Marion 18Z station_level_pressure
2003  1001.1  1006.1  1009.5  1012.0       -  1006.1  1003.3       -       -       -       -  1000.8
2004       -  1007.9  1003.3       -       -  1007.6       -       -  1006.2       -       -  1002.8
2005  1002.6  1007.4       -       -  1004.7       -       -  1001.6       -       -  1004.3       -
2006  1002.0  1001.9  1004.3  1002.8       -  1006.1  1009.2  1009.9  1003.6  1010.3  1003.2  1000.7
2007  1002.6  1006.7       -  1005.3       -       -  1000.0  1006.0  1001.5  1008.9   999.3  1008.4
2008  1002.5  1006.0  1009.6  1001.9  1007.6  1013.4  1010.4  1006.0       -  1005.9  1003.6  1002.1
2009  1004.9       -       -       -       -       -       -       -       -       -       -       -