Monthly Teleconnection Index: North Atlantic Oscillation (NAO) Indices are normalized using the 1981-2010 base period monthly means and standard deviations. Values are set to -99.90 for calendar months when the pattern is not normally a leading mode of variability. The data is written in fixed length of each colomn. YEAR MONTH INDEX 1950 1 0.56 1950 2 0.01 1950 3 -0.78 1950 4 0.65 1950 5 -0.50 1950 6 0.25 1950 7 -1.23 1950 8 -0.19 1950 9 0.39 1950 10 1.43 1950 11 -1.46 1950 12 -1.03 1951 1 -0.42 1951 2 0.35 1951 3 -1.47 1951 4 -0.38 1951 5 -0.50 1951 6 -1.35 1951 7 1.39 1951 8 -0.41 1951 9 -1.18 1951 10 2.54 1951 11 -0.54 1951 12 1.13 1952 1 0.57 1952 2 -1.38 1952 3 -1.97 1952 4 0.95 1952 5 -0.99 1952 6 -0.10 1952 7 -0.06 1952 8 -0.49 1952 9 -0.38 1952 10 -0.28 1952 11 -1.32 1952 12 -0.49 1953 1 -0.12 1953 2 -1.00 1953 3 -0.45 1953 4 -1.96 1953 5 -0.56 1953 6 1.41 1953 7 0.43 1953 8 -1.04 1953 9 -0.19 1953 10 1.95 1953 11 0.96 1953 12 -0.52 1954 1 -0.08 1954 2 0.40 1954 3 -1.27 1954 4 1.31 1954 5 -0.03 1954 6 0.06 1954 7 -0.57 1954 8 -2.57 1954 9 -0.28 1954 10 1.16 1954 11 0.29 1954 12 0.55 1955 1 -2.65 1955 2 -1.71 1955 3 -0.96 1955 4 -0.60 1955 5 -0.26 1955 6 -0.80 1955 7 1.78 1955 8 1.25 1955 9 0.46 1955 10 -1.09 1955 11 -1.49 1955 12 0.07 1956 1 -0.76 1956 2 -1.71 1956 3 -0.46 1956 4 -1.30 1956 5 2.10 1956 6 0.41 1956 7 -0.72 1956 8 -1.89 1956 9 0.38 1956 10 1.47 1956 11 0.40 1956 12 0.00 1957 1 0.71 1957 2 -0.32 1957 3 -1.73 1957 4 0.39 1957 5 -0.68 1957 6 -0.42 1957 7 -1.16 1957 8 -0.83 1957 9 -1.47 1957 10 1.95 1957 11 0.63 1957 12 0.02 1958 1 -1.14 1958 2 -1.64 1958 3 -2.46 1958 4 0.26 1958 5 -0.17 1958 6 -1.08 1958 7 -1.69 1958 8 -2.13 1958 9 0.08 1958 10 0.68 1958 11 1.59 1958 12 -0.74 1959 1 -1.52 1959 2 0.33 1959 3 -0.56 1959 4 0.25 1959 5 0.41 1959 6 0.71 1959 7 0.77 1959 8 -0.05 1959 9 1.00 1959 10 1.48 1959 11 0.30 1959 12 0.32 1960 1 -2.01 1960 2 -2.59 1960 3 -0.93 1960 4 1.33 1960 5 0.47 1960 6 0.10 1960 7 0.38 1960 8 -1.93 1960 9 0.53 1960 10 -1.37 1960 11 -0.67 1960 12 -0.03 1961 1 -0.03 1961 2 0.07 1961 3 0.17 1961 4 -1.83 1961 5 -0.28 1961 6 1.17 1961 7 -0.36 1961 8 1.03 1961 9 1.36 1961 10 1.07 1961 11 -0.79 1961 12 -1.46 1962 1 0.20 1962 2 0.18 1962 3 -2.99 1962 4 0.93 1962 5 -0.04 1962 6 0.47 1962 7 -2.43 1962 8 0.05 1962 9 -0.21 1962 10 0.96 1962 11 -0.38 1962 12 -1.31 1963 1 -2.98 1963 2 -1.53 1963 3 -0.85 1963 4 -1.61 1963 5 2.05 1963 6 -0.13 1963 7 -0.74 1963 8 -0.95 1963 9 1.89 1963 10 1.53 1963 11 -1.47 1963 12 -1.87 1964 1 -1.62 1964 2 -2.06 1964 3 -1.66 1964 4 0.25 1964 5 0.53 1964 6 1.61 1964 7 1.92 1964 8 -2.40 1964 9 0.34 1964 10 1.32 1964 11 -0.14 1964 12 -0.23 1965 1 -0.65 1965 2 -2.20 1965 3 -1.99 1965 4 0.64 1965 5 -0.52 1965 6 0.60 1965 7 0.35 1965 8 0.45 1965 9 0.51 1965 10 0.92 1965 11 -1.88 1965 12 1.18 1966 1 -2.54 1966 2 -2.02 1966 3 0.18 1966 4 -0.96 1966 5 0.25 1966 6 1.37 1966 7 0.35 1966 8 -2.39 1966 9 -0.29 1966 10 -0.23 1966 11 -0.18 1966 12 0.58 1967 1 -1.55 1967 2 -0.23 1967 3 1.18 1967 4 0.05 1967 5 -0.87 1967 6 1.72 1967 7 0.44 1967 8 1.73 1967 9 1.05 1967 10 0.59 1967 11 0.50 1967 12 -0.51 1968 1 -0.36 1968 2 -1.91 1968 3 0.02 1968 4 -1.32 1968 5 -1.58 1968 6 0.64 1968 7 -0.77 1968 8 -0.97 1968 9 -1.73 1968 10 -1.99 1968 11 -1.11 1968 12 -1.39 1969 1 -1.48 1969 2 -2.20 1969 3 -2.04 1969 4 1.52 1969 5 0.56 1969 6 0.86 1969 7 0.60 1969 8 -1.99 1969 9 2.17 1969 10 1.23 1969 11 -1.14 1969 12 -0.35 1970 1 -2.26 1970 2 0.28 1970 3 -1.41 1970 4 -1.56 1970 5 1.11 1970 6 1.87 1970 7 0.13 1970 8 0.00 1970 9 0.06 1970 10 -0.49 1970 11 -0.76 1970 12 -1.20 1971 1 -1.82 1971 2 -0.17 1971 3 -1.28 1971 4 -0.41 1971 5 0.51 1971 6 -1.28 1971 7 0.27 1971 8 1.87 1971 9 0.53 1971 10 1.14 1971 11 -0.34 1971 12 0.47 1972 1 -0.19 1972 2 -0.08 1972 3 0.35 1972 4 -0.38 1972 5 0.93 1972 6 1.19 1972 7 0.21 1972 8 1.57 1972 9 0.03 1972 10 1.70 1972 11 0.43 1972 12 0.09 1973 1 -0.46 1973 2 0.52 1973 3 -0.09 1973 4 -0.73 1973 5 -0.36 1973 6 0.70 1973 7 0.60 1973 8 -0.20 1973 9 -0.15 1973 10 -0.84 1973 11 -1.11 1973 12 0.21 1974 1 1.05 1974 2 -0.60 1974 3 -0.43 1974 4 0.41 1974 5 -0.17 1974 6 0.17 1974 7 -0.73 1974 8 -0.95 1974 9 0.95 1974 10 1.04 1974 11 -0.70 1974 12 1.30 1975 1 0.17 1975 2 -1.15 1975 3 -1.04 1975 4 -1.89 1975 5 -0.43 1975 6 -0.54 1975 7 1.57 1975 8 -0.46 1975 9 1.67 1975 10 -0.08 1975 11 0.30 1975 12 -0.09 1976 1 -0.80 1976 2 0.61 1976 3 0.38 1976 4 0.14 1976 5 0.94 1976 6 1.11 1976 7 -0.29 1976 8 2.34 1976 9 -1.11 1976 10 0.42 1976 11 0.04 1976 12 -1.57 1977 1 -1.72 1977 2 -1.00 1977 3 -1.25 1977 4 0.56 1977 5 -0.75 1977 6 -0.27 1977 7 -0.42 1977 8 -0.49 1977 9 0.51 1977 10 1.08 1977 11 -0.21 1977 12 -1.02 1978 1 0.26 1978 2 -2.94 1978 3 0.33 1978 4 -1.42 1978 5 1.05 1978 6 1.70 1978 7 -1.11 1978 8 0.70 1978 9 0.60 1978 10 2.61 1978 11 3.06 1978 12 -1.54 1979 1 -2.12 1979 2 -1.20 1979 3 0.41 1979 4 -2.01 1979 5 -0.90 1979 6 1.92 1979 7 0.86 1979 8 1.11 1979 9 1.13 1979 10 0.18 1979 11 0.42 1979 12 0.84 1980 1 -1.38 1980 2 -0.39 1980 3 -0.73 1980 4 1.26 1980 5 -1.34 1980 6 -0.07 1980 7 -0.39 1980 8 -3.01 1980 9 0.79 1980 10 -1.41 1980 11 -0.52 1980 12 0.63 1981 1 -0.08 1981 2 0.60 1981 3 -1.65 1981 4 0.25 1981 5 0.24 1981 6 -0.15 1981 7 0.08 1981 8 0.38 1981 9 -1.27 1981 10 -0.96 1981 11 -0.53 1981 12 -0.11 1982 1 -1.55 1982 2 0.86 1982 3 0.80 1982 4 -0.04 1982 5 -0.44 1982 6 -1.34 1982 7 1.18 1982 8 0.21 1982 9 1.86 1982 10 -0.29 1982 11 1.55 1982 12 1.56 1983 1 1.34 1983 2 -1.04 1983 3 0.59 1983 4 -1.07 1983 5 -0.01 1983 6 1.31 1983 7 1.22 1983 8 1.95 1983 9 -0.95 1983 10 1.22 1983 11 -1.16 1983 12 0.18 1984 1 1.42 1984 2 0.37 1984 3 -0.79 1984 4 -0.45 1984 5 0.55 1984 6 -0.12 1984 7 -0.04 1984 8 1.35 1984 9 0.31 1984 10 0.43 1984 11 -0.20 1984 12 -0.09 1985 1 -2.38 1985 2 -1.00 1985 3 -0.19 1985 4 0.20 1985 5 -0.40 1985 6 -0.50 1985 7 1.25 1985 8 -0.74 1985 9 -0.36 1985 10 1.49 1985 11 -0.84 1985 12 0.11 1986 1 0.78 1986 2 -1.58 1986 3 1.39 1986 4 -0.79 1986 5 0.84 1986 6 1.54 1986 7 0.15 1986 8 -1.53 1986 9 -0.95 1986 10 2.20 1986 11 2.27 1986 12 0.83 1987 1 -1.85 1987 2 -1.27 1987 3 -0.26 1987 4 2.03 1987 5 0.96 1987 6 -1.53 1987 7 0.55 1987 8 -1.19 1987 9 -1.04 1987 10 0.66 1987 11 0.06 1987 12 0.21 1988 1 0.68 1988 2 0.42 1988 3 -0.58 1988 4 -1.42 1988 5 0.64 1988 6 1.19 1988 7 -0.32 1988 8 -0.07 1988 9 -0.82 1988 10 -0.66 1988 11 -0.49 1988 12 0.48 1989 1 0.85 1989 2 1.82 1989 3 1.54 1989 4 0.16 1989 5 1.33 1989 6 0.03 1989 7 1.00 1989 8 -0.11 1989 9 2.15 1989 10 0.48 1989 11 0.03 1989 12 -1.15 1990 1 0.70 1990 2 1.16 1990 3 1.13 1990 4 2.03 1990 5 -1.37 1990 6 0.29 1990 7 0.56 1990 8 1.12 1990 9 1.18 1990 10 0.76 1990 11 -0.39 1990 12 0.11 1991 1 0.49 1991 2 0.74 1991 3 -0.61 1991 4 0.17 1991 5 0.12 1991 6 -0.52 1991 7 -0.46 1991 8 1.46 1991 9 0.61 1991 10 0.30 1991 11 0.37 1991 12 0.34 1992 1 -0.66 1992 2 0.77 1992 3 0.51 1992 4 1.88 1992 5 2.49 1992 6 0.51 1992 7 0.19 1992 8 0.97 1992 9 -0.28 1992 10 -1.40 1992 11 1.12 1992 12 0.35 1993 1 1.35 1993 2 0.12 1993 3 0.30 1993 4 0.91 1993 5 -0.67 1993 6 -0.29 1993 7 -3.14 1993 8 0.03 1993 9 -0.41 1993 10 -0.26 1993 11 2.56 1993 12 1.36 1994 1 0.70 1994 2 0.08 1994 3 0.92 1994 4 1.10 1994 5 -0.48 1994 6 1.84 1994 7 1.34 1994 8 0.36 1994 9 -1.14 1994 10 -0.54 1994 11 0.54 1994 12 1.78 1995 1 0.57 1995 2 0.85 1995 3 0.91 1995 4 -1.07 1995 5 -1.33 1995 6 0.44 1995 7 -0.19 1995 8 0.76 1995 9 0.45 1995 10 0.72 1995 11 -1.59 1995 12 -1.64 1996 1 -0.65 1996 2 -0.52 1996 3 -0.66 1996 4 -0.33 1996 5 -0.93 1996 6 0.87 1996 7 0.70 1996 8 1.19 1996 9 -0.69 1996 10 0.15 1996 11 -0.72 1996 12 -1.40 1997 1 -1.08 1997 2 1.48 1997 3 1.13 1997 4 -1.25 1997 5 -0.21 1997 6 -1.17 1997 7 0.37 1997 8 0.94 1997 9 0.74 1997 10 -1.34 1997 11 -1.08 1997 12 -0.98 1998 1 -0.05 1998 2 -0.57 1998 3 0.51 1998 4 -0.88 1998 5 -1.17 1998 6 -2.44 1998 7 -0.45 1998 8 -0.15 1998 9 -1.80 1998 10 0.20 1998 11 -0.43 1998 12 0.72 1999 1 0.39 1999 2 -0.11 1999 3 -0.16 1999 4 -1.18 1999 5 0.90 1999 6 1.44 1999 7 -0.87 1999 8 0.38 1999 9 0.50 1999 10 0.73 1999 11 0.55 1999 12 1.40 2000 1 0.19 2000 2 1.48 2000 3 0.40 2000 4 -0.18 2000 5 1.52 2000 6 0.28 2000 7 -1.00 2000 8 -0.50 2000 9 -0.06 2000 10 1.51 2000 11 -1.10 2000 12 -0.63 2001 1 -0.22 2001 2 0.07 2001 3 -1.73 2001 4 -0.15 2001 5 0.03 2001 6 0.11 2001 7 -0.22 2001 8 -0.22 2001 9 -0.49 2001 10 0.25 2001 11 0.53 2001 12 -0.86 2002 1 0.00 2002 2 0.80 2002 3 0.32 2002 4 1.14 2002 5 -0.15 2002 6 0.69 2002 7 0.65 2002 8 0.36 2002 9 -0.54 2002 10 -1.97 2002 11 -0.32 2002 12 -0.96 2003 1 -0.32 2003 2 0.26 2003 3 -0.07 2003 4 -0.34 2003 5 0.06 2003 6 0.24 2003 7 0.16 2003 8 -0.22 2003 9 0.16 2003 10 -0.86 2003 11 0.77 2003 12 0.50 2004 1 -0.85 2004 2 -0.60 2004 3 0.67 2004 4 1.11 2004 5 0.23 2004 6 -0.59 2004 7 1.16 2004 8 -0.74 2004 9 0.52 2004 10 -0.69 2004 11 0.63 2004 12 1.03 2005 1 1.26 2005 2 -0.51 2005 3 -2.32 2005 4 -0.47 2005 5 -1.11 2005 6 0.26 2005 7 -0.48 2005 8 0.35 2005 9 0.76 2005 10 -0.55 2005 11 -0.46 2005 12 -0.50 2006 1 0.97 2006 2 -1.02 2006 3 -1.75 2006 4 1.20 2006 5 -1.01 2006 6 1.15 2006 7 0.93 2006 8 -2.35 2006 9 -1.43 2006 10 -1.92 2006 11 0.33 2006 12 1.15 2007 1 -0.25 2007 2 -0.98 2007 3 1.11 2007 4 0.04 2007 5 0.66 2007 6 -1.01 2007 7 -0.55 2007 8 -0.31 2007 9 0.85 2007 10 1.00 2007 11 0.48 2007 12 0.23 2008 1 0.53 2008 2 0.38 2008 3 -0.32 2008 4 -1.31 2008 5 -1.55 2008 6 -1.09 2008 7 -1.24 2008 8 -1.62 2008 9 1.14 2008 10 0.47 2008 11 -0.47 2008 12 -0.35 2009 1 -0.52 2009 2 -0.38 2009 3 0.19 2009 4 -0.36 2009 5 1.61 2009 6 -0.91 2009 7 -2.11 2009 8 -0.37 2009 9 1.62 2009 10 -0.61 2009 11 -0.16 2009 12 -1.88 2010 1 -1.80 2010 2 -2.69 2010 3 -1.33 2010 4 -0.93 2010 5 -1.33 2010 6 -0.52 2010 7 -0.39 2010 8 -1.69 2010 9 -0.62 2010 10 -0.50 2010 11 -1.84 2010 12 -1.80 2011 1 -1.53 2011 2 0.35 2011 3 0.24 2011 4 2.55 2011 5 -0.01 2011 6 -0.98 2011 7 -1.48 2011 8 -1.85 2011 9 0.67 2011 10 0.94 2011 11 1.30 2011 12 2.25 2012 1 0.86 2012 2 0.03 2012 3 0.93 2012 4 0.37 2012 5 -0.79 2012 6 -2.25 2012 7 -1.29 2012 8 -1.39 2012 9 -0.43 2012 10 -1.73 2012 11 -0.74 2012 12 0.07 2013 1 -0.11 2013 2 -0.96 2013 3 -2.09 2013 4 0.60 2013 5 0.58 2013 6 0.83 2013 7 0.70 2013 8 1.12 2013 9 0.38 2013 10 -0.88 2013 11 0.81 2013 12 0.79 2014 1 -0.17 2014 2 1.07 2014 3 0.44 2014 4 0.19 2014 5 -0.80 2014 6 -0.67 2014 7 0.21 2014 8 -2.28 2014 9 1.72 2014 10 -0.87 2014 11 0.58 2014 12 1.63 2015 1 1.57 2015 2 1.05 2015 3 1.12 2015 4 0.64 2015 5 0.19 2015 6 0.24 2015 7 -3.14 2015 8 -1.10 2015 9 -0.49 2015 10 0.99 2015 11 1.70 2015 12 1.99 2016 1 -0.37 2016 2 1.35 2016 3 0.37 2016 4 0.26 2016 5 -0.67 2016 6 -0.13 2016 7 -1.72 2016 8 -2.24 2016 9 0.74 2016 10 0.96 2016 11 -0.31 2016 12 0.35 2017 1 0.05 2017 2 0.69 2017 3 0.37 2017 4 1.74 2017 5 -1.72 2017 6 0.35 2017 7 1.28 2017 8 -1.53 2017 9 -0.45 2017 10 0.71 2017 11 -0.14 2017 12 0.73 2018 1 1.17 2018 2 1.34 2018 3 -1.38 2018 4 1.20 2018 5 2.02 2018 6 1.41 2018 7 1.42 2018 8 2.40 2018 9 1.78 2018 10 1.53 2018 11 -0.25 2018 12 0.48 2019 1 0.18 2019 2 -0.11 2019 3 0.89 2019 4 0.36 2019 5 -2.38 2019 6 -0.79 2019 7 -1.39 2019 8 -1.62 2019 9 -0.01 2019 10 -1.03 2019 11 0.16 2019 12 1.02 2020 1 1.05 2020 2 0.98 2020 3 0.66 2020 4 -1.26 2020 5 -0.33 2020 6 0.16 2020 7 -1.19 2020 8 0.03 2020 9 1.11 2020 10 -0.20 2020 11 2.54 2020 12 -0.37 2021 1 -1.80 2021 2 -0.29 2021 3 0.36 2021 4 -1.69 2021 5 -1.10 2021 6 1.08 2021 7 0.06 2021 8 -0.49 2021 9 -0.06 2021 10 -1.98 2021 11 -0.33 2021 12 0.18 2022 1 0.74 2022 2 1.46 2022 3 0.40 2022 4 -0.54 2022 5 0.71 2022 6 0.19 2022 7 -0.06 2022 8 1.76 2022 9 -1.42 2022 10 -0.27 2022 11 0.59 2022 12 -0.22 2023 1 0.95 2023 2 0.60 2023 3 -1.57 2023 4 -0.83 2023 5 0.41 2023 6 -0.28 2023 7 -2.14 2023 8 -1.62 2023 9 -0.28 2023 10 -1.70 2023 11 -0.47 2023 12 1.70 2024 1 -0.27 2024 2 0.79 2024 3 -0.63 2024 4 -0.99 2024 5 -0.36 2024 6 0.22 2024 7 1.48 2024 8 0.69 2024 9 -1.25 2024 10 0.10 2024 11 -0.38