Halley 00Z station_level_pressure
2001   987.2   989.3       -       -   990.0   982.1   985.3   976.9   979.8       -       -       -
2002       -   979.0   988.8       -   990.8   983.1   985.9   979.1   984.9   988.0       -   981.8
2003   993.9   987.5   985.9   979.5   981.6   991.3   984.9       -       -   984.0       -   991.4
2004   984.3   989.7       -       -       -       -       -       -       -       -       -   990.9
2005   986.3       -   984.0   978.9   986.8   991.4   985.0   982.2       -   982.6   985.7   995.5
2006       -   986.1   983.6   983.7       -   986.0       -   988.0   984.9   977.7   978.9   985.7
2007   987.2   985.0   985.0       -       -       -   994.3   983.4   990.4   981.7   984.3   978.1
2008   984.2   981.3   982.8       -   987.7   984.7   980.6   978.9   985.7   977.3   978.9   977.4
2009   981.4       -       -       -       -       -       -       -       -       -       -       -