McMurdo 18Z station_level_pressure 1956 - - - 989.5 988.3 987.2 988.2 989.9 979.0 976.7 983.1 993.4 1957 990.9 987.7 983.0 990.8 992.3 993.3 983.5 987.0 980.4 985.1 986.7 995.4 1958 987.7 987.4 993.4 994.8 990.2 995.5 991.6 985.5 975.5 980.6 981.8 983.0 1959 987.7 985.0 984.2 991.4 992.6 991.4 989.9 993.0 977.4 983.4 978.8 990.4 1960 990.0 988.7 979.8 990.5 986.6 984.1 982.5 990.4 975.7 979.5 985.0 985.0 1961 987.8 995.9 994.1 986.5 992.4 994.2 987.6 985.7 989.9 981.0 984.2 982.6 1962 985.1 989.0 991.5 982.2 983.8 997.6 978.7 988.1 990.8 981.6 988.3 986.2 1963 983.9 986.1 989.6 988.9 991.5 983.9 987.1 1003.3 987.2 981.4 977.0 990.6 1964 997.7 991.9 989.0 983.7 976.8 994.4 1001.9 997.1 977.4 977.8 990.3 991.8 1965 991.9 1002.4 988.0 986.4 999.5 991.5 989.7 984.5 986.7 984.7 979.2 993.4 1966 988.8 991.8 994.5 989.5 996.8 982.9 993.4 977.1 979.5 973.5 986.2 991.1 1967 996.2 994.1 989.8 993.7 990.3 987.0 988.3 979.6 982.7 982.5 992.1 989.8 1968 990.0 990.2 991.6 986.4 999.5 990.1 980.2 989.8 988.8 986.3 989.8 990.9 1969 1000.4 991.4 987.9 994.4 990.6 1001.4 981.6 980.3 986.2 985.9 982.5 988.0 1970 986.3 986.9 985.2 990.5 982.0 984.8 993.0 974.3 988.9 983.4 985.2 993.9 1971 992.1 987.3 983.9 987.0 994.4 985.6 991.9 990.2 983.0 987.4 984.5 993.0 1972 998.0 988.6 992.2 997.2 988.8 994.3 990.6 992.3 984.6 973.4 979.6 992.5 1973 995.2 988.8 982.5 989.7 996.3 991.3 985.2 980.0 981.8 977.9 984.4 984.2 1974 993.3 981.1 985.1 984.5 989.7 995.5 989.1 997.4 980.1 982.8 990.8 992.6 1975 993.7 989.0 988.1 983.8 996.7 991.7 992.2 982.7 975.3 977.8 985.2 992.4 1976 994.0 988.0 985.1 982.0 988.4 990.7 987.8 982.3 978.3 980.5 988.9 1002.9 1977 995.5 990.3 989.4 991.7 989.1 992.0 986.7 988.9 978.8 975.0 980.3 990.4 1978 989.0 - 989.0 991.9 987.9 990.4 999.0 982.2 981.8 981.1 985.2 987.3 1979 987.3 986.0 981.5 985.9 984.5 980.7 976.6 986.4 980.1 981.3 984.7 992.7 1980 991.0 991.0 989.3 991.5 987.1 982.9 992.3 987.1 991.6 974.5 992.8 987.2 1981 987.2 989.1 990.8 993.5 986.5 980.8 988.0 996.1 990.0 981.5 978.5 980.2 1982 991.6 987.9 978.6 981.3 987.6 981.2 990.5 977.4 976.7 981.2 986.3 995.9 1983 993.1 995.4 986.9 981.1 986.3 990.6 981.6 979.2 984.2 971.3 974.9 986.8 1984 995.8 990.1 980.7 982.0 989.6 982.4 976.8 986.0 982.5 974.4 980.2 994.1 1985 992.9 988.1 986.5 986.7 989.9 985.2 974.9 985.4 975.1 976.3 972.3 981.5 1986 988.7 994.7 992.8 982.9 995.0 992.6 982.7 - - 975.1 976.7 983.0 1987 995.1 989.2 - - - - - - 990.5 980.8 979.5 987.0 1988 990.8 985.8 - 985.7 992.5 996.8 979.3 977.6 - - - 984.2 1989 986.5 - - - - - - - - - - - 1990 - - - - - - - - - - - 985.7 1991 - - - - - - - - - - - - 1992 989.4 - - - - - - - - - - - 1993 - - - - - - - - - - - - 1994 - - - - - - - - - - - - 1995 - 983.8 - - - - - - - - - 979.5 1996 - - - - - - - - - 973.2 - 987.9 1997 - 991.4 - - - - - - - 979.2 991.3 992.5 1998 - 982.1 983.8 - - - - - - 982.9 976.1 984.1 1999 984.6 - - 984.7 - - 981.8 986.2 984.7 - - 976.7 2000 981.2 - - - - - - - - - 983.8 - 2001 992.6 990.8 - - 988.6 - - - - - - - 2002 - - 992.8 - 995.3 995.5 991.9 981.8 988.7 992.4 - 980.7 2003 - - - 979.4 980.4 994.8 982.0 - - 977.2 - 995.1 2004 986.7 - - - - 982.0 - - 985.3 - - 992.6 2005 988.4 981.0 985.7 982.8 - 992.1 985.2 - 979.5 974.7 982.6 997.7 2006 - 986.8 - 990.8 - - - - 986.8 - - - 2007 988.8 985.1 992.4 987.0 - - 999.5 981.1 980.8 - 984.4 978.0 2008 982.3 981.9 - 987.3 - - - 983.6 975.6 976.4 980.2 981.5 2009 982.3 987.0 983.6 985.6 991.7 992.4 992.6 991.2 984.7 978.6 - 983.4 2010 996.1 991.8 986.4 982.3 984.1 978.9 971.6 974.9 982.6 976.4 975.9 989.9 2011 991.8 986.1 991.5 990.0 980.0 988.7 986.4 988.8 990.9 979.3 987.3 977.3 2012 978.2 985.8 984.4 982.8 980.8 993.0 980.7 984.5 981.1 979.8 989.2 989.4 2013 987.4 979.6 977.5 985.0 984.9 996.1 981.5 991.9 991.8 983.3 981.0 985.5 2014 989.3 984.8 983.3 981.6 984.8 983.5 985.7 975.1 984.7 973.5 985.3 982.9 2015 985.0 978.5 983.4 981.2 986.6 986.5 977.0 978.2 976.8 979.9 977.0 986.0 2016 983.4 986.0 982.2 989.7 - 983.6 - 993.5 977.5 984.3 995.7 992.5 2017 997.1 992.5 992.9 - 981.6 986.7 985.0 980.9 982.5 987.6 980.4 988.2 2018 987.9 987.0 989.5 992.1 989.0 992.2 989.1 994.5 979.4 977.3 981.0 986.0 2019 990.1 991.7 989.9 987.3 991.2 977.5 993.7 987.5 977.6 987.8 992.3 998.3 2020 - 986.9 - 983.8 980.1 980.4 984.9 986.5 985.9 973.7 977.3 976.7 2021 981.6 978.9 986.3 982.4 984.6 982.5 989.4 990.1 975.9 981.3 976.0 974.9 2022 982.9 981.0 982.4 983.3 980.5 991.9 978.0 979.3 975.9 - 976.8 977.2 2023 978.9 984.5 986.0 992.8 983.0 991.7 985.6 988.1 981.8 977.7 982.9 - 2024 982.9 984.7 982.8 977.2 - - - - - - - -