McMurdo 00Z msl_pressure 1956 - - - 991.9 991.4 991.3 990.9 994.3 983.0 979.9 986.3 996.9 1957 994.7 991.5 986.0 993.7 996.1 997.0 987.4 990.4 983.7 988.4 989.7 998.7 1958 990.9 990.7 996.5 997.8 993.8 998.6 995.5 989.1 980.6 983.2 984.4 986.1 1959 991.0 988.0 988.2 994.4 995.5 995.6 992.5 997.3 980.1 987.0 982.1 993.1 1960 993.6 992.5 982.9 994.5 989.6 988.1 986.7 993.6 979.0 983.7 987.9 988.4 1961 991.1 999.2 997.2 990.4 995.6 997.4 991.6 988.8 994.0 983.9 987.4 986.0 1962 988.2 992.8 994.6 985.6 987.4 1000.2 982.6 990.3 994.7 985.1 991.5 989.1 1963 987.5 989.4 992.9 992.2 995.2 987.9 989.6 1006.3 991.4 983.8 980.6 992.6 1964 1001.3 995.2 992.4 987.0 980.5 997.0 1005.7 1001.3 980.2 982.2 992.9 995.3 1965 995.3 1005.3 992.4 989.3 1003.8 995.1 992.8 988.9 990.1 988.2 982.7 996.3 1966 992.2 995.0 998.2 993.1 1000.9 986.0 997.8 980.1 983.5 977.1 988.9 994.3 1967 999.9 997.1 993.5 997.2 993.6 990.9 991.8 982.8 986.4 985.8 995.5 993.4 1968 993.5 993.4 995.1 989.6 1003.4 993.5 984.3 993.1 992.9 989.6 993.7 994.1 1969 1004.0 994.8 991.9 997.8 994.9 1004.7 985.9 984.5 988.9 989.6 986.0 991.1 1970 989.5 990.1 989.1 994.5 986.0 988.2 996.8 978.6 992.1 987.6 988.7 997.1 1971 996.1 992.1 988.9 990.0 999.7 990.3 995.7 995.0 987.1 992.0 988.9 997.5 1972 1002.4 993.4 996.3 1002.1 993.3 998.1 994.7 996.8 989.2 977.9 983.8 996.6 1973 999.7 993.9 986.7 993.9 1000.5 995.4 989.7 984.3 986.5 982.4 989.1 988.1 1974 998.1 985.5 989.2 989.5 993.0 1000.5 993.3 1001.7 984.8 986.9 994.4 996.9 1975 998.5 992.7 992.7 987.7 1000.4 995.6 996.6 987.0 979.6 981.9 989.2 996.6 1976 998.3 992.1 989.5 986.0 992.7 994.2 991.9 987.1 982.7 984.7 992.4 1007.4 1977 1000.1 994.7 994.2 995.9 993.1 997.6 991.1 993.3 984.3 979.1 984.7 994.9 1978 993.1 - 993.4 996.3 992.8 994.6 1004.4 987.5 987.0 985.2 989.9 991.4 1979 991.7 990.6 986.4 989.4 989.7 985.0 980.8 991.6 984.7 986.0 988.8 997.0 1980 995.0 995.7 993.7 996.2 991.3 986.9 997.5 991.9 996.1 979.3 996.9 991.6 1981 991.1 993.6 996.0 997.6 991.7 984.3 992.9 1001.0 993.6 986.6 982.3 984.2 1982 995.9 992.2 982.9 986.3 992.3 986.1 995.5 981.3 982.7 985.7 989.4 1000.1 1983 997.7 1000.3 991.0 985.6 991.4 994.3 987.5 983.4 989.8 975.7 978.5 991.2 1984 999.9 995.6 985.0 985.8 993.5 986.8 981.3 991.2 987.4 978.7 984.3 998.5 1985 997.5 992.1 991.1 991.7 994.0 990.0 980.1 989.6 980.3 980.4 976.7 985.7 1986 993.5 998.8 998.1 987.6 998.7 997.2 987.3 989.8 985.1 979.7 980.9 987.4 1987 999.2 994.0 - - - - - - 994.4 987.7 984.2 991.4 1988 994.9 990.2 - 989.8 996.9 1001.9 985.6 983.9 - - 987.3 - 1989 991.1 - - - - - - - - - - - 1990 - - - - - - - - - - - - 1991 - - - - 994.5 997.3 - - - - - - 1992 - - - - - - - - - - - - 1993 - - - 988.3 990.2 - - - - - - - 1994 - - 985.3 - - 1005.0 996.6 982.6 - - - - 1995 - 987.9 997.1 990.7 988.3 995.5 1007.7 994.0 - 986.1 984.5 983.7 1996 992.0 996.6 991.3 986.1 - 989.8 - - - 978.9 - 991.7 1997 994.7 996.0 987.3 - - - - - 987.4 984.2 994.4 996.9 1998 991.7 987.0 988.0 983.9 - - - 985.4 - 987.4 981.2 987.4 1999 989.6 993.5 991.4 988.2 985.7 1005.9 986.3 991.0 989.3 972.7 978.5 981.4 2000 984.5 989.8 990.9 990.5 990.4 993.4 989.2 991.4 996.7 983.0 988.0 1001.8 2001 997.0 994.9 991.2 987.0 992.0 989.8 994.2 989.9 986.8 980.0 982.7 982.8 2002 989.3 984.1 996.7 989.2 998.8 1001.0 995.4 985.6 993.0 996.1 990.0 984.8 2003 996.8 995.8 991.4 984.8 984.9 1000.0 986.7 984.7 987.0 980.7 988.7 999.0 2004 990.7 1000.6 990.8 985.3 989.0 986.1 985.3 988.8 989.3 986.9 983.4 996.5 2005 992.9 985.5 990.5 986.9 987.7 997.1 989.1 984.8 984.6 979.4 986.2 1001.4 2006 992.3 991.3 992.3 994.5 983.8 988.5 984.5 997.7 990.4 982.7 985.4 989.3 2007 992.6 989.3 996.0 991.5 993.8 992.8 1004.0 986.6 985.2 988.4 988.2 982.5 2008 986.4 986.1 990.6 992.1 990.2 984.1 986.7 988.3 979.8 979.9 984.4 985.7 2009 986.3 991.5 987.9 989.6 996.4 996.5 996.9 994.1 989.5 983.2 988.6 987.3 2010 1000.7 996.1 990.4 986.7 988.6 983.1 975.4 979.7 986.7 980.8 979.7 993.9 2011 996.3 990.8 996.0 994.7 984.8 993.1 990.8 993.4 995.2 984.4 992.0 981.5 2012 983.0 990.0 988.9 987.7 985.7 997.3 986.0 989.4 986.2 983.8 994.0 993.8 2013 992.0 984.3 981.5 956.5 989.6 1000.7 986.8 996.4 996.3 988.2 985.7 989.4 2014 993.7 989.5 988.7 986.4 989.2 987.9 990.2 980.6 989.4 978.2 989.9 987.3 2015 989.6 982.6 988.0 986.7 990.8 990.6 982.1 982.7 981.1 983.0 981.6 990.2 2016 - - 984.7 990.4 - 983.8 - - - - 996.4 - 2017 - - - - 982.8 - - 981.2 - - 980.7 988.8 2018 988.1 987.6 989.5 993.4 990.4 993.3 989.8 996.5 978.9 - - - 2019 - 993.1 990.7 987.8 991.1 979.0 993.6 987.4 978.5 987.6 996.5 999.1 2020 - 988.0 - - 985.5 983.9 989.5 991.8 - 978.2 981.8 981.3 2021 985.7 983.3 - 986.9 989.5 987.8 994.0 994.8 981.3 985.6 980.4 979.1 2022 987.6 985.7 987.0 987.9 984.6 997.2 981.8 984.6 980.4 - 981.4 981.9 2023 982.9 989.0 991.0 998.0 986.7 995.2 991.0 992.4 986.4 981.8 986.9 - 2024 987.4 989.4 988.0 981.6 - - - - - - - -