GEO3 12Z pressure 1982 - 751.6 746.4 745.0 747.0 745.2 746.9 740.9 738.0 746.9 755.8 763.5 1983 759.1 757.1 750.6 746.7 751.5 749.3 743.8 744.6 744.1 742.5 745.9 751.8 1984 759.4 754.4 748.8 - - - - - - - - - 1985 - - - - - - - - - - - - 1986 - - - - - - - - 736.7 741.1 749.6 - 1987 - - - - - - - - - - - 769.4 1988 771.4 765.1 767.0 - 769.5 760.7 752.9 762.9 770.8 779.2 759.9 765.1 1989 771.5 762.4 754.1 753.9 742.1 744.0 - 774.3 773.4 772.9 781.4 784.4 1990 786.8 779.2 779.2 783.9 783.5 777.9 - 768.1 762.7 775.0 779.3 781.8 1991 779.6 785.4 775.9 776.3 776.0 780.7 - 769.4 773.3 767.9 779.3 791.1 1992 784.8 785.9 779.9 778.6 783.6 783.1 - - 766.3 773.3 773.0 779.8 1993 789.1 771.3 772.7 768.0 765.8 765.9 760.6 - - - - 776.9 1994 778.8 774.9 771.4 776.4 775.7 783.5 776.0 767.7 770.8 770.0 779.4 775.4 1995 - 779.1 775.8 776.0 770.3 774.2 781.2 771.0 759.6 773.0 777.5 777.0 1996 780.5 782.0 772.6 773.7 771.2 775.8 776.7 772.8 781.6 769.5 780.7 781.8 1997 781.3 777.5 770.1 778.1 769.4 779.1 764.5 768.2 766.9 771.2 782.4 783.5 1998 778.9 776.6 774.0 762.3 772.6 772.0 770.2 765.3 773.4 771.3 770.9 775.7 1999 781.0 779.6 776.3 770.3 770.0 783.4 769.8 769.0 771.6 762.9 774.0 773.0 2000 775.3 775.4 773.3 775.7 769.3 776.7 772.4 771.5 775.8 766.5 780.7 786.1 2001 780.8 782.5 776.2 768.6 776.2 774.4 - - - - 772.7 774.7 2002 779.7 773.5 780.8 - 784.1 775.7 776.9 767.2 773.6 780.2 776.6 776.1 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - 782.9 772.9 - 774.3 - 775.6 2008 779.6 - 776.9 - 776.3 - 773.4 768.8 770.0 765.9 772.5 - 2009 - - - - - - - - - - - -