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*** Delta C-13 values (per mil) derived from CO2 in flask air      ***
*** samples collected at Macquarie Island, Australia               ***
*** Source: C. E. Allison                                          ***
***              R. J. Francey                                     ***
***              P. B. Krummel                                     ***  
***              Atmospheric, Research, Commonwealth Scientific,   ***
***              And Industrial Research Organisation,             ***
***              Aspendale, Victoria,                              *** 
***              Australia  3195                                   ***                   
***                                                                ***   
*** September 2003                                                 ***
***                                                                ***
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	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Ann. Ave.

1990						-7.822	-7.822	-7.837	-7.846	-7.846	-7.847	-7.837	
1991	-7.829	-7.827	-7.818	-7.817	-7.816	-7.807	-7.818	-7.837	-7.827	-7.813	-7.815	-7.811	-7.820
1992	-7.805	-7.796	-7.776	-7.769	-7.78	-7.79	-7.798	-7.818	-7.835	-7.824	-7.801	-7.786	-7.798
1993	-7.748	-7.713	-7.731	-7.771	-7.784	-7.789	-7.803	-7.817	-7.826	-7.82	-7.816	-7.815	-7.786
1994	-7.8	-7.784	-7.792	-7.814	-7.823	-7.818	-7.833	-7.854	-7.859	-7.857	-7.86	-7.864	-7.830
1995	-7.851	-7.844	-7.856	-7.86	-7.842	-7.849	-7.863	-7.876	-7.906	-7.916	-7.91	-7.9	-7.873
1996	-7.88	-7.856	-7.867	-7.893	-7.902	-7.897	-7.89	-7.89	-7.884	-7.888	-7.911	-7.922	-7.890
1997	-7.912	-7.9	-7.902	-7.901	-7.898	-7.902	-7.909	-7.91	-7.903	-7.913	-7.913	-7.916	-7.907
1998	-7.934	-7.944	-7.944	-7.938	-7.936	-7.943	-7.957	-7.982	-7.998	-7.997	-8.002	-8	-7.965
1999	-7.978	-7.982	-7.986	-7.968	-7.969	-7.969	-7.969	-7.989	-7.997	-8.001	-7.99	-7.955	-7.979
2000	-7.962	-7.995	-7.98	-7.948	-7.952	-7.957	-7.966	-7.999	-8.004	-7.998	-8.014	-7.998	-7.981
2001	-7.977	-7.981	-7.96	-7.937	-7.952	-7.971	-7.982	-7.99	-7.988	-8.004	-8.009	-7.994	-7.979


Monthly values (per mil) are reported on the international VPDB-CO2 scale. Monthly values were 
calculated as the mean of the daily values from a smooth curve fit to the data using the curve-
fitting routines described by Thoning et al., 1989 (J. Geophys Res. 94, 8549-8565).  Annual 
values are the arithmetic means of the 12 monthly values.