San_Martin 18Z station_level_pressure
1996   987.5   983.8   981.7   993.5   980.2   991.3   984.6   987.7   987.2       -   974.0       -
1997       -   990.7   985.3   983.6   995.9  1002.0   988.8   981.7   992.7   987.9   996.2   997.3
1998   983.7   991.8   987.3   982.3   998.7   991.5   973.5   980.3       -   976.3       -   979.9
1999   984.1       -       -   978.4   985.5   993.7   984.0   989.4   989.4   979.8   980.0   977.9
2000   977.3   990.1   999.1   981.0   992.7       -  1000.1   990.4   998.9   987.2   992.3   989.2
2001   988.2   989.5   984.9   983.7   993.4   991.1   996.5   973.0   984.7   973.8   973.7   976.3
2002       -   978.5   991.5       -   996.2   992.2   991.9   996.9  1001.2   986.9   988.7   984.8
2003   991.4   982.6   993.7   989.8   987.1   996.5   976.7       -       -       -       -   995.0
2004   985.1   992.6   983.5       -   988.8   988.9   985.3   986.3   976.9       -       -   989.9
2005   986.3       -   986.7   981.8   992.7   997.7       -       -       -       -   990.9       -
2006   990.4       -       -   988.4       -       -       -  1000.6   988.4       -       -   984.0
2007   991.1   987.9   988.1   991.2   995.1   992.6   995.5   982.7   989.7   981.7   989.7   981.4
2008   985.0   984.7   986.6   984.9       -   988.4   995.0   984.0   990.3   980.0       -       -
2009       -       -       -       -       -       -       -       -       -       -       -       -