Zhongshan station_level_pressure 1989 - - 985.3 989.9 974.8 982.4 979.7 986.3 981.2 978.8 988.8 987.3 1990 989.4 983.6 987.0 993.3 995.7 991.5 996.7 980.3 975.8 986.2 986.1 986.1 1991 983.6 989.6 981.9 983.5 986.4 989.7 990.7 981.4 987.1 977.8 985.7 993.7 1992 987.8 991.8 987.2 987.3 996.0 995.8 984.3 980.2 979.3 984.1 979.3 985.9 1993 993.0 979.6 985.6 985.6 981.5 983.8 978.4 976.8 979.6 977.6 982.8 984.4 1994 987.7 982.1 980.2 988.8 989.9 997.4 987.7 981.2 982.3 979.9 990.3 982.6 1995 984.8 986.8 985.0 987.4 987.3 988.7 995.4 983.8 971.2 983.6 985.2 982.3 1996 988.5 989.6 982.1 985.2 985.9 988.5 987.9 983.9 993.6 980.4 989.6 988.9 1997 987.5 984.8 977.6 990.9 982.0 990.0 977.2 981.5 979.3 982.9 989.7 990.7 1998 985.0 984.4 982.4 975.3 983.0 982.2 984.3 976.9 986.7 983.8 977.7 979.2 1999 987.1 988.1 988.6 982.3 982.2 995.1 984.6 979.7 984.1 970.5 980.9 976.9 2000 979.6 981.9 983.4 986.5 980.9 988.1 984.2 981.8 985.9 976.0 986.4 992.2 2001 - - - - 986.1 983.8 - 980.9 - 977.5 - - 2002 - 978.0 - - - - 987.6 978.9 985.7 992.0 984.4 - 2003 - - - - 987.6 - 986.1 - - - - - 2004 - - - - - 980.4 979.1 978.4 977.4 - - - 2005 - - - - - - - - - - - 995.3 2006 986.5 986.1 982.9 984.8 - - - 993.2 985.0 - 979.4 983.2 2007 - 982.8 - - - - - 983.4 984.1 - 984.0 981.7 2008 983.8 980.6 985.7 988.1 989.1 984.2 986.7 980.2 981.8 975.7 979.1 - 2009 985.2 - - - - - - - - - - -