Signy 18Z msl_pressure 1954 983.6 986.8 990.7 990.4 990.2 997.0 993.7 993.2 991.4 995.2 991.6 998.9 1955 993.1 986.9 988.5 987.4 993.5 991.1 993.0 997.9 997.9 995.3 983.8 989.2 1956 994.3 992.6 994.0 1001.7 1003.1 995.8 1000.1 1001.8 993.3 990.0 988.7 989.4 1957 990.2 997.0 986.6 994.7 991.0 989.4 988.3 1004.4 995.5 986.1 999.2 992.9 1958 988.9 995.0 996.2 991.5 993.5 991.8 1004.3 986.8 988.3 989.2 993.3 985.3 1959 982.9 985.6 991.6 990.2 985.9 1000.8 992.4 995.2 991.8 993.6 978.4 989.3 1960 991.9 993.7 991.4 983.7 992.3 998.6 991.4 986.2 998.4 991.4 977.5 991.5 1961 993.0 993.4 987.1 995.8 983.1 992.1 997.9 994.9 993.0 983.7 981.4 983.6 1962 993.6 991.1 989.1 992.2 1000.8 990.6 993.9 997.6 994.9 998.0 987.6 987.8 1963 983.4 989.2 982.4 989.7 993.0 993.5 996.8 998.7 996.6 987.1 995.0 991.4 1964 996.4 988.2 993.1 989.6 991.1 993.3 1009.5 987.3 996.9 992.5 991.2 998.3 1965 992.2 1000.6 997.6 991.4 987.8 989.6 996.5 1000.2 987.3 983.6 983.2 989.6 1966 990.9 988.3 990.6 991.4 989.2 997.4 994.7 992.1 990.1 990.2 992.8 990.9 1967 995.9 992.9 990.1 992.7 992.0 999.2 994.1 999.9 994.1 989.6 987.3 992.8 1968 987.8 992.1 992.1 996.6 988.9 988.3 989.5 991.1 990.4 992.5 989.9 991.2 1969 994.2 985.2 988.3 990.9 991.3 993.4 998.1 999.2 996.9 981.2 989.7 992.1 1970 - - - - - - - - - - - - 1971 - - - - - - - - - - - - 1972 - - - - - - - - - - - - 1973 - - - - - - - - - - - - 1974 - - - - - - - - - - - - 1975 - - - - - - - - - - - - 1976 - - - - - - - - - - - - 1977 - - - - - - - - - - - - 1978 - - - - - - - - - - - - 1979 - - - - - - - - - - - - 1980 - - - - - - - - - - - - 1981 - - - - - - - - - - - - 1982 - - - - - - - - - - - - 1983 - - - - - - - - - - - - 1984 986.1 990.5 995.5 986.7 990.8 997.2 1000.8 993.9 1003.5 992.3 984.7 1000.1 1985 997.6 985.8 990.2 990.9 997.3 1004.8 987.9 988.3 992.8 995.0 989.4 983.0 1986 984.9 987.8 992.3 990.7 997.3 987.7 985.9 989.3 986.8 993.1 982.7 985.3 1987 991.1 993.5 986.1 987.5 995.1 990.6 990.1 1000.5 989.1 988.9 985.8 990.1 1988 - - - - - - 994.7 997.6 995.3 1002.5 983.9 - 1989 991.5 993.0 994.0 - 990.4 987.5 1001.0 999.9 - 988.3 987.4 992.3 1990 993.8 993.2 988.8 985.0 1003.0 989.2 997.3 984.1 993.9 980.7 979.7 985.9 1991 - 994.2 991.8 993.8 987.4 990.0 992.3 991.2 - - 991.5 998.7 1992 994.1 987.2 - 999.1 997.3 999.6 997.6 994.4 992.9 989.2 995.4 1001.9 1993 996.6 993.8 988.6 989.1 993.7 992.7 998.5 990.6 986.0 984.9 990.2 985.3 1994 985.5 989.7 991.9 994.7 993.2 999.1 992.5 994.2 986.3 988.4 - 991.8 1995 997.9 996.0 986.7 997.7 996.1 987.7 - 995.5 - 996.1 985.0 985.9 1996 - - - - - - - - - - - - 1997 - - - - - - - - - - - - 1998 - - - - - - - - - - - - 1999 - - - - - - - - - - - - 2000 - - - - - - - - - - - - 2001 - - - - - - - - - - - - 2002 - - - - - - - - - - - - 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - - 2010 - - - - - - - - - - - - 2011 - - - - - - - - - - - - 2012 - - - - - - - - - - - - 2013 - - - - - - - - - - - - 2014 - - - - - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - - - - - - - - - - - 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -