Great_Wall 00Z msl_pressure 1987 - - - - - - - 1000.6 - - 982.8 987.0 1988 992.8 - - - - - - - - - 984.4 - 1989 - - - 993.9 - 983.5 - 999.2 991.0 984.3 985.0 991.7 1990 991.0 991.4 987.0 991.4 - 985.1 993.2 980.7 994.8 - 973.3 988.3 1991 - 992.0 990.1 993.3 - - - - - - - - 1992 - - - - - - - - - - - - 1993 - - - - - - - - - 985.7 986.1 985.0 1994 986.4 987.2 993.5 996.5 995.8 997.3 - 990.7 983.2 990.3 995.1 - 1995 993.5 993.0 - 993.4 994.0 991.5 991.8 995.9 989.2 994.3 983.4 986.8 1996 991.1 - 986.7 996.3 984.9 991.9 991.7 990.9 996.8 986.6 979.7 989.5 1997 - - 992.0 985.7 998.9 1002.1 992.3 986.0 994.7 991.7 - - 1998 986.0 994.5 991.3 995.4 1000.8 997.3 979.1 986.9 991.0 982.0 985.3 982.3 1999 990.3 984.9 995.5 989.2 993.1 998.5 992.1 988.9 991.7 986.6 990.3 983.7 2000 982.5 996.0 1003.6 990.4 998.9 998.3 1005.8 992.1 1002.0 990.5 995.5 989.8 2001 990.0 988.2 988.2 988.9 1000.1 991.6 996.4 982.8 991.7 986.0 - - 2002 - 987.2 993.3 988.7 993.9 991.3 995.2 999.6 1003.0 989.9 989.6 989.6 2003 994.5 987.7 997.5 995.5 992.1 997.5 985.2 - - 984.7 984.5 994.9 2004 985.8 998.8 - - 995.7 990.4 992.0 990.9 980.5 - - 992.3 2005 988.2 988.7 992.5 985.3 995.7 997.0 998.8 992.3 1000.9 996.0 990.8 995.5 2006 - - - 990.4 - - - 1001.4 992.0 - 983.0 - 2007 991.7 988.0 989.9 990.3 - - 996.5 - 998.4 986.6 991.9 985.9 2008 - - - 989.5 994.1 995.1 997.7 992.2 1003.6 - 985.1 - 2009 986.3 - - - - - - - - - - -