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       -       -       -       -       -       -   688.4       -       -       -       -       -
2004       -       -       -       -       -       -       -       -       -       -       -       -
2005       -   691.9   693.3   689.2   691.4       -   686.4       -       -       -   691.9   706.8
2006   698.6       -       -       -       -       -       -       -       -       -       -       -
2007       -       -       -       -       -       -       -       -       -       -       -       -
2008       -       -       -       -       -       -       -       -       -       -       -       -
2009       -       -       -       -       -       -       -       -       -       -       -       -