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*** Kermadec Islands, Raoul Island                              ***
*** atmospheric 13C/12C (permil) averages of data               ***
*** adjusted to the 15th of each month                          ***
*** Source: C.D. Keeling, A.F. Bollenbacher, and T.P. Whorf     ***
***         Carbon Dioxide Research Group                       ***
***         Scripps Institution of Oceanography (SIO)           ***
***         University of California                            ***
***         La Jolla, California USA 92093-0444                 ***
***                                                             ***
*** March 2005                                                  ***
***                                                             ***
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Year   Jan     Feb     Mar     Apr     May     Jun     Jul     Aug     Sep     Oct     Nov     Dec     Ave     FitAve

1984  99.999  99.999  -7.616  -7.648  99.999  -7.627  -7.644  99.999  99.999  99.999  99.999  99.999  99.999  99.999
1985  99.999  99.999  99.999  -7.689  -7.541  -7.601  -7.650  -7.660  -7.641  -7.649  -7.619  99.999  99.999  -7.633
1986  -7.570  -7.589  99.999  99.999  -7.629  -7.579  99.999  -7.626  99.999  -7.605  -7.614  -7.711  99.999  -7.623
1987  -7.655  99.999  99.999  -7.615  -7.702  99.999  99.999  -7.668  -7.709  99.999  -7.814  -7.774  99.999  -7.698
1988  -7.822  -7.769  -7.697  -7.779  -7.726  -7.813  -7.763  -7.735  -7.790  99.999  99.999  99.999  99.999  -7.782
1989  99.999  -7.847  -7.797  -7.827  -7.856  -7.845  -7.836  -7.705  99.999  -7.745  99.999  -7.845  99.999  -7.800
1990  99.999  99.999  99.999  -7.818  -7.806  -7.786  99.999  -7.772  99.999  -7.703  -7.710  -7.779  99.999  -7.760
1991  -7.749  99.999  99.999  -7.749  99.999  -7.729  -7.766  -7.755  -7.775  99.999  99.999  -7.840  99.999  -7.758
1992  -7.794  -7.784  99.999  -7.754  -7.747  99.999  -7.813  -7.775  -7.804  99.999  99.999  -7.777  99.999  -7.782
1993  99.999  -7.744  -7.767  99.999  -7.764  -7.772  -7.776  -7.811  -7.786  -7.806  -7.838  -7.785 (-7.785) -7.789
1994  -7.820  -7.793  -7.809  -7.791  99.999  -7.806  -7.842  -7.850  -7.840  -7.849  99.999  99.999  99.999  -7.829
1995  -7.864  99.999  99.999  99.999  99.999  99.999  99.999  99.999  99.999  99.999  99.999  99.999  99.999  -7.858
1996  99.999  -7.854  -7.845  99.999  -7.855  -7.843  -7.892  -7.905  -7.865  99.999  -7.851  -7.887  99.999  -7.867
1997  -7.889  99.999  99.999  -7.826  -7.852  -7.883  -7.847  -7.902  -7.898  99.999  99.999  -7.916  99.999  -7.889
1998  99.999  -7.937  99.999  -7.937  -7.964  -7.982  -7.971  99.999  -7.979  99.999  99.999  99.999  99.999  -7.964
1999  -8.016  99.999  -7.997  -8.002  99.999  -7.984  -8.007  -8.004  99.999  99.999  -8.004  -8.010  99.999  -7.996
2000  -8.009  -7.975  -7.957  99.999  -7.929  -7.925  -7.944  -7.979  -7.931  -8.009  -8.004  -7.998 (-7.969) -7.970
2001  99.999  -7.996  -7.991  -7.971  -7.953  99.999  -7.984  99.999  -7.964  -7.973  -7.986  -8.038  99.999  -7.987
2002  99.999  -8.100  99.999  99.999  99.999  -8.018  -8.036  -8.042  -8.081  -8.042  -8.046  99.999  99.999  -8.040
    

Monthly averages have been adjusted to the 15th of each month. Missing values are
denoted by 99.999. Annual average data have been augmented (data in parentheses) when 
only 1 or 2 months are missing for that year, by substituting the monthly fit value(s) 
for missing (99.999) data and then averaging the 12 values. The month without data is still 
shown as 99.999 while this recomputed annual average is shown in parentheses. These monthly 
data have been adjusted from January 1992 to the present by adding -0.112 per mil.