VLISSINGEN --- GEMIDDELDE WATERTEMPERATUUR PER JAAR ---
1959   11.6
1960   11.2
1961   11.6
1962   10.0
1963    9.4
1964   10.6
1965   10.6
1966   11.3
1967   11.4
1968   11.2
1969   11.3
1970   11.1
1971   11.6
1972   11.3
1973   11.8
1974   11.5
1975   11.7
1976   11.8
1977   11.4
1978   11.0
1979   10.7
1980   10.9
1981   11.0
1982   11.3
1983   11.3
1984   11.1
1985   10.2
1986   10.4
1987   10.5
1988   11.6
1989   12.4
1990   12.3
1991   11.2
1992   11.7
1993   11.4
1994   12.2
1995   12.4
1996   10.3
1997   11.5
1998   11.6
1999   12.3
2000   12.1
2001   11.6
2002   12.0
2003   11.7
2004 -999.9
2005 -999.9
2006   12.3
2007   12.7
2008   11.9
2009   12.0
2010   10.9
2011   12.0
2012   11.6