Halley_6 msl_pressure 2012 - - 986.5 991.8 989.2 987.0 989.4 986.4 985.2 979.3 990.1 992.0 2013 989.9 984.8 983.5 984.3 986.8 993.5 987.7 995.8 992.3 985.7 980.8 986.5 2014 993.6 989.3 987.4 990.0 993.7 992.4 984.5 988.1 995.6 984.6 984.0 982.8 2015 987.9 982.5 982.8 983.3 986.1 988.8 980.0 979.0 981.6 989.0 982.9 989.5 2016 984.7 985.6 978.5 982.0 982.3 983.4 982.5 988.2 978.7 982.3 991.3 993.1 2017 995.8 986.4 989.9 982.4 983.8 989.4 983.3 985.3 977.3 988.9 979.8 984.8 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -