Hi_Priestley_Gl 18Z pressure
1991   767.2   770.3   760.1   764.8   760.1   767.5   764.9   760.9   759.2   755.3   765.7   776.7
1992   771.8   773.8   763.9   760.8   764.4   769.6   761.1   764.0   752.3   756.1       -       -
1993       -   764.0   764.3       -       -       -       -       -       -       -   761.0   766.7
1994   768.9   763.1   756.0   761.8   757.2   771.1   764.8   749.6   764.9   757.0       -       -
1995       -       -       -       -   755.3       -       -       -       -       -       -       -
1996   768.8   768.8   764.7   759.2   757.1   756.4   760.6   762.9   764.0   749.9   768.6   768.9
1997   770.8   768.1   758.2   760.2   752.0   762.9   753.8       -       -       -       -   771.6
1998   766.9   764.8   757.9   752.7   758.3   756.0   755.2   754.7   759.4   758.6   756.2   767.0
1999   766.8   767.5   760.9   753.3   754.1   769.4   756.0   757.8   757.6   748.9   756.3   759.0
2000   761.9   763.4   761.8   760.0   759.3   762.1   762.9   762.1   766.5   752.6   763.7   774.1
2001   771.7   768.6   763.2   757.1       -       -       -       -       -       -   757.5   762.8
2002   768.5   761.3   768.8   758.5   768.4   767.9   765.2   757.0   762.9   763.8   762.3   762.3
2003   773.8   769.6   761.4   755.2   757.9   766.9   759.4   755.9   757.1   755.3   760.0   774.5
2004       -       -       -       -       -       -       -       -       -       -       -   773.8
2005   769.4   761.5   760.9   757.3   761.2   764.8   758.4   754.1   759.1       -       -       -
2006       -       -       -       -       -       -       -       -       -       -       -       -
2007       -       -       -       -       -       -       -       -       -       -       -       -
2008       -       -       -       -       -       -       -       -       -       -       -       -
2009       -       -       -       -       -       -       -       -       -       -       -       -