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*** Delta C-13 values (per mil) derived from CO2 in flask air      ***
*** samples collected at Cape Ferguson, 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											-7.713	-7.777	
1991	-7.795	-7.79	-7.814	-7.849	-7.901	-7.892	-7.814	-7.813	-7.87	-7.874	-7.849	-7.87	-7.844
1992	-7.858	-7.827	-7.813	-7.796	-7.79	-7.769	-7.787	-7.845	-7.87	-7.842	-7.843	-7.857	-7.825
1993	-7.793	-7.733	-7.727	-7.725	-7.729	-7.77	-7.797	-7.784	-7.793	-7.81	-7.809	-7.819	-7.774
1994	-7.815	-7.785	-7.775	-7.771	-7.754	-7.764	-7.801	-7.832	-7.839	-7.872	-7.903	-7.895	-7.817
1995	-7.876	-7.826	-7.849	-7.904	-7.884	-7.875	-7.864	-7.853	-7.887	-7.906	-7.908	-7.923	-7.880
1996	-7.926	-7.914	-7.907	-7.929	-7.91	-7.849	-7.847	-7.886	-7.886	-7.863	-7.877	-7.897	-7.891
1997	-7.898	-7.885	-7.861	-7.863	-7.902	-7.877	-7.829	-7.899	-7.974	-7.985	-7.98	-7.986	-7.912
1998	-7.998	-7.975	-7.966	-7.984	-7.962	-7.951	-7.957	-7.953	-7.979	-8.013	-8.028	-8.029	-7.983
1999	-7.993	-7.96	-7.943	-7.906	-7.906	-7.954	-7.966	-7.957	-7.967	-7.963	-7.965	-7.983	-7.955
2000	-7.974	-7.936	-7.92	-7.922	-7.972	-8.025	-7.975	-7.947	-8.003	-8.008	-8.018	-8.059	-7.980
2001	-7.984	-7.904	-7.932	-7.937	-7.937	-7.992	-7.983	-7.978	-7.998	-8.002	-8.046	-8.029	-7.977


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.