Campbell 18Z wind_speed 1961 - - - 16.1 11.4 18.5 14.7 16.2 17.1 17.6 17.3 18.1 1962 16.7 17.2 16.5 16.7 14.8 16.7 17.5 19.7 16.9 16.0 17.2 17.6 1963 17.0 16.2 16.4 17.6 18.7 15.9 12.9 15.9 15.3 26.1 19.9 17.2 1964 13.9 13.9 18.0 22.5 21.1 16.2 15.7 18.3 17.4 15.3 15.1 12.0 1965 10.9 15.4 14.5 19.8 17.7 19.9 17.4 16.9 20.1 18.6 17.4 20.6 1966 18.2 17.4 14.4 20.9 13.6 21.4 14.1 17.8 17.4 20.9 17.4 14.1 1967 14.6 19.2 19.8 20.1 19.3 21.6 19.7 20.9 14.9 20.6 13.3 15.1 1968 14.7 20.8 16.5 16.2 14.7 15.1 17.7 17.3 20.1 21.0 18.0 14.5 1969 14.1 18.9 20.0 16.2 16.6 20.8 18.8 20.1 15.2 20.7 17.2 16.3 1970 17.9 16.8 15.1 20.8 16.0 15.7 14.0 17.2 - - 19.4 17.1 1971 14.2 18.4 17.9 18.4 13.0 10.2 11.5 9.5 15.9 16.1 15.8 15.2 1972 13.2 19.4 16.3 16.8 22.0 15.5 14.3 16.1 20.7 22.2 17.3 13.4 1973 17.0 19.8 14.2 20.0 13.4 20.4 13.3 13.3 18.3 20.6 15.9 16.8 1974 18.8 15.3 17.4 15.2 20.0 15.5 14.3 14.5 14.7 19.8 16.2 13.1 1975 11.0 17.5 18.8 21.0 19.4 20.6 18.7 15.4 23.0 19.0 18.4 15.4 1976 17.6 19.1 19.6 18.6 18.2 17.1 16.4 10.1 13.7 12.6 11.0 12.0 1977 12.9 17.7 19.5 14.7 14.0 15.5 15.6 15.3 13.0 21.1 19.6 13.9 1978 18.0 16.6 20.6 17.6 18.3 18.2 17.6 17.5 17.7 18.6 20.6 14.7 1979 20.4 19.7 16.6 17.5 18.1 21.7 16.1 14.0 15.6 14.5 16.6 14.8 1980 16.5 14.2 14.6 20.0 19.7 16.4 15.4 19.4 16.8 17.3 18.7 12.1 1981 19.4 - 12.7 15.9 15.4 14.6 12.7 - - - - - 1982 - - - 11.6 10.5 15.4 14.9 21.4 19.3 15.5 - - 1983 - - - 20.0 18.2 17.5 17.3 19.4 16.1 17.8 - - 1984 - - 10.5 19.5 18.6 23.8 16.2 - 13.8 - - - 1985 - - 19.6 18.9 18.2 16.7 17.8 18.4 19.0 - - - 1986 - - 14.8 18.3 19.4 20.8 13.7 10.9 16.5 - - - 1987 - - 13.9 20.7 20.0 20.8 19.7 18.3 18.2 - - - 1988 - - - 22.4 20.3 18.7 15.0 18.6 13.5 12.0 - - 1989 - - - 16.5 16.2 18.9 13.1 9.7 11.6 - - - 1990 - - - - - - - - - - - - 1991 - - - - - - - - - - - - 1992 - - - 20.5 - 15.7 14.9 - 11.3 - - - 1993 - - - 12.7 17.8 - 18.5 15.3 16.3 - - - 1994 - - - 17.6 14.7 13.3 13.9 18.1 12.3 - - - 1995 18.4 16.4 16.6 13.7 19.0 14.1 13.1 15.4 17.7 15.3 16.7 15.7 1996 10.1 13.2 - 13.0 20.3 15.1 11.8 12.2 13.4 16.8 9.4 13.6 1997 13.9 13.6 16.5 14.7 16.4 17.4 17.1 15.8 17.9 18.7 17.8 13.4 1998 15.6 - 15.7 18.1 15.2 18.8 18.5 19.8 19.4 14.6 16.9 15.3 1999 15.8 15.6 14.5 15.0 17.9 - - - - - - - 2000 - - - - - - - - - - - - 2001 - - - - - - - - - - - - 2002 - - - - - - - - - - - - 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - 12.6 15.7 17.2 14.6 19.3 14.5 2008 18.0 14.3 17.8 15.6 13.5 19.8 12.7 15.1 14.5 19.4 15.5 11.9 2009 15.1 - - - - - - - - - - -