Orcadas 18Z station_level_pressure 1996 - - 986.3 991.6 986.9 990.8 992.8 989.4 1002.1 988.6 - - 1997 991.3 991.2 988.0 984.6 998.0 998.3 989.5 987.9 987.5 990.0 994.2 - 1998 - - 992.3 994.0 - 996.1 981.7 - - 985.2 - - 1999 - - - 989.1 992.8 997.3 992.1 987.6 990.8 984.0 990.5 985.3 2000 981.9 - 1002.5 - - 999.1 1005.3 990.3 1000.9 987.2 992.9 990.5 2001 992.8 987.3 - 987.2 1002.5 990.3 990.2 986.2 990.9 990.6 987.9 - 2002 - 989.0 988.9 - 990.6 986.7 994.9 998.2 1004.3 992.0 989.2 993.0 2003 991.0 991.0 991.7 992.6 992.5 1000.9 986.0 - - 986.4 - 994.1 2004 988.3 997.1 991.5 - 988.2 987.6 994.0 991.5 981.5 - - 993.1 2005 - 987.8 - 983.3 994.1 993.8 997.5 - 1000.2 - 989.0 990.8 2006 991.8 996.7 987.8 995.3 - 995.5 - 999.9 990.0 - - 987.7 2007 987.0 988.8 986.0 989.5 997.6 988.8 993.5 991.2 999.6 986.2 990.6 986.5 2008 988.6 992.2 991.3 989.0 996.6 994.6 999.5 993.8 1004.6 989.5 - - 2009 988.7 - - - - - - - - - - -