Henry 06Z pressure 1993 - 690.3 690.6 688.1 684.3 684.1 682.0 - - - 692.9 691.1 1994 697.9 689.9 685.3 692.0 684.8 701.0 685.6 - - - 695.3 690.2 1995 691.2 692.0 691.5 686.0 682.1 690.9 695.7 686.5 - - 693.5 693.2 1996 698.1 698.5 688.6 691.3 687.3 687.8 685.2 696.8 - - 697.2 699.8 1997 697.9 692.1 683.7 689.4 683.7 689.2 679.2 684.1 - - 702.1 697.0 1998 696.5 693.8 688.7 678.6 685.5 690.0 684.3 682.7 - - 687.8 693.0 1999 700.7 695.0 691.4 682.2 685.6 698.3 685.6 684.7 - - 689.9 688.7 2000 691.0 690.8 691.3 689.9 686.3 691.6 687.5 686.9 - - 697.3 701.2 2001 697.2 698.1 688.7 685.8 691.0 689.7 689.6 679.6 - - 691.4 692.8 2002 696.4 690.6 694.8 689.6 696.6 687.6 690.8 679.3 - - 688.8 690.4 2003 702.6 697.8 689.0 686.0 690.1 692.1 686.0 - - 686.8 689.3 704.5 2004 694.6 698.6 685.7 690.5 687.8 682.8 673.1 - - - 691.4 701.4 2005 700.3 690.4 691.8 687.5 689.0 692.2 684.2 - - - 689.9 706.2 2006 697.6 693.4 690.5 690.5 681.0 687.3 679.8 - - 679.9 691.4 692.7 2007 700.2 690.9 691.2 690.3 694.4 694.1 698.1 - - - 691.8 691.4 2008 - 688.8 691.7 693.4 690.3 686.8 684.8 680.1 687.0 684.0 687.2 692.7 2009 693.2 690.6 688.3 690.8 693.6 693.8 687.8 686.6 687.4 684.6 696.6 693.3 2010 702.4 697.7 693.0 688.2 689.0 684.0 676.2 682.6 683.4 685.7 687.2 700.1 2011 698.8 694.9 691.8 690.8 685.4 690.8 693.2 695.4 686.9 689.4 698.6 690.0 2012 688.9 693.6 691.2 686.9 687.9 690.4 684.6 684.2 685.9 685.6 696.8 698.5 2013 697.0 688.4 687.5 686.5 685.5 695.2 684.9 694.3 695.0 690.0 691.4 694.1 2014 699.1 691.5 688.1 687.6 695.4 689.7 682.2 687.1 694.2 686.4 690.5 691.8 2015 696.2 690.3 686.4 684.3 685.4 687.2 678.6 680.1 678.6 690.4 689.9 695.4 2016 691.0 692.5 683.7 685.5 687.2 681.1 682.3 691.4 679.4 - - 699.6 2017 702.1 695.3 692.6 687.1 687.7 686.9 - - - - - - 2018 - - - - - - - - - - - - 2019 693.3 696.7 691.0 690.2 694.6 680.4 689.3 686.1 682.3 689.2 700.1 702.6 2020 698.5 693.4 686.2 690.2 686.9 688.0 685.8 690.2 686.5 683.7 689.4 691.9 2021 693.1 689.3 693.3 681.4 687.6 686.8 691.0 682.8 683.2 687.7 687.4 689.7 2022 695.5 693.9 689.3 687.3 691.4 694.7 684.0 686.6 683.3 688.3 683.2 690.0 2023 688.6 693.6 690.7 696.6 686.8 693.7 682.3 683.0 691.4 684.3 691.8 691.5 2024 694.7 689.0 688.3 684.0 685.4 687.6 691.8 695.6 686.4 - - -