.5 -31.4 -34.3 -40.2 -38.6 -27.3 -20.7 -7.0 1988 -7.6 -17.9 -32.0 -33.6 -33.5 -35.4 -37.4 -30.9 -36.3 -27.2 -17.1 -7.2 1989 -7.5 -19.6 -27.9 -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 -6.4 - -27.6 -35.0 -33.6 -33.7 -35.1 -44.8 -40.2 -27.3 -18.1 -7.6 2004 -9.7 -20.8 -31.7 -32.9 -41.1 -35.7 -48.4 -47.2 -43.1 -32.3 -15.7 -7.9 2005 -6.6 -18.2 -29.6 -37.4 -33.5 -36.8 -34.4 -40.9 -38.1 -27.1 -15.9 -5.8 2006 -8.5 -14.1 -28.2 -37.9 -45.3 -35.2 -44.1 -35.4 -33.4 -29.5 -16.1 -8.3 2007 -6.2 -15.1 -27.6 -33.2 -36.2 -36.3 -35.9 -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 -19.5 -8.8 2009 -8.2 -20.3 -31.1 -25.2 -40.6 -40.6 -37.8 -41.1 -41.6 -29.7 -13.1 -7.3 2010 -8.0 -15.6 -27.5 -31.9 -41.1 -43.4 -42.9 -42.5 -42.4 -30.8 -16.9 -8.2 2011 -8.4 -18.6 -26.3 -34.1 -34.7 -34.2 -30.0 -35.0 -38.1 -27.1 -16.5 -7.0 2012 -8.4 -13.6 -26.5 -32.2 -29.1 -41.5 -43.0 -42.5 -34.4 -26.2 -17.8 -6.2 2013 -6.6 -15.1 -22.9 -41.3 -32.5 -44.1 -42.0 -41.2 -36.6 -26.9 -18.8 -8.5 2014 -7.6 -16.5 -28.4 -40.7 -35.6 -43.2 -47.6 -30.6 -29.8 -23.9 -19.2 -10.2 2015 -8.6 -14.2 -27.9 -40.0 -35.4 -39.0 -45.1 -39.3 -41.9 -30.6 -19.5 -8.8 2016 -5.4 -18.1 -29.0 -36.2 -36.4 -42.2 -43.0 -39.4 -39.2 -29.0 -17.5 -8.9 2017 -8.5 -18.4 -27.3 -26.8 -30.5 -37.4 -42.6 -35.4 -44.2 -28.7 -19.7 -9.5 2018 -9.2 -16.4 -25.8 -31.9 -38.2 -38.1 -40.1 -45.7 -35.8 -24.5 -15.4 -7.8 2019 -8.9 -13.7 -25.6 -35.9 -33.2 -35.7 -34.7 -32.9 -32.8 -28.0 -17.4 -7.1 2020 -8.6 -13.1 -27.0 -34.1 -34.4 -37.6 -35.1 -37.6 -37.3 -25.9 -19.5 -9.6 2021 -8.2 -18.5 -31.2 -39.9 -35.1 -37.3 -36.5 -48.9 -39.0 -31.7 -18.2 -8.8 2022 - -14.2 -26.1 -32.2 -32.0 -39.4 -31.3 -38.5 -37.9 -31.9 -20.9 -7.7 2023 -8.7 -16.5 -30.7 -37.2 -42.2 -34.4 -44.3 -48.1 -26.3 -31.2 -19.8 -9.2 2024 -8.3 - - - - - - - - - - -