Halley_1_3 18Z msl_pressure 1957 993.7 989.4 987.1 988.9 993.3 987.0 984.1 993.8 990.6 990.0 993.8 997.3 1958 989.6 993.5 985.9 991.2 995.2 989.0 992.1 982.1 980.1 980.5 988.5 986.7 1959 988.3 986.1 989.7 986.4 986.9 996.3 984.1 993.1 986.9 981.7 976.8 991.5 1960 987.8 990.9 978.0 988.9 994.0 991.2 983.6 986.4 988.9 986.2 982.8 986.8 1961 992.8 998.2 992.1 990.3 988.0 995.3 991.1 988.7 993.5 972.1 984.5 984.2 1962 986.7 989.6 985.3 984.3 991.2 999.3 986.6 987.1 986.5 984.1 989.9 988.7 1963 984.4 988.7 980.9 990.2 995.8 986.3 988.6 997.3 991.2 987.5 980.9 991.6 1964 996.1 991.4 985.1 987.2 982.5 1004.9 1007.7 991.0 981.2 980.2 993.8 993.2 1965 995.7 1000.6 986.7 991.2 996.5 981.6 991.3 993.8 989.7 986.6 979.2 998.7 1966 989.5 993.6 993.3 977.0 994.0 990.6 992.3 979.9 981.7 982.9 991.3 991.5 1967 997.1 995.1 989.4 993.5 992.0 992.5 986.6 987.0 987.9 984.4 989.0 990.8 1968 992.2 993.9 993.4 992.7 993.7 985.9 987.7 984.7 982.3 989.9 992.2 993.3 1969 1000.2 993.2 986.0 989.0 989.5 989.5 986.6 987.4 986.8 983.1 985.6 992.4 1970 988.7 989.4 989.3 989.1 991.5 992.2 991.6 986.9 992.0 989.6 989.5 995.2 1971 994.8 990.8 986.6 991.2 997.2 989.2 993.4 990.5 986.8 983.0 986.4 994.3 1972 996.9 991.2 993.6 995.2 990.6 993.1 999.8 994.9 988.5 986.3 983.7 992.1 1973 994.7 989.9 981.1 983.4 993.6 995.9 983.9 988.8 986.5 987.6 983.8 986.7 1974 995.5 985.2 986.3 991.7 983.0 995.3 987.9 998.9 975.9 988.1 995.1 997.5 1975 995.2 989.7 986.1 982.3 990.6 988.4 993.7 984.9 982.5 980.5 984.8 991.6 1976 995.3 989.2 989.4 984.7 987.2 990.8 990.4 977.5 980.4 975.7 995.5 1005.4 1977 997.0 988.6 989.9 991.9 989.9 993.4 991.3 992.2 978.6 979.6 986.0 993.0 1978 989.3 986.1 988.0 988.0 992.4 989.6 993.9 978.2 981.1 984.8 988.6 988.7 1979 990.9 988.9 984.9 981.5 985.2 987.0 979.1 988.5 987.3 984.2 990.3 997.0 1980 990.9 993.9 989.2 991.4 988.9 987.0 992.7 990.5 993.3 984.4 989.0 993.8 1981 990.8 988.0 995.3 988.2 992.0 987.9 991.7 993.7 985.5 983.5 981.4 982.8 1982 991.6 989.2 982.8 979.3 984.5 990.4 987.4 982.8 976.7 986.4 988.6 999.2 1983 - - - - - - - - - - - - 1984 - - - - - - - - - - - - 1985 - - - - - - - - - - - - 1986 - - - - - - - - - - - - 1987 - - - - - - - - - - - - 1988 - - - - - - - - - - - - 1989 - - - - - - - - - - - - 1990 - - - - - - - - - - - - 1991 - - - - - - - - - - - - 1992 - - - - - - - - - - - - 1993 - - - - - - - - - - - - 1994 - - - - - - - - - - - - 1995 - - - - - - - - - - - - 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 - - - - - - - - - - - -