Esperanza station_level_pressure 1996 - 986.5 982.8 993.5 984.2 990.6 - - 994.6 978.8 - - 1997 - 990.7 983.1 983.5 993.9 - 986.9 981.7 988.9 988.2 994.2 994.7 1998 981.9 988.9 986.5 986.8 994.1 991.9 978.7 - 985.9 979.1 - 978.7 1999 984.7 - 990.7 982.6 - - 987.0 985.4 987.5 977.9 981.8 977.7 2000 977.2 990.6 - 984.5 - 993.9 1002.1 989.9 997.5 - 991.3 987.3 2001 988.1 986.8 - 985.2 996.3 989.4 - 975.2 985.0 977.2 - - 2002 - 981.1 989.6 - 992.1 988.2 990.7 992.8 999.2 988.8 987.4 986.3 2003 991.0 984.0 - - - - - - - - - - 2004 - 992.2 - - - - - - 975.5 - - - 2005 984.1 980.6 - 981.5 993.4 - - - - - - 991.4 2006 987.8 992.5 978.4 990.5 - - - 999.7 987.9 - - - 2007 987.5 985.7 987.0 991.9 997.7 990.8 993.5 986.3 993.9 983.0 989.0 981.2 2008 - 985.9 989.0 987.5 991.3 991.6 993.9 986.2 994.5 982.6 980.8 - 2009 982.7 - - - - - - - - - - -