Harry 00Z pressure 1987 990.2 987.8 986.4 987.3 981.7 984.7 990.0 974.8 986.7 976.6 977.6 983.4 1988 987.1 983.7 985.3 980.8 987.6 993.2 974.1 974.0 981.8 986.4 981.1 981.2 1989 982.8 985.7 982.6 986.3 968.6 979.3 - - - - - - 1990 - - - - - - - - - - - - 1991 - 987.5 979.0 982.7 983.8 987.1 - 979.9 975.0 975.5 980.4 992.7 1992 987.5 993.5 984.5 982.2 987.5 991.0 978.5 983.4 - - 975.8 980.9 1993 994.3 977.0 983.0 978.6 980.8 974.7 968.9 974.7 973.1 973.5 978.0 982.7 1994 983.2 981.7 977.2 982.8 982.1 996.0 985.9 - - - - 874.4 1995 - - 875.9 867.5 865.9 876.6 882.3 871.3 864.3 865.2 - - 1996 - - 868.6 870.3 - 868.2 - 984.5 985.1 - - - 1997 986.8 988.6 977.9 982.8 969.0 983.6 975.5 973.7 977.6 974.6 984.0 989.6 1998 985.4 979.4 979.1 973.1 979.9 973.2 976.8 975.5 985.8 977.0 970.8 981.2 1999 - 874.5 869.9 864.4 862.1 881.9 868.1 866.2 870.4 854.0 865.6 865.0 2000 869.3 872.6 873.8 870.4 870.0 872.5 867.1 869.9 874.1 864.6 873.2 883.6 2001 879.5 878.1 870.2 867.8 869.2 871.0 874.1 862.0 863.1 859.0 867.8 868.7 2002 874.2 867.2 877.8 867.1 879.8 877.2 869.7 862.7 875.1 878.5 874.8 870.3 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - -