Halley_6 00Z msl_pressure 2012 - - 986.9 991.9 989.3 986.5 989.6 986.7 985.5 979.7 990.1 992.0 2013 990.2 985.0 983.8 984.0 986.7 993.8 988.1 995.7 992.3 986.4 980.8 986.4 2014 993.6 989.5 987.6 990.1 993.7 992.5 984.4 988.3 996.1 985.0 984.0 982.6 2015 988.1 982.5 983.1 983.5 986.5 988.6 980.1 979.0 982.0 989.4 983.0 989.6 2016 984.8 985.4 978.3 982.1 982.5 983.4 982.8 988.4 978.1 982.7 991.4 993.2 2017 995.8 986.2 990.3 982.7 983.8 989.6 983.7 985.4 977.8 989.0 979.8 984.8 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -