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*** Atmospheric CO2 concentrations (ppmv) derived from flask air   ***
*** samples collected at Macquarie Island, Australia               ***
*** Source: L.P. Steele                                            ***
***              P.B. Krummel                                      ***  
***              R. L. Langenfelds,                                ***
***              Atmospheric, Research, Commonwealth Scientific,   ***
***              And Industrial Research Organisation,             ***
***              Aspendale, Victoria,                              *** 
***              Australia  3195                                   ***                   
***                                                                ***   
*** December 2002                                                  ***
***                                                                ***
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	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Ann. Avg.
1991			352.14	352.57	353.25	353.36	353.43	353.87	354.09	353.86	353.59	353.43	
1992	352.92	352.71	352.92	353.04	353.3	353.83	354.25	354.54	354.89	354.95	354.59	353.87	353.82
1993	353.37	353.65	354.04	354.38	354.65	354.83	355.28	355.73	355.86	355.72	355.56	355.29	354.86
1994	355.08	355.04	354.89	355.08	355.44	355.7	356.16	356.91	357.35	357.35	357.22	356.78	356.08
1995	356.66	357.16	357.63	357.73	357.63	357.8	357.99	358.26	358.76	358.98	359	358.94	358.05
1996	358.78	358.61	358.96	359.33	359.34	359.58	359.85	359.99	360.16	360.38	360.26	359.92	359.60
1997	359.77	359.78	360.05	360.87	361.44	361.4	361.45	361.5	361.47	361.75	361.89	361.58	361.08
1998	361.6	362.05	362.31	362.44	362.94	363.47	363.88	364.44	364.8	364.83	364.77	364.52	363.50
1999	364.26	364.41	364.57	364.63	364.87	365.22	365.59	365.97	366.21	366.29	366.3	366.03	365.36
2000	365.59	365.66	365.92	365.84	365.99	366.4	366.87	367.51	367.75	367.59	367.51	367.35	366.67
2001	367.14	367.09	367.2	367.25	367.42	368.04	368.56	368.84	369.19	369.46	369.39	369.15	368.23

Monthly values are expressed in parts per million (ppm) and reported in the WMO CO2 
Mole Fraction Scale (Zhao et al., 1997, J. Geophys. Res. 102 , 5885-5894). Monthly 
values are calculated as the mean of the daily values from a smooth curve fit to the data 
using 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.