Palmer 18Z msl_pressure 1976 - - - - - - - - - - - - 1977 - - - - - - - - - - - - 1978 - - - - - - - - - - - - 1979 993.1 988.3 993.2 979.9 998.7 989.8 987.3 986.0 990.7 983.2 993.6 996.0 1980 990.0 - - - - - - - 989.9 - - - 1981 988.8 980.6 997.8 - 992.2 994.2 993.7 986.6 989.6 988.1 977.9 993.3 1982 - 984.6 980.7 981.0 989.0 1000.1 988.8 994.8 992.0 988.2 989.7 992.5 1983 992.6 987.1 987.7 997.6 997.6 991.0 985.6 991.5 991.6 982.4 977.5 - 1984 - - - - 991.7 - 998.2 988.5 991.7 - - - 1985 993.0 983.8 988.7 986.5 994.9 1006.0 - - - - - 981.3 1986 984.8 988.1 988.0 987.9 997.6 - 984.4 983.3 986.2 - 982.1 - 1987 - - - - - - 991.6 - - 986.2 978.5 985.2 1988 992.6 986.8 986.1 - 997.6 993.3 990.6 - - 999.9 - - 1989 - - - - - - - 998.8 - - - 992.5 1990 - 990.6 984.0 992.2 1003.5 979.5 990.7 977.4 - - - - 1991 - - - - - - - - - - - - 1992 - - - - - - - - - - - - 1993 - - 987.1 - - - - 985.9 - - - - 1994 - - 992.6 992.3 - - - 984.6 - 989.8 - - 1995 - - - 988.1 - - - - - 991.7 983.1 - 1996 - - - - - - - - 991.0 - - - 1997 - - - 984.2 998.5 - - 983.5 - - - - 1998 - - - - - - - - - - - - 1999 - - - - - - - - - - - - 2000 - - - - - - - - - - - - 2001 - - - - 994.3 - - - - - - 981.1 2002 - - 992.1 986.2 994.8 991.8 - 1000.0 1002.3 987.7 989.9 988.4 2003 992.5 985.2 997.6 992.9 990.8 997.4 981.5 983.1 988.7 983.5 984.1 995.6 2004 985.8 996.5 987.1 992.0 993.9 989.5 989.3 989.8 978.7 988.4 992.5 991.1 2005 986.6 985.0 989.8 983.4 994.6 996.6 997.1 992.3 999.1 990.6 992.3 994.9 2006 992.0 995.6 977.6 - - 997.3 993.6 999.9 989.8 987.9 981.6 984.3 2007 991.3 987.6 988.4 991.1 998.0 991.8 994.0 985.0 994.7 982.4 990.1 983.1 2008 986.6 987.2 988.6 985.5 990.5 989.7 995.1 988.8 997.2 981.9 982.3 981.5 2009 982.4 986.1 986.1 990.1 985.8 988.2 993.0 1000.4 987.5 976.2 985.4 987.0 2010 990.1 994.3 986.8 983.7 983.5 984.6 990.9 990.1 989.1 982.4 984.1 981.3 2011 992.2 987.6 990.0 985.9 987.2 991.5 999.4 1004.1 992.4 984.6 986.5 984.6 2012 984.9 983.2 989.3 993.9 992.0 975.9 986.8 986.2 992.9 981.7 985.4 994.0 2013 987.7 988.3 995.8 984.0 986.2 979.3 984.7 989.7 997.2 982.0 979.3 988.0 2014 991.2 989.3 982.7 995.6 992.1 991.4 992.4 996.1 - 980.2 979.7 983.6 2015 989.9 986.1 986.6 987.5 989.6 982.9 985.4 982.8 983.9 992.1 981.9 986.4 2016 988.4 986.0 983.2 987.7 1004.5 989.9 996.6 994.3 989.0 992.5 984.8 992.3 2017 987.5 993.9 - 994.6 989.4 986.7 984.3 987.7 978.6 984.8 989.8 981.1 2018 987.1 985.9 981.6 989.2 991.7 995.7 995.0 989.5 991.0 996.8 - 980.7 2019 986.4 993.0 991.1 986.3 990.5 994.8 1003.4 997.7 992.0 989.4 989.5 995.0 2020 991.7 996.2 986.9 989.2 999.4 995.6 - 993.0 988.7 985.2 983.0 984.5 2021 987.6 987.7 986.0 988.0 996.4 996.5 993.3 986.0 983.6 978.8 986.1 982.8 2022 989.6 988.6 995.0 989.1 993.7 986.4 990.4 992.3 987.2 979.7 980.5 985.9 2023 984.6 988.6 981.8 987.1 983.3 995.2 994.6 987.7 997.4 981.4 982.7 987.3 2024 986.3 988.5 990.7 978.2 - - - - - - - -