EASTER ISLAND SEA LEVEL PRESS (1000 MB SUBTRACTED) ORIGINAL DATA YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1951 19.6 19.4 19.9 16.7 16.0 19.0 17.9 18.4 17.9 21.3 23.1 20.7 1952 19.9 18.6 19.1 15.8 18.9 19.5 23.9 21.5 17.9 21.5 20.5 19.7 1953 19.5 16.4 20.1 17.2 19.2 20.9 20.6 18.0 21.4 27.0 22.2 20.9 1954 20.3 22.5 18.3 18.7 20.8 19.4 23.4 20.4 25.7 26.0 24.0 22.8 1955 19.5 22.3 20.6 22.1 20.3 21.5 21.7 23.1 27.1 26.1 20.9 22.7 1956 20.7 20.0 20.5 20.6 21.8 19.3 20.3 22.0 22.1 21.5 19.2 15.4 1957 16.7 17.2 17.8 17.2 16.2 16.6 19.9 21.9 21.7 23.3 19.2 19.2 1958 19.5 20.5 19.4 15.0 14.3 21.9 15.3 22.4 20.1 21.6 22.5 16.8 1959 21.1 19.8 17.0 20.6 15.9 22.8 19.4 24.4 20.4 21.7 21.5 20.6 1960 17.5 19.2 16.5 17.6 18.3 17.9 21.8 22.2 23.0 23.4 21.3 17.7 1961 19.5 21.3 19.1 19.1 15.9 17.2 15.0 17.2 22.1 20.8 20.7 18.7 1962 17.5 16.8 19.0 20.0 20.7 19.0 19.6 24.3 24.1 23.9 18.7 20.5 1963 22.1 21.5 21.6 16.7 15.3 19.3 25.4 20.3 20.2 20.1 23.2 19.6 1964 19.6 20.1 20.0 20.2 16.0 21.7 20.7 23.3 23.5 19.8 17.3 20.4 1965 18.8 18.6 17.0 19.2 15.7 17.2 18.7 20.0 20.0 23.7 18.7 16.8 1966 18.0 20.4 19.0 17.7 15.6 23.7 17.9 22.9 24.1 21.7 20.0 21.4 1967 19.3 21.1 19.9 17.0 20.1 24.1 26.7 23.8 25.2 21.5 19.9 20.3 1968 20.0 18.0 23.0 18.0 17.0 23.0 21.0 19.0 17.0 23.0 20.0 20.0 1969 16.0 21.0 21.0 18.0 17.0 19.0 17.0 22.0 20.0 22.0 25.0 20.0 1970 21.0 20.0 17.0 17.0 23.0 22.0 24.0 22.0 22.0 22.0 24.0 22.0 1971 21.3 20.5 21.2 19.2 24.7 24.1 17.7 23.7 23.5 20.8 22.8 20.9 1972 16.2 16.6 20.1 18.1 14.3 13.1 19.3 17.0 18.5 20.8 20.0 18.5 1973 19.8 21.0 20.0 17.9 18.4 20.5 20.8 22.2 25.0 23.0 21.9 23.1 1974 20.8 21.5 20.9 18.3 17.1 22.5 22.0 17.4 22.2 23.0 23.4 19.1 1975 18.0 15.5 20.4 16.5 19.0 20.0 20.5 24.1 23.7 22.9 21.6 20.4 1976 19.6 20.4 19.3 16.6 14.4 16.0 17.3 22.3 18.2 17.2 18.7 14.1 1977 16.1 20.6 16.1 14.6 13.6 19.4 24.7 23.6 17.7 19.3 21.5 18.6 1978 21.3 18.6 19.1 16.1 17.1 20.2 18.9 22.6 21.9 17.6 18.2 19.0 1979 17.0 20.0 18.8 14.2 14.9 22.3 17.5 14.4 22.0 21.1 17.4 18.4 1980 19.5 18.5 16.6 18.3 18.7 20.0 19.8 20.7 19.2 23.1 19.4 17.8 1981 21.6 21.2 17.9 17.2 18.1 17.9 19.8 19.8 17.8 20.7 22.0 20.7 1982 20.7 21.0 19.7 14.3 18.2 20.8 17.4 16.2 18.3 19.3 16.4 16.5 1983 13.7 14.6 17.4 17.3 17.5 19.7 19.0 23.1 23.0 21.0 22.1 19.0 1984 17.0 18.9 19.0 15.8 18.2 19.8 21.0 20.6 18.2 21.9 21.8 19.3 1985 20.8 19.6 19.5 20.9 18.0 18.0 20.1 26.0 23.6 19.7 21.1 22.1 1986 21.3 20.2 20.6 18.2 15.2 18.8 14.5 18.1 19.0 19.9 20.7 21.4 1987 21.0 16.8 16.4 19.5 18.9 14.4 15.8 17.4 19.2 20.9 20.7 20.6 1988 20.3 16.7 18.3 18.6 16.8 23.5 23.2 22.3 26.7 22.7 23.3 20.6 1989 19.9 18.0 19.7 17.9 17.5 20.1 22.0 21.9 20.9 23.2 17.9 20.4 1990 24.1 17.2 18.8 17.7 18.6 17.4 21.2 19.0 20.5 25.5 23.7 19.7 1991 20.2 19.9 16.5 16.5 13.5 13.1 22.0 25.0 18.9 20.8 19.5 16.9 1992 18.5 18.7 15.8 18.8 17.3 19.8 21.8 19.9 21.4 22.3 18.1 20.2 1993 15.8 17.0 16.4 16.6 20.7 17.0 20.8 18.1 20.3 19.0 23.7 20.8 1994 18.5 21.5 16.2 17.3 17.0 19.9 18.1 24.2 15.8 19.8 23.3 20.0 1995 21.6 19.6 18.5 17.2 16.7 18.6 20.4 24.2 24.5 20.8 24.1 18.5 EASTER ISLAND SEA LEVEL PRESS ANOMALY YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1951 0.4 -0.2 0.6 -1.1 -1.7 -1.1 -2.4 -2.8 -3.7 -0.7 2.2 1.2 1952 0.7 -1.0 -0.2 -2.0 1.2 -0.6 3.6 0.3 -3.7 -0.5 -0.4 0.2 1953 0.3 -3.2 0.8 -0.6 1.5 0.8 0.3 -3.2 -0.2 5.0 1.3 1.4 1954 1.1 2.9 -1.0 0.9 3.1 -0.7 3.1 -0.8 4.1 4.0 3.1 3.3 1955 0.3 2.7 1.3 4.3 2.6 1.4 1.4 1.9 5.5 4.1 0.0 3.2 1956 1.5 0.4 1.2 2.8 4.1 -0.8 0.0 0.8 0.5 -0.5 -1.7 -4.1 1957 -2.5 -2.4 -1.5 -0.6 -1.5 -3.5 -0.4 0.7 0.1 1.3 -1.7 -0.3 1958 0.3 0.9 0.1 -2.8 -3.4 1.8 -5.0 1.2 -1.5 -0.4 1.6 -2.7 1959 1.9 0.2 -2.3 2.8 -1.8 2.7 -0.9 3.2 -1.2 -0.3 0.6 1.1 1960 -1.7 -0.4 -2.8 -0.2 0.6 -2.2 1.5 1.0 1.4 1.4 0.4 -1.8 1961 0.3 1.7 -0.2 1.3 -1.8 -2.9 -5.3 -4.0 0.5 -1.2 -0.2 -0.8 1962 -1.7 -2.8 -0.3 2.2 3.0 -1.1 -0.7 3.1 2.5 1.9 -2.2 1.0 1963 2.9 1.9 2.3 -1.1 -2.4 -0.8 5.1 -0.9 -1.4 -1.9 2.3 0.1 1964 0.4 0.5 0.7 2.4 -1.7 1.6 0.4 2.1 1.9 -2.2 -3.6 0.9 1965 -0.4 -1.0 -2.3 1.4 -2.0 -2.9 -1.6 -1.2 -1.6 1.7 -2.2 -2.7 1966 -1.2 0.8 -0.3 -0.1 -2.1 3.6 -2.4 1.7 2.5 -0.3 -0.9 1.9 1967 0.1 1.5 0.6 -0.8 2.4 4.0 6.4 2.6 3.6 -0.5 -1.0 0.8 1968 0.8 -1.6 3.7 0.2 -0.7 2.9 0.7 -2.2 -4.6 1.0 -0.9 0.5 1969 -3.2 1.4 1.7 0.2 -0.7 -1.1 -3.3 0.8 -1.6 0.0 4.1 0.5 1970 1.8 0.4 -2.3 -0.8 5.3 1.9 3.7 0.8 0.4 0.0 3.1 2.5 1971 2.1 0.9 1.9 1.4 7.0 4.0 -2.6 2.5 1.9 -1.2 1.9 1.4 1972 -3.0 -3.0 0.8 0.3 -3.4 -7.0 -1.0 -4.2 -3.1 -1.2 -0.9 -1.0 1973 0.6 1.4 0.7 0.1 0.7 0.4 0.5 1.0 3.4 1.0 1.0 3.6 1974 1.6 1.9 1.6 0.5 -0.6 2.4 1.7 -3.8 0.6 1.0 2.5 -0.4 1975 -1.2 -4.1 1.1 -1.3 1.3 -0.1 0.2 2.9 2.1 0.9 0.7 0.9 1976 0.4 0.8 0.0 -1.2 -3.3 -4.1 -3.0 1.1 -3.4 -4.8 -2.2 -5.4 1977 -3.1 1.0 -3.2 -3.2 -4.1 -0.7 4.4 2.4 -3.9 -2.7 0.6 -0.9 1978 2.1 -1.0 -0.2 -1.7 -0.6 0.1 -1.4 1.4 0.3 -4.4 -2.7 -0.5 1979 -2.2 0.4 -0.5 -3.6 -2.8 2.2 -2.8 -6.8 0.4 -0.9 -3.5 -1.1 1980 0.3 -1.1 -2.7 0.5 1.0 -0.1 -0.5 -0.5 -2.4 1.1 -1.5 -1.7 1981 2.4 1.6 -1.4 -0.6 0.4 -2.2 -0.5 -1.4 -3.8 -1.3 1.1 1.2 1982 1.5 1.4 0.4 -3.5 0.5 0.7 -2.9 -5.0 -3.3 -2.7 -4.5 -3.0 1983 -5.5 -5.0 -1.9 -0.5 -0.2 -0.4 -1.3 1.9 1.4 -1.0 1.2 -0.5 1984 -2.2 -0.7 -0.3 -2.0 0.5 -0.3 0.7 -0.6 -3.4 -0.1 0.9 -0.2 1985 1.6 0.0 0.2 3.1 0.3 -2.1 -0.2 4.8 2.0 -2.3 0.2 2.6 1986 2.1 0.6 1.3 0.4 -2.5 -1.3 -5.8 -3.1 -2.6 -2.1 -0.2 1.9 1987 1.8 -2.8 -2.9 1.7 1.2 -5.7 -4.5 -3.8 -2.4 -1.1 -0.2 1.1 1988 1.1 -2.9 -1.0 0.8 -0.9 3.4 2.9 1.1 5.1 0.7 2.4 1.1 1989 0.7 -1.6 0.4 0.1 -0.2 0.0 1.7 0.7 -0.7 1.2 -3.0 0.9 1990 4.9 -2.4 -0.5 -0.1 0.9 -2.7 0.9 -2.2 -1.1 3.5 2.8 0.2 1991 1.0 0.3 -2.8 -1.3 -4.2 -7.0 1.7 3.8 -2.7 -1.2 -1.4 -2.6 1992 -0.7 -0.9 -3.5 1.0 -0.4 -0.3 1.5 -1.3 -0.2 0.3 -2.8 0.7 1993 -3.4 -2.6 -2.9 -1.2 3.0 -3.1 0.5 -3.1 -1.3 -3.0 2.8 1.3 1994 -0.7 1.9 -3.1 -0.5 -0.7 -0.2 -2.2 3.0 -5.8 -2.2 2.4 0.5 1995 2.4 0.0 -0.8 -0.6 -1.0 -1.5 0.1 3.0 2.9 -1.2 3.2 -1.0 EASTER ISLAND SEA LEVEL PRESS STANDARDIZED DATA YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1951 0.2 -0.1 0.3 -0.5 -0.8 -0.5 -1.1 -1.3 -1.7 -0.3 1.0 0.5 1952 0.3 -0.4 -0.1 -0.9 0.6 -0.3 1.6 0.1 -1.7 -0.2 -0.2 0.1 1953 0.1 -1.4 0.4 -0.3 0.7 0.4 0.1 -1.5 -0.1 2.2 0.6 0.6 1954 0.5 1.3 -0.4 0.4 1.4 -0.3 1.4 -0.4 1.9 1.8 1.4 1.5 1955 0.1 1.2 0.6 1.9 1.2 0.6 0.6 0.8 2.5 1.8 0.0 1.4 1956 0.7 0.2 0.6 1.3 1.9 -0.4 0.0 0.3 0.2 -0.2 -0.8 -1.9 1957 -1.1 -1.1 -0.7 -0.3 -0.7 -1.6 -0.2 0.3 0.1 0.6 -0.8 -0.2 1958 0.1 0.4 0.1 -1.3 -1.5 0.8 -2.2 0.5 -0.7 -0.2 0.7 -1.2 1959 0.9 0.1 -1.0 1.3 -0.8 1.2 -0.4 1.4 -0.5 -0.1 0.3 0.5 1960 -0.8 -0.2 -1.3 -0.1 0.3 -1.0 0.7 0.4 0.6 0.6 0.2 -0.8 1961 0.1 0.8 -0.1 0.6 -0.8 -1.3 -2.4 -1.8 0.2 -0.6 -0.1 -0.4 1962 -0.8 -1.3 -0.1 1.0 1.4 -0.5 -0.3 1.4 1.1 0.8 -1.0 0.4 1963 1.3 0.9 1.0 -0.5 -1.1 -0.4 2.3 -0.4 -0.6 -0.9 1.0 0.0 1964 0.2 0.2 0.3 1.1 -0.8 0.7 0.2 0.9 0.9 -1.0 -1.6 0.4 1965 -0.2 -0.4 -1.0 0.6 -0.9 -1.3 -0.7 -0.6 -0.7 0.8 -1.0 -1.2 1966 -0.5 0.4 -0.1 0.0 -0.9 1.6 -1.1 0.7 1.1 -0.1 -0.4 0.8 1967 0.0 0.7 0.3 -0.4 1.1 1.8 2.9 1.2 1.6 -0.2 -0.4 0.3 1968 0.4 -0.7 1.7 0.1 -0.3 1.3 0.3 -1.0 -2.1 0.4 -0.4 0.2 1969 -1.4 0.6 0.8 0.1 -0.3 -0.5 -1.5 0.3 -0.7 0.0 1.9 0.2 1970 0.8 0.2 -1.0 -0.4 2.4 0.9 1.7 0.3 0.2 0.0 1.4 1.1 1971 1.0 0.4 0.9 0.6 3.2 1.8 -1.2 1.1 0.9 -0.6 0.9 0.6 1972 -1.3 -1.4 0.4 0.1 -1.5 -3.2 -0.4 -1.9 -1.4 -0.6 -0.4 -0.5 1973 0.3 0.6 0.3 0.0 0.3 0.2 0.2 0.4 1.5 0.4 0.5 1.6 1974 0.7 0.9 0.7 0.2 -0.3 1.1 0.8 -1.7 0.3 0.4 1.1 -0.2 1975 -0.5 -1.8 0.5 -0.6 0.6 0.0 0.1 1.3 1.0 0.4 0.3 0.4 1976 0.2 0.4 0.0 -0.5 -1.5 -1.8 -1.3 0.5 -1.5 -2.2 -1.0 -2.5 1977 -1.4 0.5 -1.4 -1.4 -1.8 -0.3 2.0 1.1 -1.7 -1.2 0.3 -0.4 1978 1.0 -0.4 -0.1 -0.8 -0.3 0.0 -0.6 0.6 0.1 -2.0 -1.2 -0.2 1979 -1.0 0.2 -0.2 -1.6 -1.2 1.0 -1.3 -3.1 0.2 -0.4 -1.6 -0.5 1980 0.1 -0.5 -1.2 0.2 0.5 0.0 -0.2 -0.2 -1.1 0.5 -0.7 -0.8 1981 1.1 0.7 -0.6 -0.3 0.2 -1.0 -0.2 -0.6 -1.7 -0.6 0.5 0.5 1982 0.7 0.6 0.2 -1.6 0.2 0.3 -1.3 -2.3 -1.5 -1.2 -2.0 -1.4 1983 -2.5 -2.3 -0.8 -0.2 -0.1 -0.2 -0.6 0.8 0.6 -0.5 0.5 -0.2 1984 -1.0 -0.3 -0.1 -0.9 0.2 -0.1 0.3 -0.3 -1.5 -0.1 0.4 -0.1 1985 0.7 0.0 0.1 1.4 0.1 -0.9 -0.1 2.1 0.9 -1.0 0.1 1.2 1986 1.0 0.3 0.6 0.2 -1.1 -0.6 -2.6 -1.4 -1.2 -1.0 -0.1 0.8 1987 0.8 -1.3 -1.3 0.8 0.6 -2.6 -2.0 -1.7 -1.1 -0.5 -0.1 0.5 1988 0.5 -1.3 -0.4 0.4 -0.4 1.5 1.3 0.5 2.3 0.3 1.1 0.5 1989 0.3 -0.7 0.2 0.0 -0.1 0.0 0.8 0.3 -0.3 0.5 -1.3 0.4 1990 2.2 -1.1 -0.2 0.0 0.4 -1.2 0.4 -1.0 -0.5 1.6 1.3 0.1 1991 0.5 0.1 -1.3 -0.6 -1.9 -3.2 0.8 1.7 -1.2 -0.6 -0.6 -1.2 1992 -0.3 -0.4 -1.6 0.4 -0.2 -0.1 0.7 -0.6 -0.1 0.1 -1.3 0.3 1993 -1.5 -1.2 -1.3 -0.5 1.4 -1.4 0.2 -1.4 -0.6 -1.4 1.3 0.6 1994 -0.3 0.9 -1.4 -0.2 -0.3 -0.1 -1.0 1.3 -2.6 -1.0 1.1 0.2 1995 1.1 0.0 -0.4 -0.3 -0.4 -0.7 0.0 1.3 1.3 -0.6 1.4 -0.5