Port_Martin 18Z pressure
1991       -   985.6   978.9   987.5   980.7   988.7   991.9   980.5   981.9   973.5   982.9   990.9
1992   985.8   991.2   983.9   984.3   987.9   994.5       -       -       -       -       -       -
1993   990.1   983.8   984.6   981.3   974.6   975.5       -       -       -   972.5   974.6   980.8
1994       -       -       -       -       -       -       -       -       -   978.4   981.7   978.8
1995   982.5   981.5       -       -       -       -       -       -       -       -       -   977.2
1996   989.9   989.2       -       -       -       -       -       -       -       -       -   987.9
1997   987.5       -       -       -       -       -       -       -       -       -       -       -
1998       -       -       -       -       -       -       -       -       -       -       -       -
1999       -       -       -       -       -       -       -       -       -       -       -       -
2000   980.8   984.3   985.2   984.9   978.0   987.5   989.1   994.0   987.8   975.5   989.4   991.6
2001   986.1   985.8   988.6   984.2   993.2   983.8   995.1   984.0   980.3   977.6   982.5   981.9
2002   988.7   980.0   988.5   984.6   995.4   990.8   990.9   984.3   981.6   989.5   984.6   980.1
2003       -       -       -       -       -       -       -       -       -       -       -       -
2004       -       -       -       -       -       -       -       -       -       -       -       -
2005       -       -       -       -       -       -       -       -       -       -       -       -
2006       -       -       -       -       -       -       -       -       -       -       -       -
2007       -       -       -       -       -       -       -       -       -       -       -       -
2008       -       -       -       -       -       -       -       -       -       -       -       -
2009       -       -       -       -       -       -       -       -       -       -       -       -