2400300,ALERT                                     ,NU  , monthly mean of homogeneous sea level pressure, (hPa), updated to December 2014
Year,    Jan, ,    Feb, ,    Mar, ,    Apr, ,    May, ,    Jun, ,    Jul, ,    Aug, ,    Sep, ,    Oct, ,    Nov, ,    Dec, , Annual, , Winter, , Spring, , Summer, , Autumn
1953, 1016.6, , 1016.2, , 1019.6, , 1025.6, , 1021.1, , 1009.7, , 1009.2, , 1011.4, , 1012.8, , 1013.6, , 1010.6, , 1008.1, , 1014.5, , 1016.4, , 1022.1, , 1010.1, , 1012.3,  
1954, 1015.0, , 1008.9, , 1020.8, , 1021.7, , 1025.0, , 1016.5, , 1011.3, , 1015.2, , 1015.5, , 1008.8, , 1009.9, , 1008.6, , 1014.8, , 1010.7, , 1022.5, , 1014.3, , 1011.4,  
1955, 1022.9, , 1022.2, , 1026.4, , 1020.2, , 1022.4, , 1016.2, , 1006.5, , 1005.2, , 1013.3, , 1014.1, , 1023.9, , 1019.2, , 1017.7, , 1017.9, , 1023.0, , 1009.3, , 1017.1,  
1956, 1018.4, , 1016.6, , 1012.5, , 1023.0, , 1016.0, , 1014.6, , 1010.8, , 1014.4, , 1019.4, , 1012.1, , 1012.0, , 1006.5, , 1014.7, , 1018.1, , 1017.2, , 1013.2, , 1014.5,  
1957, 1005.2, , 1023.0, , 1025.6, , 1022.2, , 1026.4, , 1019.0, , 1014.4, , 1011.1, , 1016.4, , 1006.5, , 1016.6, , 1016.8, , 1016.9, , 1011.6, , 1024.7, , 1014.8, , 1013.2,  
1958, 1015.7, , 1022.9, , 1029.5, , 1021.0, , 1022.0, , 1021.3, , 1017.9, , 1021.2, , 1011.3, , 1012.7, , 1015.0, , 1022.2, , 1019.4, , 1018.5, , 1024.1, , 1020.1, , 1013.0,  
1959, 1028.5, , 1003.0, , 1011.7, , 1021.6, , 1020.4, , 1017.1, , 1011.9, , 1018.0, , 1012.1, , 1012.1, , 1018.5, , 1010.4, , 1015.4, , 1017.9, , 1017.9, , 1015.7, , 1014.3,  
1960, 1021.4, , 1031.3, , 1024.9, , 1024.4, , 1020.1, , 1017.4, , 1012.4, , 1018.2, , 1013.6, , 1019.3, , 1015.6, , 1015.6, , 1019.5, , 1021.0, , 1023.1, , 1016.0, , 1016.2,  
1961, 1015.9, , 1010.3, , 1025.5, , 1026.4, , 1019.7, , 1011.4, , 1010.8, , 1011.9, , 1012.5, , 1013.7, , 1015.5, , 1021.8, , 1016.3, , 1013.9, , 1023.9, , 1011.3, , 1013.9,  
1962, 1011.3, , 1021.9, , 1037.4, , 1017.6, , 1020.9, , 1016.1, , 1017.3, , 1012.5, , 1009.4, , 1016.9, , 1013.9, , 1014.3, , 1017.5, , 1018.3, , 1025.3, , 1015.3, , 1013.4,  
1963, 1021.3, , 1023.6, , 1015.3, , 1023.5, , 1016.9, , 1016.5, , 1015.6, , 1010.9, , 1010.2, , 1006.8, , 1017.9, , 1019.3, , 1016.5, , 1019.7, , 1018.6, , 1014.3, , 1011.6,  
1964, 1009.6, , 1012.7, , 1013.8, , 1017.5, , 1018.9, , 1009.4, , 1002.0, , 1018.7, , 1017.3, , 1012.0, , 1019.6, , 1013.7, , 1013.8, , 1013.9, , 1016.7, , 1010.0, , 1016.3,  
1965, 1015.8, , 1018.8, , 1023.0, , 1017.7, , 1021.7, , 1016.1, , 1014.1, , 1014.0, , 1014.0, , 1010.5, , 1025.8, , 1014.1, , 1017.1, , 1016.1, , 1020.8, , 1014.7, , 1016.8,  
1966, 1027.8, , 1021.7, , 1028.0, , 1024.8, , 1018.6, , 1008.9, , 1012.3, , 1017.2, , 1015.3, , 1021.9, , 1015.0, , 1014.5, , 1018.8, , 1021.2, , 1023.8, , 1012.8, , 1017.4,  
1967, 1019.5, , 1010.9, , 1013.3, , 1014.0, , 1018.4, , 1011.4, , 1009.2, , 1008.4, , 1007.8, , 1008.9, , 1011.8, , 1019.5, , 1012.7, , 1014.9, , 1015.2, , 1009.6, , 1009.5,  
1968, 1022.9, , 1022.7, , 1019.2, , 1022.4, , 1023.0, , 1014.9, , 1018.0, , 1015.4, , 1018.7, , 1022.8, , 1019.1, , 1020.0, , 1019.9, , 1021.7, , 1021.6, , 1016.1, , 1020.2,  
1969, 1030.3, , 1023.7, , 1025.2, , 1021.1, , 1020.2, , 1015.6, , 1008.3, , 1015.8, , 1011.3, , 1013.7, , 1013.3, , 1018.7, , 1018.1, , 1024.7, , 1022.2, , 1013.2, , 1012.8,  
1970, 1020.0, , 1021.7, , 1027.4, , 1023.8, , 1019.4, , 1006.9, , 1013.2, , 1013.3, , 1011.0, , 1015.4, , 1016.8, , 1017.0, , 1017.2, , 1020.1, , 1023.5, , 1011.1, , 1014.4,  
1971, 1022.9, , 1015.5, , 1026.3, , 1022.9, , 1015.0, , 1020.8, , 1013.5, , 1004.1, , 1011.1, , 1014.8, , 1020.1, , 1012.8, , 1016.6, , 1018.5, , 1021.4, , 1012.8, , 1015.3,  
1972, 1004.2, , 1015.5, , 1015.1, , 1022.7, , 1018.7, , 1013.8, , 1013.0, , 1010.9, , 1015.3, , 1010.1, , 1016.1, , 1008.7, , 1013.7, , 1010.8, , 1018.8, , 1012.5, , 1013.8,  
1973, 1003.6, , 1017.6, , 1015.3, , 1029.1, , 1020.2, , 1013.7, , 1008.0, , 1011.9, , 1012.8, , 1016.6, , 1023.9, , 1017.5, , 1015.9, , 1010.0, , 1021.5, , 1011.2, , 1017.8,  
1974, 1007.9, , 1018.4, , 1014.3, , 1015.7, , 1022.0, , 1013.5, , 1011.8, , 1014.5, , 1013.9, , 1015.3, , 1014.2, , 1012.6, , 1014.5, , 1014.6, , 1017.3, , 1013.3, , 1014.5,  
1975, 1013.7, , 1015.8, , 1023.2, , 1020.6, , 1023.8, , 1018.7, , 1003.3, , 1008.0, , 1008.4, , 1015.8, , 1017.1, , 1009.4, , 1014.8, , 1014.1, , 1022.5, , 1010.0, , 1013.8,  
1976, 1014.1, , 1003.3, , 1007.9, , 1023.9, , 1020.2, , 1012.5, , 1013.0, , 1005.4, , 1019.2, , 1016.5, , 1017.4, , 1017.7, , 1014.3, , 1009.0, , 1017.3, , 1010.3, , 1017.7,  
1977, 1026.0, , 1019.6, , 1024.3, , 1017.3, , 1021.4, , 1017.2, , 1016.4, , 1021.1, , 1010.7, , 1012.2, , 1015.7, , 1018.2, , 1018.3, , 1021.1, , 1021.0, , 1018.3, , 1012.9,  
1978, 1013.8, , 1028.4, , 1015.5, , 1023.5, , 1017.5, , 1012.1, , 1017.3, , 1007.8, , 1017.6, , 1009.8, , 1008.3, , 1019.3, , 1015.9, , 1020.1, , 1018.8, , 1012.4, , 1011.9,  
1979, 1024.5, , 1018.2, , 1019.8, , 1029.0, , 1025.2, , 1011.0, , 1011.1, , 1011.5, , 1016.6, , 1019.0, , 1016.7, , 1009.6, , 1017.7, , 1020.7, , 1024.7, , 1011.2, , 1017.4,  
1980, 1021.8, , 1013.1, , 1020.5, , 1018.7, , 1023.6, , 1013.7, , 1014.1, , 1009.8, , 1011.1, , 1021.0, , 1021.7, , 1017.7, , 1017.2, , 1014.8, , 1020.9, , 1012.5, , 1017.9,  
1981, 1013.2, , 1013.7, , 1025.7, , 1021.8, , 1016.3, , 1020.0, , 1009.1, , 1004.8, , 1020.1, , 1023.7, , 1015.9, , 1023.6, , 1017.3, , 1014.9, , 1021.3, , 1011.3, , 1019.9,  
1982, 1022.3, , 1016.2, , 1011.9, , 1017.8, , 1024.6, , 1022.0, , 1009.8, , 1011.8, , 1011.2, , 1016.1, , 1013.5, , 1012.4, , 1015.8, , 1020.7, , 1018.1, , 1014.5, , 1013.6,  
1983, 1012.9, , 1015.2, , 1014.4, , 1024.8, , 1022.1, , 1008.6, , 1011.0, , 1009.5, , 1015.5, , 1011.5, , 1020.5, , 1013.9, , 1015.0, , 1013.5, , 1020.4, , 1009.7, , 1015.8,  
1984, 1013.7, , 1016.7, , 1023.4, , 1022.9, , 1016.7, , 1016.3, , 1010.1, , 1005.6, , 1013.7, , 1014.7, , 1016.3, , 1008.1, , 1014.9, , 1014.8, , 1021.0, , 1010.7, , 1014.9,  
1985, 1022.5, , 1021.7, , 1019.0, , 1021.2, , 1023.3, , 1015.0, , 1011.5, , 1013.1, , 1013.7, , 1012.1, , 1021.6, , 1023.8, , 1018.2, , 1017.4, , 1021.2, , 1013.2, , 1015.8,  
1986, 1014.4, , 1022.1, , 1004.6, , 1024.1, , 1019.1, , 1009.9, , 1010.7, , 1011.5, , 1017.0, , 1007.7, , 1016.7, , 1008.4, , 1013.8, , 1020.1, , 1015.9, , 1010.7, , 1013.8,  
1987, 1008.5, , 1024.0, , 1024.7, , 1016.7, , 1019.3, , 1020.0, , 1014.0, , 1015.1, , 1012.7, , 1014.4, , 1016.7, , 1020.0, , 1017.2, , 1013.6, , 1020.2, , 1016.4, , 1014.6,  
1988, 1012.7, , 1016.5, , 1021.1, , 1026.3, , 1020.9, , 1009.1, , 1014.5, , 1007.2, , 1009.3, , 1012.3, , 1015.8, , 1008.6, , 1014.5, , 1016.4, , 1022.8, , 1010.3, , 1012.5,  
1989, 1007.4, , 1008.2, , 1014.0, , 1021.3, , 1017.8, , 1009.9, , 1003.3, , 1011.0, , 1007.0, , 1012.6, , 1011.7, , 1015.4, , 1011.6, , 1008.1, , 1017.7, , 1008.1, , 1010.5,  
1990, 1007.7, , 1004.0, , 1010.2, , 1008.9, , 1016.2, , 1014.0, , 1008.7, , 1013.8, , 1011.3, , 1014.5, , 1019.5, , 1009.9, , 1011.6, , 1009.0, , 1011.8, , 1012.2, , 1015.1,  
1991, 1009.9, , 1013.5, , 1016.6, , 1021.9, , 1019.5, , 1011.4, , 1010.0, , 1002.6, ,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M, 1013.2, , 1011.1, , 1019.3, , 1008.0, ,-9999.9,M 
1992,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
1993,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M, 1019.3, ,-9999.9,M, 1015.2, ,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
1994,-9999.9,M, 1017.8, , 1012.5, , 1021.9, , 1020.3, , 1006.0, ,-9999.9,M, 1007.6, , 1008.5, , 1018.6, , 1010.2, , 1012.2, , 1013.6, ,-9999.9,M, 1018.3, , 1006.8, , 1012.4,  
1995,-9999.9,M, 1015.0, , 1021.4, ,-9999.9,M, 1022.2, , 1012.8, , 1015.8, , 1008.9, , 1012.6, , 1019.0, , 1018.2, , 1019.3, , 1016.5, , 1013.6, , 1021.8, , 1012.5, , 1016.6,  
1996, 1010.9, , 1014.6, , 1017.6, , 1024.6, , 1022.2, , 1010.5, , 1005.5, , 1008.3, , 1014.8, , 1018.6, , 1015.3, , 1021.2, , 1015.3, , 1015.0, , 1021.5, , 1008.1, , 1016.2,  
1997, 1011.4, , 1009.2, , 1013.7, , 1022.5, , 1024.3, , 1019.1, , 1010.9, , 1004.8, , 1012.3, , 1019.2, , 1016.7, , 1009.0, , 1014.4, , 1013.9, , 1020.2, , 1011.6, , 1016.1,  
1998, 1021.1, , 1018.0, , 1020.8, , 1021.7, , 1020.2, , 1020.8, , 1012.1, , 1007.8, , 1020.1, , 1013.8, , 1019.3, , 1015.1, , 1017.6, , 1016.0, , 1020.9, , 1013.6, , 1017.7,  
1999,-9999.9,M, 1018.5, , 1023.4, , 1023.0, , 1018.3, , 1008.9, , 1012.2, , 1013.6, , 1011.5, , 1015.8, , 1012.0, , 1014.3, , 1015.6, , 1016.8, , 1021.6, , 1011.6, , 1013.1,  
2000, 1010.5, , 1009.8, , 1024.5, , 1022.6, , 1015.6, , 1015.2, , 1011.9, , 1009.0, , 1010.1, , 1011.8, , 1017.2, , 1021.7, , 1015.0, , 1011.5, , 1020.9, , 1012.0, , 1013.1,  
2001, 1009.8, , 1017.5, , 1026.0, , 1019.4, , 1019.1, , 1014.3, , 1011.0, , 1009.1, , 1013.7, , 1013.3, , 1013.3, , 1016.4, , 1015.2, , 1016.3, , 1021.5, , 1011.5, , 1013.4,  
2002, 1011.3, , 1016.8, , 1018.1, , 1020.5, , 1020.5, , 1011.0, , 1006.5, , 1010.4, , 1014.1, , 1016.4, , 1016.1, , 1011.6, , 1014.4, , 1014.8, , 1019.7, , 1009.3, , 1015.5,  
2003, 1018.5, , 1011.4, , 1018.2, , 1023.6, , 1014.9, , 1014.0, , 1009.8, , 1008.4, , 1008.9, , 1018.8, , 1014.6, , 1015.1, , 1014.7, , 1013.8, , 1018.9, , 1010.7, , 1014.1,  
2004, 1022.6, , 1017.7, , 1015.7, , 1021.5, , 1021.7, , 1017.1, , 1005.1, , 1011.9, , 1010.2, , 1015.5, , 1016.9, , 1008.9, , 1015.4, , 1018.5, , 1019.6, , 1011.4, , 1014.2,  
2005, 1010.5, , 1015.3, , 1022.3, , 1021.5, , 1021.8, , 1014.7, , 1010.3, , 1012.7, , 1015.3, , 1016.6, , 1014.6, , 1014.2, , 1015.8, , 1011.5, , 1021.9, , 1012.6, , 1015.5,  
2006, 1003.5, , 1022.9, , 1030.4, , 1015.6, , 1022.9, , 1008.0, , 1009.4, , 1013.2, , 1014.1, ,-9999.9,M,-9999.9,M,-9999.9,M, 1015.6, , 1013.5, , 1023.0, , 1010.2, ,-9999.9,M 
2007,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
2008,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
2009,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
2010,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
2011,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
2012,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
2013,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
2014,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M,-9999.9,M 
