D_10 00Z pressure 1980 - 957.2 952.7 957.3 953.9 951.2 967.1 953.3 952.9 943.8 958.0 956.3 1981 - 951.8 959.2 957.6 - - - - - - - - 1982 - - 945.8 946.3 954.0 956.5 963.4 943.2 940.3 - - - 1983 960.1 955.6 949.8 - 957.0 959.3 948.0 - 950.5 941.6 949.7 - 1984 - 955.5 952.4 952.6 961.0 - - - - 945.3 950.3 - 1985 - 951.7 - - - - - 954.3 - - - - 1986 - 966.6 - - - 950.6 - - - - - 952.9 1987 960.9 952.5 950.2 - 948.7 959.9 958.2 939.2 949.2 - - - 1988 956.4 951.0 950.4 951.5 958.7 960.9 946.6 - 952.3 - 951.2 948.9 1989 956.8 951.3 948.8 954.1 943.1 948.6 951.7 957.3 953.4 - 946.6 957.6 1990 955.9 949.4 951.7 961.7 958.3 956.9 956.7 954.0 941.8 - - - 1991 - - - - - - - - - - - - 1992 - - 952.2 950.7 954.3 960.7 948.5 953.8 943.6 949.4 948.8 952.0 1993 959.6 953.3 - - - - - - - 942.7 945.7 951.3 1994 952.6 951.5 - 951.1 954.3 - - - 954.9 949.2 952.0 949.2 1995 951.7 950.9 950.8 948.9 945.8 - - - - - - - 1996 - - - - - - - - - - - - 1997 - - - - - - - - - - - - 1998 - - - - - - - - - - - - 1999 953.1 952.5 953.5 942.3 946.1 - - - 951.5 943.2 946.3 945.3 2000 948.5 952.1 951.8 950.7 943.8 953.9 - - - - - 960.0 2001 954.8 - - 951.4 960.2 950.7 - - - - - - 2002 - - - - - - - - 947.9 956.7 - - 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - -