McMurdo 12Z msl_pressure 1956 - - - 992.6 991.2 990.7 991.3 993.9 982.3 979.9 986.3 996.8 1957 994.5 991.2 986.3 994.2 995.5 997.2 987.1 990.2 983.6 988.2 989.9 998.7 1958 991.0 990.7 996.7 997.8 993.7 998.9 995.1 989.1 979.1 983.6 984.8 986.1 1959 990.9 988.2 988.1 995.0 995.8 995.2 993.1 996.5 980.5 986.8 981.9 993.4 1960 993.3 991.9 982.9 994.0 989.9 987.3 986.0 993.6 978.5 983.0 988.1 988.0 1961 990.6 999.1 997.3 990.2 995.7 997.2 991.1 989.6 993.4 984.3 987.2 985.7 1962 988.1 992.2 994.6 985.5 987.3 1000.6 981.9 991.3 994.4 984.4 991.5 988.8 1963 987.0 989.8 992.8 992.2 994.9 987.2 990.4 1006.5 990.7 984.3 980.3 992.6 1964 1001.0 995.2 992.3 986.7 980.2 998.0 1005.1 1001.1 979.4 981.2 993.5 995.3 1965 995.3 1005.8 991.8 990.0 1003.4 995.1 993.1 988.8 990.1 988.1 982.3 996.3 1966 992.0 994.8 998.0 992.7 1000.6 986.1 996.8 980.0 982.8 976.7 989.0 994.2 1967 999.8 997.2 993.5 997.3 993.7 990.6 992.1 983.0 987.0 985.7 995.5 993.1 1968 993.4 993.5 995.0 989.9 1002.5 993.6 983.7 993.4 992.9 989.8 993.3 994.3 1969 1003.9 994.7 991.7 997.7 994.1 1005.0 985.7 984.0 989.6 989.3 985.8 991.2 1970 989.6 990.0 989.2 994.1 985.1 987.9 996.6 977.7 992.0 986.5 988.6 997.3 1971 995.7 991.8 988.3 990.9 998.9 990.4 995.9 994.5 987.5 991.9 988.7 997.6 1972 1002.5 992.9 996.6 1001.8 993.0 998.3 994.9 996.6 989.1 977.7 984.0 996.7 1973 999.5 993.4 986.7 994.0 1000.3 995.5 989.4 984.2 986.2 981.9 988.9 988.3 1974 997.7 985.5 989.4 988.8 993.7 1000.1 993.3 1001.5 984.3 987.0 994.6 996.8 1975 998.1 993.0 992.5 987.7 1000.6 995.4 996.0 987.1 979.3 981.6 989.3 996.5 1976 998.1 991.9 988.9 985.9 992.7 994.8 991.6 986.2 982.5 984.6 992.6 1007.3 1977 999.8 994.5 994.0 996.1 993.9 996.8 991.1 993.8 983.4 978.7 984.3 995.0 1978 993.0 - 993.2 996.5 992.0 995.0 1004.4 987.3 986.4 985.1 989.5 991.5 1979 991.7 990.7 985.8 989.7 989.5 984.7 980.8 991.1 984.5 985.6 989.0 997.1 1980 995.1 995.5 994.0 996.7 991.3 987.6 997.4 991.5 996.1 979.4 997.0 991.4 1981 991.5 993.7 995.5 997.4 991.3 985.2 992.5 1001.0 994.4 985.8 982.6 984.3 1982 995.9 991.9 983.0 985.8 992.0 985.9 995.0 981.5 981.6 985.5 990.1 1000.3 1983 997.3 1000.1 990.9 985.9 991.3 995.1 986.5 983.4 989.1 975.2 979.0 991.1 1984 1000.0 995.0 985.2 986.4 993.7 986.9 981.0 990.8 986.9 978.8 984.4 998.3 1985 997.6 992.2 990.8 991.4 994.0 989.1 979.8 989.4 979.6 980.8 976.7 985.8 1986 993.3 998.9 998.4 987.7 1000.1 997.8 986.9 989.4 985.0 979.7 981.2 987.5 1987 998.9 993.7 - - - - - - 996.0 986.9 984.1 991.5 1988 994.7 990.6 - 990.1 996.3 1002.0 983.8 - - - 986.5 989.5 1989 991.1 - - - - - - - - - 982.6 - 1990 994.8 - - - - - - - - - - - 1991 - 994.3 - - - - - - - - - 1000.8 1992 993.9 - - - - - - - - 985.3 - - 1993 - - 991.4 987.7 990.1 - - - - - - - 1994 - - 984.5 993.1 - 1004.3 996.2 982.2 - - - - 1995 - - 997.7 990.9 987.8 995.4 1008.4 - - 987.0 - 984.1 1996 - - - - - - - - - 978.3 - 991.7 1997 994.6 995.6 - - - - - - 987.4 983.8 995.1 - 1998 990.9 987.1 - - - - - 985.5 995.6 987.7 981.0 987.4 1999 988.9 993.5 991.0 987.9 985.4 1006.4 985.6 990.9 989.2 972.0 979.1 - 2000 984.8 988.9 990.8 990.4 990.9 992.4 990.5 991.7 996.2 983.1 988.7 1001.9 2001 996.8 994.8 991.0 986.2 992.3 989.7 994.7 990.6 986.7 979.7 982.4 982.8 2002 989.1 983.9 996.9 988.7 998.9 1001.1 995.8 985.6 993.3 996.3 989.9 984.7 2003 996.9 995.9 991.9 984.5 984.8 999.6 986.5 984.5 987.0 980.8 988.7 999.4 2004 990.7 1000.5 990.8 986.0 989.0 985.9 984.8 989.3 990.0 986.5 983.3 996.6 2005 992.7 985.7 989.9 986.7 987.8 996.1 989.1 984.7 984.9 979.1 986.2 1001.7 2006 992.2 991.1 991.9 - 983.5 988.5 985.0 997.5 990.4 982.2 985.3 989.0 2007 992.7 989.1 996.0 991.2 993.2 993.4 1003.6 986.1 985.0 988.4 988.3 982.3 2008 986.3 986.1 990.3 991.7 989.9 984.1 986.5 988.3 979.3 980.4 984.2 985.8 2009 986.2 991.2 987.7 989.6 995.9 996.3 996.2 994.4 989.0 982.6 989.0 987.4 2010 1000.4 995.5 990.6 986.7 988.2 982.9 975.6 979.1 986.6 980.3 979.7 994.2 2011 996.1 990.6 996.1 994.5 984.4 992.8 990.9 993.8 995.9 984.5 992.4 981.5 2012 982.5 990.3 988.9 987.6 985.5 997.6 986.0 989.1 985.7 984.1 993.7 993.6 2013 991.7 984.2 982.2 989.6 989.7 1000.8 986.4 997.0 996.2 988.6 985.5 989.6 2014 993.7 989.3 988.1 986.3 989.3 987.8 990.2 980.1 989.7 977.7 989.6 987.3 2015 989.3 982.5 987.8 986.0 990.9 990.9 981.4 983.1 981.5 984.2 981.1 990.5 2016 - - - - - 983.0 - - - - - - 2017 - - - 987.7 982.4 - - 981.1 - - 980.6 988.8 2018 988.5 987.6 990.9 993.0 990.3 992.8 989.3 996.2 977.5 - - - 2019 - - 990.2 987.7 991.8 978.3 994.3 987.1 978.6 988.1 996.6 999.2 2020 - 987.5 - - 985.6 985.1 989.0 990.8 - 978.4 981.7 981.1 2021 985.9 983.3 - 987.2 989.2 988.3 994.0 994.5 979.8 985.4 980.5 979.1 2022 987.3 985.3 986.8 988.0 984.8 996.8 982.2 984.2 981.0 - 981.8 981.4 2023 983.2 989.0 990.9 998.1 987.6 995.8 991.0 993.2 985.9 982.1 987.2 - 2024 987.4 989.3 987.0 982.1 - - - - - - - -