Year Month Max Freq 1950 01 0 0 1950 02 0 0 1950 03 1.82 0.19 1950 04 2.84 0.43 1950 05 2.78 0.39 1950 06 1.64 0.1 1950 07 0 0 1950 08 0 0 1950 09 0 0 1950 10 0 0 1950 11 0 0 1950 12 0 0 1951 01 0 0 1951 02 0 0 1951 03 2.19 0.1 1951 04 3.09 0.53 1951 05 2.16 0.45 1951 06 1.13 0.07 1951 07 0 0 1951 08 0 0 1951 09 0 0 1951 10 0 0 1951 11 0 0 1951 12 0 0 1952 01 0 0 1952 02 0 0 1952 03 2.08 0.13 1952 04 3.16 0.47 1952 05 2.37 0.42 1952 06 1.32 0.13 1952 07 0 0 1952 08 0 0 1952 09 0 0 1952 10 0 0 1952 11 0 0 1952 12 0 0 1953 01 0 0 1953 02 0 0 1953 03 1.74 0.16 1953 04 2.61 0.43 1953 05 2.46 0.35 1953 06 1.51 0.1 1953 07 0 0 1953 08 0 0 1953 09 0 0 1953 10 0 0 1953 11 0 0 1953 12 0 0 1954 01 0 0 1954 02 0 0 1954 03 1.83 0.16 1954 04 2.71 0.43 1954 05 2.09 0.32 1954 06 0 0 1954 07 0 0 1954 08 0 0 1954 09 0 0 1954 10 0 0 1954 11 0 0 1954 12 0 0 1955 01 0 0 1955 02 0 0 1955 03 1.95 0.06 1955 04 2.55 0.47 1955 05 2.19 0.29 1955 06 0 0 1955 07 0 0 1955 08 0 0 1955 09 0 0 1955 10 0 0 1955 11 0 0 1955 12 0 0 1956 01 0 0 1956 02 0 0 1956 03 1.96 0.13 1956 04 2.76 0.4 1956 05 1.99 0.35 1956 06 1.13 0.1 1956 07 0 0 1956 08 0 0 1956 09 0 0 1956 10 0 0 1956 11 0 0 1956 12 0 0 1957 01 0 0 1957 02 0 0 1957 03 1.53 0.16 1957 04 2.38 0.37 1957 05 2.19 0.29 1957 06 1.46 0.1 1957 07 0 0 1957 08 0 0 1957 09 0 0 1957 10 0 0 1957 11 0 0 1957 12 0 0 1958 01 0 0 1958 02 0 0 1958 03 1.79 0.13 1958 04 2.51 0.4 1958 05 1.85 0.35 1958 06 1.14 0.1 1958 07 0 0 1958 08 0 0 1958 09 0 0 1958 10 0 0 1958 11 0 0 1958 12 0 0 1959 01 0 0 1959 02 0 0 1959 03 1.6 0.06 1959 04 2.37 0.43 1959 05 2.42 0.39 1959 06 1.25 0.1 1959 07 0 0 1959 08 0 0 1959 09 0 0 1959 10 0 0 1959 11 0 0 1959 12 0 0 1960 01 0 0 1960 02 0 0 1960 03 1.87 0.13 1960 04 2.82 0.37 1960 05 2.29 0.39 1960 06 1.54 0.27 1960 07 0 0 1960 08 0 0 1960 09 0 0 1960 10 0 0 1960 11 0 0 1960 12 0 0 1961 01 0 0 1961 02 0 0 1961 03 1.48 0.13 1961 04 2.91 0.4 1961 05 2.75 0.39 1961 06 2.1 0.2 1961 07 1.26 0.06 1961 08 0 0 1961 09 0 0 1961 10 0 0 1961 11 0 0 1961 12 0 0 1962 01 0 0 1962 02 0 0 1962 03 1.95 0.13 1962 04 2.94 0.43 1962 05 2.5 0.42 1962 06 1.52 0.23 1962 07 0 0 1962 08 0 0 1962 09 0 0 1962 10 0 0 1962 11 0 0 1962 12 0 0 1963 01 0 0 1963 02 0 0 1963 03 1.66 0.1 1963 04 2.8 0.47 1963 05 2.77 0.45 1963 06 1.82 0.3 1963 07 0 0 1963 08 0 0 1963 09 0 0 1963 10 0 0 1963 11 0 0 1963 12 0 0 1964 01 0 0 1964 02 0 0 1964 03 2.03 0.13 1964 04 3.14 0.43 1964 05 2.79 0.42 1964 06 1.96 0.33 1964 07 0.99 0.03 1964 08 0 0 1964 09 0 0 1964 10 0 0 1964 11 0 0 1964 12 0 0 1965 01 0 0 1965 02 0 0 1965 03 1.59 0.13 1965 04 3.26 0.43 1965 05 3.15 0.45 1965 06 2.31 0.23 1965 07 1.18 0.06 1965 08 0 0 1965 09 0 0 1965 10 0 0 1965 11 0 0 1965 12 0 0 1966 01 0 0 1966 02 0 0 1966 03 2.17 0.1 1966 04 3.28 0.5 1966 05 2.51 0.48 1966 06 1.53 0.23 1966 07 0 0 1966 08 0 0 1966 09 0 0 1966 10 0 0 1966 11 0 0 1966 12 0 0 1967 01 0 0 1967 02 0 0 1967 03 1.86 0.1 1967 04 3.13 0.5 1967 05 2.78 0.45 1967 06 1.73 0.2 1967 07 0 0 1967 08 0 0 1967 09 0 0 1967 10 0 0 1967 11 0 0 1967 12 0 0 1968 01 0 0 1968 02 0 0 1968 03 2.07 0.16 1968 04 3.16 0.4 1968 05 2.66 0.42 1968 06 1.74 0.27 1968 07 0 0 1968 08 0 0 1968 09 0 0 1968 10 0 0 1968 11 0 0 1968 12 0 0 1969 01 0 0 1969 02 0 0 1969 03 1.64 0.16 1969 04 3.27 0.47 1969 05 2.77 0.39 1969 06 1.76 0.1 1969 07 0 0 1969 08 0 0 1969 09 0 0 1969 10 0 0 1969 11 0 0 1969 12 0 0 1970 01 0 0 1970 02 0 0 1970 03 2.14 0.1 1970 04 3.06 0.5 1970 05 2.24 0.42 1970 06 0 0 1970 07 0 0 1970 08 0 0 1970 09 0 0 1970 10 0 0 1970 11 0 0 1970 12 0 0 1971 01 0 0 1971 02 0 0 1971 03 1.92 0.13 1971 04 2.94 0.5 1971 05 2.33 0.42 1971 06 1.28 0.1 1971 07 0 0 1971 08 0 0 1971 09 0 0 1971 10 0 0 1971 11 0 0 1971 12 0 0 1972 01 0 0 1972 02 0 0 1972 03 1.97 0.16 1972 04 2.75 0.4 1972 05 2.22 0.39 1972 06 1.27 0.07 1972 07 0 0 1972 08 0 0 1972 09 0 0 1972 10 0 0 1972 11 0 0 1972 12 0 0 1973 01 0 0 1973 02 0 0 1973 03 1.58 0.16 1973 04 2.93 0.4 1973 05 2.27 0.26 1973 06 1.29 0.07 1973 07 0 0 1973 08 0 0 1973 09 0 0 1973 10 0 0 1973 11 0 0 1973 12 0 0 1974 01 0 0 1974 02 0 0 1974 03 1.83 0.06 1974 04 2.49 0.43 1974 05 2.4 0.32 1974 06 0 0 1974 07 0 0 1974 08 0 0 1974 09 0 0 1974 10 0 0 1974 11 0 0 1974 12 0 0 1975 01 0 0 1975 02 0 0 1975 03 1.86 0.13 1975 04 2.67 0.37 1975 05 1.99 0.32 1975 06 1.17 0.13 1975 07 0 0 1975 08 0 0 1975 09 0 0 1975 10 0 0 1975 11 0 0 1975 12 0 0 1976 01 0 0 1976 02 0 0 1976 03 1.73 0.13 1976 04 2.36 0.4 1976 05 2.16 0.32 1976 06 1.33 0.07 1976 07 0 0 1976 08 0 0 1976 09 0 0 1976 10 0 0 1976 11 0 0 1976 12 0 0 1977 01 0 0 1977 02 0 0 1977 03 1.51 0.16 1977 04 2.65 0.37 1977 05 2.17 0.32 1977 06 1.4 0.1 1977 07 0 0 1977 08 0 0 1977 09 0 0 1977 10 0 0 1977 11 0 0 1977 12 0 0 1978 01 0 0 1978 02 0 0 1978 03 1.48 0.06 1978 04 2.47 0.4 1978 05 2.68 0.42 1978 06 1.15 0.13 1978 07 0 0 1978 08 0 0 1978 09 0 0 1978 10 0 0 1978 11 0 0 1978 12 0 0 1979 01 0 0 1979 02 0 0 1979 03 1.9 0.13 1979 04 2.89 0.37 1979 05 2.31 0.39 1979 06 1.57 0.23 1979 07 0 0 1979 08 0 0 1979 09 0 0 1979 10 0 0 1979 11 0 0 1979 12 0 0 1980 01 0 0 1980 02 0 0 1980 03 1.7 0.13 1980 04 2.82 0.4 1980 05 2.76 0.39 1980 06 2.01 0.23 1980 07 1.17 0.03 1980 08 0 0 1980 09 0 0 1980 10 0 0 1980 11 0 0 1980 12 0 0 1981 01 0 0 1981 02 0 0 1981 03 1.7 0.13 1981 04 2.88 0.4 1981 05 2.52 0.42 1981 06 1.76 0.23 1981 07 0 0 1981 08 0 0 1981 09 0 0 1981 10 0 0 1981 11 0 0 1981 12 0 0 1982 01 0 0 1982 02 0 0 1982 03 1.47 0.1 1982 04 2.67 0.47 1982 05 3.1 0.48 1982 06 1.68 0.27 1982 07 0 0 1982 08 0 0 1982 09 0 0 1982 10 0 0 1982 11 0 0 1982 12 0 0 1983 01 0 0 1983 02 0 0 1983 03 2.05 0.16 1983 04 3.27 0.4 1983 05 2.94 0.42 1983 06 1.79 0.3 1983 07 0 0 1983 08 0 0 1983 09 0 0 1983 10 0 0 1983 11 0 0 1983 12 0 0 1984 01 0 0 1984 02 0 0 1984 03 1.76 0.16 1984 04 3.17 0.43 1984 05 3.11 0.45 1984 06 2.22 0.23 1984 07 0.93 0.03 1984 08 0 0 1984 09 0 0 1984 10 0 0 1984 11 0 0 1984 12 0 0 1985 01 0 0 1985 02 0 0 1985 03 1.94 0.13 1985 04 3.03 0.5 1985 05 2.69 0.48 1985 06 1.62 0.17 1985 07 0 0 1985 08 0 0 1985 09 0 0 1985 10 0 0 1985 11 0 0 1985 12 0 0 1986 01 0 0 1986 02 0 0 1986 03 1.6 0.1 1986 04 2.76 0.47 1986 05 3.11 0.45 1986 06 1.7 0.17 1986 07 0 0 1986 08 0 0 1986 09 0 0 1986 10 0 0 1986 11 0 0 1986 12 0 0 1987 01 0 0 1987 02 0 0 1987 03 2.15 0.13 1987 04 3.25 0.4 1987 05 2.58 0.42 1987 06 1.52 0.2 1987 07 0 0 1987 08 0 0 1987 09 0 0 1987 10 0 0 1987 11 0 0 1987 12 0 0 1988 01 0 0 1988 02 0 0 1988 03 1.71 0.16 1988 04 3.21 0.4 1988 05 2.82 0.35 1988 06 1.68 0.1 1988 07 0 0 1988 08 0 0 1988 09 0 0 1988 10 0 0 1988 11 0 0 1988 12 0 0 1989 01 0 0 1989 02 0 0 1989 03 1.94 0.1 1989 04 2.8 0.47 1989 05 2.21 0.39 1989 06 1.14 0.03 1989 07 0 0 1989 08 0 0 1989 09 0 0 1989 10 0 0 1989 11 0 0 1989 12 0 0 1990 01 0 0 1990 02 0 0 1990 03 1.66 0.13 1990 04 2.58 0.47 1990 05 2.48 0.39 1990 06 1.29 0.03 1990 07 0 0 1990 08 0 0 1990 09 0 0 1990 10 0 0 1990 11 0 0 1990 12 0 0 1991 01 0 0 1991 02 0 0 1991 03 2.06 0.16 1991 04 2.91 0.4 1991 05 2.08 0.35 1991 06 0 0 1991 07 0 0 1991 08 0 0 1991 09 0 0 1991 10 0 0 1991 11 0 0 1991 12 0 0 1992 01 0 0 1992 02 0 0 1992 03 1.57 0.16 1992 04 2.9 0.37 1992 05 2.25 0.29 1992 06 1.35 0.07 1992 07 0 0 1992 08 0 0 1992 09 0 0 1992 10 0 0 1992 11 0 0 1992 12 0 0 1993 01 0 0 1993 02 0 0 1993 03 1.62 0.06 1993 04 2.41 0.43 1993 05 2.42 0.35 1993 06 0 0 1993 07 0 0 1993 08 0 0 1993 09 0 0 1993 10 0 0 1993 11 0 0 1993 12 0 0 1994 01 0 0 1994 02 0 0 1994 03 1.61 0.13 1994 04 2.38 0.43 1994 05 2.09 0.35 1994 06 1.31 0.1 1994 07 0 0 1994 08 0 0 1994 09 0 0 1994 10 0 0 1994 11 0 0 1994 12 0 0 1995 01 0 0 1995 02 0 0 1995 03 1.9 0.13 1995 04 2.63 0.37 1995 05 1.93 0.32 1995 06 1.15 0.1 1995 07 0 0 1995 08 0 0 1995 09 0 0 1995 10 0 0 1995 11 0 0 1995 12 0 0 1996 01 0 0 1996 02 0 0 1996 03 1.45 0.13 1996 04 2.81 0.37 1996 05 2.25 0.29 1996 06 1.55 0.1 1996 07 0 0 1996 08 0 0 1996 09 0 0 1996 10 0 0 1996 11 0 0 1996 12 0 0 1997 01 0 0 1997 02 0 0 1997 03 1.28 0.03 1997 04 2.45 0.4 1997 05 2.72 0.45 1997 06 1.25 0.17 1997 07 0 0 1997 08 0 0 1997 09 0 0 1997 10 0 0 1997 11 0 0 1997 12 0 0 1998 01 0 0 1998 02 0 0 1998 03 1.72 0.13 1998 04 2.73 0.4 1998 05 2.38 0.35 1998 06 1.58 0.23 1998 07 0 0 1998 08 0 0 1998 09 0 0 1998 10 0 0 1998 11 0 0 1998 12 0 0 1999 01 0 0 1999 02 0 0 1999 03 1.91 0.13 1999 04 2.85 0.4 1999 05 2.49 0.35 1999 06 1.84 0.27 1999 07 0 0 1999 08 0 0 1999 09 0 0 1999 10 0 0 1999 11 0 0 1999 12 0 0 2000 01 0 0 2000 02 0 0 2000 03 1.55 0.13 2000 04 3.07 0.43 2000 05 2.82 0.42 2000 06 2.13 0.2 2000 07 1.05 0.03 2000 08 0 0 2000 09 0 0 2000 10 0 0 2000 11 0 0 2000 12 0 0 2001 01 0 0 2001 02 0 0 2001 03 1.42 0.03 2001 04 2.77 0.47 2001 05 3.14 0.48 2001 06 1.86 0.23 2001 07 0 0 2001 08 0 0 2001 09 0 0 2001 10 0 0 2001 11 0 0 2001 12 0 0 2002 01 0 0 2002 02 0 0 2002 03 1.92 0.16 2002 04 3.12 0.37 2002 05 2.77 0.42 2002 06 1.87 0.3 2002 07 0 0 2002 08 0 0 2002 09 0 0 2002 10 0 0 2002 11 0 0 2002 12 0 0 2003 01 0 0 2003 02 0 0 2003 03 2.03 0.13 2003 04 3.03 0.43 2003 05 2.82 0.42 2003 06 1.99 0.27 2003 07 0 0 2003 08 0 0 2003 09 0 0 2003 10 0 0 2003 11 0 0 2003 12 0 0 2004 01 0 0 2004 02 0 0 2004 03 1.69 0.13 2004 04 3.26 0.5 2004 05 2.97 0.48 2004 06 1.95 0.17 2004 07 0 0 2004 08 0 0 2004 09 0 0 2004 10 0 0 2004 11 0 0 2004 12 0 0 2005 01 0 0 2005 02 0 0 2005 03 1.57 0.06 2005 04 2.84 0.53 2005 05 3.2 0.48 2005 06 1.81 0.17 2005 07 0 0 2005 08 0 0 2005 09 0 0 2005 10 0 0 2005 11 0 0 2005 12 0 0 2006 01 0 0 2006 02 0 0 2006 03 2.07 0.13 2006 04 3.2 0.43 2006 05 2.42 0.42 2006 06 1.44 0.23 2006 07 0 0 2006 08 0 0 2006 09 0 0 2006 10 0 0 2006 11 0 0 2006 12 0 0 2007 01 0 0 2007 02 0 0 2007 03 1.96 0.13 2007 04 2.92 0.47 2007 05 2.58 0.35 2007 06 1.46 0.1 2007 07 0 0 2007 08 0 0 2007 09 0 0 2007 10 0 0 2007 11 0 0 2007 12 0 0 2008 01 0 0 2008 02 0 0 2008 03 1.73 0.1 2008 04 3.06 0.47 2008 05 2.39 0.35 2008 06 1.38 0.07 2008 07 0 0 2008 08 0 0 2008 09 0 0 2008 10 0 0 2008 11 0 0 2008 12 0 0 2009 01 0 0 2009 02 0 0 2009 03 1.54 0.1 2009 04 2.66 0.43 2009 05 2.64 0.39 2009 06 1.36 0.03 2009 07 0 0 2009 08 0 0 2009 09 0 0 2009 10 0 0 2009 11 0 0 2009 12 0 0 2010 01 0 0 2010 02 0 0 2010 03 2.01 0.16 2010 04 2.79 0.4 2010 05 1.87 0.32 2010 06 0 0 2010 07 0 0 2010 08 0 0 2010 09 0 0 2010 10 0 0 2010 11 0 0 2010 12 0 0 2011 01 0 0 2011 02 0 0 2011 03 1.77 0.13 2011 04 2.66 0.4 2011 05 2.05 0.29 2011 06 1.13 0.03 2011 07 0 0 2011 08 0 0 2011 09 0 0 2011 10 0 0 2011 11 0 0 2011 12 0 0 2012 01 0 0 2012 02 0 0 2012 03 1.51 0.06 2012 04 2.65 0.43 2012 05 2.14 0.32 2012 06 0 0 2012 07 0 0 2012 08 0 0 2012 09 0 0 2012 10 0 0 2012 11 0 0 2012 12 0 0 2013 01 0 0 2013 02 0 0 2013 03 1.43 0.13 2013 04 2.36 0.37 2013 05 2.28 0.35 2013 06 1.49 0.1 2013 07 0 0 2013 08 0 0 2013 09 0 0 2013 10 0 0 2013 11 0 0 2013 12 0 0 2014 01 0 0 2014 02 0 0 2014 03 1.9 0.13 2014 04 2.69 0.37 2014 05 2.05 0.29 2014 06 1.26 0.13 2014 07 0 0 2014 08 0 0 2014 09 0 0 2014 10 0 0 2014 11 0 0 2014 12 0 0 2015 01 0 0 2015 02 0 0 2015 03 1.6 0.13 2015 04 2.69 0.4 2015 05 2.38 0.32 2015 06 1.6 0.13 2015 07 0 0 2015 08 0 0 2015 09 0 0 2015 10 0 0 2015 11 0 0 2015 12 0 0 2016 01 0 0 2016 02 0 0 2016 03 1.26 0.03 2016 04 2.58 0.4 2016 05 2.52 0.42 2016 06 1.59 0.2 2016 07 0 0 2016 08 0 0 2016 09 0 0 2016 10 0 0 2016 11 0 0 2016 12 0 0 2017 01 0 0 2017 02 0 0 2017 03 1.47 0.13 2017 04 2.49 0.37 2017 05 2.72 0.39 2017 06 1.99 0.23 2017 07 1.15 0.06 2017 08 0 0 2017 09 0 0 2017 10 0 0 2017 11 0 0 2017 12 0 0 2018 01 0 0 2018 02 0 0 2018 03 2.02 0.13 2018 04 3.04 0.4 2018 05 2.63 0.39 2018 06 1.64 0.27 2018 07 0 0 2018 08 0 0 2018 09 0 0 2018 10 0 0 2018 11 0 0 2018 12 0 0 2019 01 0 0 2019 02 0 0 2019 03 1.64 0.16 2019 04 3.12 0.4 2019 05 2.96 0.42 2019 06 2.08 0.23 2019 07 1.13 0.03 2019 08 0 0 2019 09 0 0 2019 10 0 0 2019 11 0 0 2019 12 0 0