GEO3 18Z pressure 1982 - 751.7 746.5 745.0 746.6 745.3 747.0 740.7 737.5 747.3 756.3 763.7 1983 759.3 756.8 750.7 747.2 751.2 748.5 743.4 - 743.8 742.4 746.4 752.0 1984 759.5 754.8 749.1 747.7 - - - - - - - - 1985 - - - - - - - - - - - - 1986 - - - - - - - - 736.9 741.2 749.9 752.6 1987 - - - - - - - - - - - - 1988 786.1 779.3 781.5 - - 786.0 769.9 772.7 776.7 781.3 775.7 780.6 1989 786.5 779.6 777.7 - 763.9 771.4 769.0 774.6 772.2 772.9 781.4 784.2 1990 786.4 779.4 779.2 - 782.6 778.4 786.3 768.1 762.9 776.1 779.2 781.4 1991 779.2 785.4 775.8 - 776.1 780.3 779.6 770.2 774.0 768.1 779.7 790.4 1992 784.6 785.7 780.2 - 783.1 784.3 771.4 770.5 767.3 772.5 773.3 781.3 1993 788.7 770.6 771.8 768.4 - 764.5 761.3 760.1 - - - 777.6 1994 778.7 775.1 771.6 776.3 776.2 783.3 775.9 767.7 771.2 770.1 779.5 775.5 1995 777.2 778.9 776.0 775.9 770.2 774.1 780.9 770.5 759.7 773.0 777.6 777.1 1996 - 781.2 773.6 773.1 770.9 776.6 775.9 773.4 781.2 769.2 781.0 782.0 1997 781.4 777.4 770.0 778.1 769.1 779.1 764.5 767.9 767.1 770.8 782.5 783.6 1998 779.1 776.7 774.2 762.1 772.3 772.0 769.8 765.0 773.4 771.5 770.9 775.6 1999 781.1 779.7 776.2 770.2 770.4 783.3 769.5 769.1 771.2 762.7 774.3 773.4 2000 775.3 775.4 773.8 776.2 769.4 776.1 772.4 772.6 774.4 767.3 781.1 786.3 2001 780.5 782.4 776.2 768.7 776.1 774.4 775.2 - 766.7 768.9 773.2 774.2 2002 779.2 - 781.3 775.3 783.9 775.4 776.7 766.9 773.8 780.4 776.6 776.3 2003 785.8 782.5 776.5 772.0 774.7 781.1 773.0 766.8 769.2 772.9 777.2 787.0 2004 781.1 784.9 772.4 772.0 774.7 769.7 765.5 766.3 765.0 773.5 777.0 783.8 2005 782.5 777.0 776.9 770.4 774.5 781.6 773.6 769.7 767.3 770.6 775.0 789.8 2006 781.4 778.9 774.2 776.2 771.5 771.2 762.8 781.6 771.4 767.2 773.3 779.4 2007 782.6 777.9 778.6 778.6 776.8 781.5 783.3 772.9 771.9 773.7 778.2 775.8 2008 779.4 774.8 777.1 779.0 776.7 771.0 773.4 767.5 770.5 765.5 772.9 - 2009 - - - - - - - - - - - - 2010 - - - - - - - - - - - - 2011 - - - - - - - - - - - - 2012 - - - - - - - - - - - - 2013 - - - - - - - - - - - - 2014 - - - - - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - - - - - - - - - - - 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -