Priestley_Gl 18Z pressure 1988 - 911.9 - - - - - - - - - 911.4 1989 - 911.5 911.4 914.3 899.1 906.1 906.4 909.9 909.4 903.2 904.7 917.0 1990 916.0 908.2 910.8 918.0 920.9 913.1 920.1 906.4 897.2 907.6 910.7 912.3 1991 909.6 915.4 906.7 912.3 - - - - 907.2 - - 921.4 1992 914.9 919.7 910.9 909.0 913.5 918.2 907.7 908.8 899.7 904.7 - 910.1 1993 - 905.9 910.7 907.0 906.5 901.3 899.0 901.0 901.9 901.2 906.7 909.5 1994 912.5 908.8 903.5 911.3 909.1 923.6 913.1 - - - - 908.4 1995 909.2 - 915.6 908.0 905.5 914.8 924.6 911.0 902.8 906.2 906.7 - 1996 914.3 917.3 912.3 906.6 910.8 908.2 909.4 914.1 915.1 898.9 - 922.3 1997 924.6 923.7 912.8 919.2 909.1 - - - - - - 919.5 1998 912.6 909.8 908.2 901.2 909.4 908.0 906.6 904.3 911.4 906.7 909.1 911.0 1999 911.7 914.4 910.1 904.7 904.3 - - - - - 901.1 903.2 2000 906.8 910.0 910.8 909.8 908.3 909.9 909.6 908.7 912.7 - - 921.7 2001 916.8 915.8 909.6 904.7 911.0 908.7 912.6 905.7 905.1 899.4 904.1 905.4 2002 911.4 905.9 916.4 906.7 917.9 916.7 912.9 902.1 911.5 914.7 909.3 906.3 2003 917.9 916.7 910.9 902.7 904.8 917.2 - - - - 908.3 920.1 2004 911.9 919.7 907.5 905.7 906.1 905.5 900.4 907.0 907.7 906.3 905.9 918.5 2005 914.5 907.0 909.0 905.4 908.3 913.7 - - - - 908.1 923.6 2006 914.6 913.1 912.7 913.7 902.9 908.3 904.1 918.4 910.1 - - 883.5 2007 888.4 882.2 886.8 881.9 884.7 883.6 892.5 876.6 875.9 877.5 881.9 878.5 2008 - - - - - - - - - - 877.5 882.1 2009 882.0 883.5 878.8 881.2 885.4 886.5 886.1 - - - - 883.0 2010 894.7 888.7 881.7 877.7 878.5 873.7 866.4 871.0 875.5 873.9 - - 2011 - - - - - - - - - - - 909.2 2012 909.1 - - - - - - - - - - 888.8 2013 886.8 877.5 874.8 878.1 880.0 889.7 - - - 879.5 879.6 886.7 2014 - - - - - - - - - - - 883.0 2015 885.7 879.3 880.1 876.6 881.6 881.5 - - - 877.2 877.6 887.4 2016 881.5 882.0 877.4 880.2 881.7 874.7 - - - 878.0 892.3 890.2 2017 893.8 889.2 887.2 881.2 876.6 879.6 - - - 881.5 877.1 885.9 2018 886.0 884.1 885.3 886.6 882.0 886.0 - - - 875.0 879.1 883.0 2019 883.8 885.2 881.1 877.4 882.2 867.9 - - - 878.3 890.2 894.2 2020 890.8 883.3 877.5 881.0 877.1 877.0 - - - 872.3 877.5 879.4 2021 883.5 879.3 884.8 876.8 880.3 - - - - 880.6 877.1 877.7 2022 884.5 882.5 881.8 880.7 879.9 887.9 - - - - - - 2023 880.3 885.8 884.6 889.2 878.5 888.4 879.5 881.9 880.4 875.0 882.5 880.3 2024 884.0 883.7 880.9 874.7 875.1 876.0 887.5 890.4 882.2 883.6 875.2 890.6 2025 889.0 886.1 879.9 876.1 882.4 883.1 881.7 877.7 881.1 882.5 - - 2026 - - - - - - - - - - - -