Year	d13C	d18O
1945	-23.99480057	19.42168045
1946	-24.22900009	19.48393059
1947	-24.22485924	19.11914063
1948	-24.52610016	19.4786396
1949	-24.54858017	19.29739952
1950	-25.1785202	18.23588943
1951	-24.49369049	18.25189018
1952	-23.87858009	18.72739029
1953	-24.24568939	18.99389076
1954	-24.61986923	18.98664093
1955	-23.84037971	19.45713997
1956	-23.48620033	18.70539093
1957	-23.51860046	18.15588951
1958	-23.29994011	18.51214027
1959	-23.88863945	17.96542931
1960	-22.32969093	20.03373909
1961	-23.6406002	19.77338982
1962	-23.83938026	19.09433937
1963	-23.62070084	18.66337013
1964	-24.12952042	18.96846962
1965	-23.16412926	20.48501968
1966	-23.71985054	18.41481018
1967	-24.12935066	18.52306938
1968	-23.22402	18.90983963
1969	-23.48259926	19.46459007
1970	-23.98509979	19.57887077
1971	-22.85736084	19.08613968
1972	-23.33510017	19.14397049
1973	-23.19436073	18.25069046
1974	-23.81686974	19.22224045
1975	-24.02745056	18.87101936
1976	-24.7322998	18.5350399
1977	-24.31669998	18.55806923
1978	-24.58550072	18.86808968
1979	-24.51074982	18.88636971
1980	-24.21270943	19.27289009
1981	-23.94938087	19.38616943
1982	-23.52795982	19.14369011
1983	-23.0451107	18.58448982
1984	-24.4989109	18.12851906
1985	-23.83254051	19.1647892
1986	-24.21969986	19.43081093
1987	-23.31147957	19.84613037
1988	-23.87578964	18.53790092
1989	-24.53158951	19.70892906
1990	-24.84042931	19.07295036
1991	-22.63297081	21.06547928
1992	-23.72776985	19.3092804
1993	-24.07732964	19.13405037
1994	-23.86091995	20.32983017
1995	-24.49123001	18.7996006
1996	-24.38364983	18.87962914
1997	-24.01840019	20.19264984
1998	-24.76048088	18.61717987
1999	-24.6434803	18.50419998
2000	-24.03142929	19.50172043
2001	-22.98726082	20.45303917
2002	-23.39875984	18.66304016
2003	-22.89134979	19.66270065
2004	-23.67042923	19.76936913