Marble_Point 12Z pressure 1980 - - 978.0 980.1 975.2 971.5 981.4 975.2 980.1 963.3 981.7 976.2 1981 - 978.3 979.9 981.1 974.7 969.2 976.4 984.5 978.0 970.4 967.2 969.1 1982 980.4 976.5 967.5 969.8 976.0 969.3 978.6 965.3 965.6 969.8 974.5 984.5 1983 982.1 984.6 975.1 970.3 975.1 978.1 970.3 968.2 972.9 959.4 963.7 975.3 1984 984.5 978.9 969.4 970.6 977.1 970.5 965.1 974.2 970.2 962.6 - - 1985 - 978.7 977.0 977.2 - 974.5 964.4 975.5 965.6 967.2 963.6 972.1 1986 979.6 985.7 982.9 973.2 983.9 983.3 972.6 975.3 970.5 965.7 967.5 973.7 1987 985.6 980.1 978.6 980.9 975.3 979.9 985.2 967.0 980.6 971.2 970.5 978.0 1988 981.0 976.7 977.5 976.3 982.3 987.3 969.3 969.4 976.6 982.1 - - 1989 - 977.6 977.3 980.7 965.5 974.1 973.0 977.9 976.7 968.5 969.5 981.7 1990 981.0 974.4 978.4 985.4 991.2 980.7 990.0 974.1 965.2 974.4 976.0 977.0 1991 974.8 981.2 974.6 979.5 980.5 983.5 985.3 976.1 974.1 970.6 976.1 987.1 1992 980.4 988.1 979.4 978.1 983.5 987.9 975.7 977.9 967.9 972.5 970.2 975.0 1993 987.6 971.6 978.9 975.1 976.4 969.2 965.9 - - 969.3 972.7 975.2 1994 977.2 975.8 971.7 978.8 978.4 992.2 - - - 971.3 977.2 973.5 1995 973.5 974.0 983.8 976.3 973.9 981.8 994.4 979.6 971.2 973.2 971.2 970.4 1996 978.6 982.9 977.8 972.1 979.0 975.5 975.9 981.3 982.7 965.3 979.7 977.9 1997 981.0 981.4 972.8 978.9 966.7 980.3 973.1 - - 970.4 980.3 982.9 1998 977.6 973.7 975.3 969.0 975.6 - - - - - - - 1999 - 980.2 977.9 974.3 972.1 991.9 972.1 977.3 975.5 958.9 965.5 967.3 2000 971.2 975.4 977.2 976.6 977.1 979.1 976.4 978.1 982.1 969.5 974.9 988.0 2001 983.4 981.2 978.6 972.7 978.6 975.8 981.0 976.6 972.7 966.0 969.3 969.0 2002 975.5 971.0 983.7 974.7 985.6 987.8 982.5 972.3 980.1 983.2 976.4 971.5 2003 982.1 - - - - - 971.3 - - - - - 2004 - - - - - - - - - - - - 2005 - 970.7 975.1 971.5 973.2 980.5 974.7 969.1 - 964.2 971.4 986.7 2006 977.4 - - - - - - - - 969.3 972.0 975.5 2007 978.8 976.2 983.2 978.4 980.2 980.3 990.3 973.0 972.0 975.6 975.2 968.9 2008 972.7 973.3 977.8 979.2 977.2 970.8 973.6 975.5 966.6 967.6 - - 2009 - - - - - - - - - - - -