D_10 12Z pressure 1980 - 957.3 952.6 957.6 954.6 951.8 967.2 953.3 952.3 944.6 957.8 955.3 1981 - 951.8 958.9 957.9 - - - - - - - - 1982 - - 945.6 946.1 954.0 957.0 963.5 943.3 940.4 - - - 1983 959.7 955.8 950.5 952.0 956.1 958.0 948.2 952.7 949.9 941.6 949.4 - 1984 - 954.8 951.9 953.3 960.9 951.6 953.9 960.2 946.4 945.6 950.2 964.8 1985 - 952.1 954.9 956.8 - 957.9 942.0 953.0 945.6 947.1 945.0 951.7 1986 956.1 966.1 954.8 - 957.2 950.6 950.2 954.6 - - - 952.4 1987 960.9 952.0 949.3 954.1 948.2 959.6 957.0 939.2 948.9 - - 954.8 1988 956.3 950.6 950.8 951.8 957.6 961.0 945.4 950.0 952.4 956.4 950.5 948.7 1989 956.1 951.3 948.4 954.3 943.2 949.9 952.5 957.5 953.4 950.1 946.4 957.4 1990 955.2 948.7 951.8 961.9 958.7 957.3 956.7 953.5 941.2 - - - 1991 - - - - - - - - - - - - 1992 - 959.5 952.4 951.5 955.3 961.9 949.3 953.1 943.8 949.1 948.8 952.3 1993 958.8 952.6 - - - - - - - 942.3 945.5 950.8 1994 952.2 951.8 948.8 950.9 954.6 - - - 957.7 949.2 952.0 948.6 1995 951.6 950.7 951.7 948.0 946.2 - - - - - - - 1996 - - - - - - - - - - - - 1997 - - - - - - - - - - - - 1998 - 947.2 947.5 942.8 953.9 949.3 - - 945.4 - - - 1999 953.0 952.1 952.9 942.1 946.0 - - - 951.0 942.3 946.3 944.7 2000 948.3 951.4 951.7 951.5 943.4 954.0 - - - - - 959.8 2001 954.4 953.3 955.7 950.8 959.7 950.1 - - - 944.8 950.4 950.0 2002 956.9 947.9 955.9 952.0 961.3 957.1 - 950.6 948.4 956.8 952.4 948.5 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - -