Lettau 06Z pressure 1986 - 991.6 990.1 979.3 992.8 990.7 978.1 979.9 976.2 972.3 974.3 981.8 1987 992.3 988.5 985.7 987.7 982.8 986.5 992.2 975.3 987.7 977.4 978.0 985.4 1988 988.6 983.8 985.1 981.4 988.9 995.4 974.6 975.7 982.1 988.3 981.4 983.4 1989 984.5 985.0 982.8 987.1 968.8 979.5 977.8 982.6 981.6 973.1 975.6 989.2 1990 988.6 982.6 985.7 990.8 996.5 985.1 995.8 979.2 969.9 980.4 982.6 983.5 1991 982.3 989.0 979.9 983.9 986.4 989.2 990.5 - - - 983.1 995.0 1992 988.5 994.4 988.0 984.1 989.4 992.6 - - - - 977.5 982.9 1993 995.7 978.7 985.1 981.0 982.7 - - - - - 979.2 984.0 1994 984.6 982.4 977.6 984.7 984.7 996.8 987.1 973.1 987.6 976.8 984.2 981.2 1995 981.2 980.8 991.0 981.7 981.1 986.1 - - - - 977.0 977.6 1996 985.7 - - - - - - - - - - 985.2 1997 - - - - - - - - - - - - 1998 - - 981.6 974.3 982.1 - - - - - - - 1999 - - 983.9 980.3 976.2 999.3 978.6 981.9 981.0 964.1 - - 2000 - - 983.3 981.9 982.1 984.7 979.3 982.3 987.5 975.6 - - 2001 - - 983.3 977.9 983.6 981.3 985.5 981.8 975.8 971.1 - - 2002 - - 989.7 979.8 991.5 993.9 986.8 977.2 985.8 989.6 - - 2003 - - 984.0 977.2 977.8 992.1 978.0 976.9 979.8 972.5 - - 2004 - - 984.1 977.7 980.2 976.8 977.6 980.4 982.2 979.4 - - 2005 - - 982.1 979.0 979.8 989.2 979.7 976.5 975.7 970.8 - - 2006 - - 984.8 987.1 976.7 981.2 976.3 990.7 983.8 976.5 - - 2007 - 985.7 - - 988.4 989.1 1000.4 984.2 982.8 985.9 985.3 977.9 2008 982.4 984.1 988.0 989.8 986.8 981.8 983.7 987.4 - - - - 2009 - 990.0 985.3 989.0 993.5 995.3 993.8 992.6 986.9 979.6 985.4 984.0 2010 999.0 993.6 989.4 984.8 986.9 980.4 973.4 977.0 - 977.5 975.3 990.7 2011 992.0 983.3 988.2 986.1 974.6 984.5 - - - - - - 2012 - - - - - - - - - - - - 2013 - - - - - - - - - - - - 2014 - 981.0 979.5 976.3 980.7 978.7 980.5 972.7 980.0 970.3 983.6 981.3 2015 982.9 975.2 978.7 977.3 981.3 980.6 972.9 974.9 971.5 976.1 973.5 983.6 2016 977.8 978.3 976.3 982.2 979.3 974.7 983.8 986.0 968.4 976.2 988.5 987.0 2017 992.0 986.5 986.6 979.0 972.5 978.1 976.1 972.4 972.6 979.4 973.5 983.0 2018 982.1 981.0 980.8 983.5 981.1 984.0 979.2 987.8 971.6 971.0 972.9 979.7 2019 984.4 985.5 981.8 978.2 982.7 969.8 984.1 980.0 969.2 978.3 989.2 992.7 2020 989.8 980.9 976.7 977.8 974.9 975.5 980.9 983.7 981.4 968.9 974.5 974.5 2021 978.2 974.4 984.0 977.9 982.0 978.1 984.9 984.9 971.2 974.6 971.7 971.4 2022 980.2 978.0 978.2 979.2 976.3 988.5 971.5 974.6 971.0 976.4 973.4 974.7 2023 976.8 981.1 981.6 989.2 978.1 985.6 982.3 984.1 976.2 973.2 979.8 975.9 2024 979.5 982.2 977.9 972.2 974.5 973.9 983.6 989.3 981.6 - - -