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*** Atmospheric CO2 concentrations from Sable Island (ppmv)    	***
***							        ***
*** September 1994						***
***						        	***
***  Source:Neil B.A. Trivett                                   ***
***         Vicky C. Hudec                                      ***
***         Atmospheric Environment Service                     ***
***         Downsview, Ontario M3H 5T4 Canada                   ***
***                                                             ***
***         C.S. Wong                                           ***
***         Marine Carbon Research Centre                       ***
***         Institute of Ocean Sciences                         ***
***         Sidney, British Columbia V8L 4B2 Canada             ***
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Year  Jan.   Feb.    Mar.   Apr.   May   Jun.   Jul.   Aug.   Sep.   Oct.   Nov.   Dec.  Annual
1975 -99.99 -99.99 336.04 336.63 335.01 -99.99 -99.99 -99.99 -99.99 330.51 336.93 335.61 -99.99
1976 -99.99 338.22 337.10 338.33 -99.99 -99.99 -99.99 322.64 325.21 333.63 333.20 334.98 -99.99
1977 337.20 337.31 339.70 337.27 337.45 331.12 330.48 327.53 328.60 334.22 335.99 337.03 334.49
1978 337.39 340.03 342.21 344.53 338.02 334.00 328.95 328.99 325.67 335.83 339.94 339.78 336.28
1979 342.17 340.05 341.09 -99.99 340.71 338.95 330.28 330.20 328.57 -99.99 -99.99 339.94 -99.99
1980 343.36 342.36 342.55 344.09 342.03 340.37 337.65 329.09 331.45 340.53 343.42 342.02 339.91
1981 -99.99 354.25 346.61 342.31 -99.99 -99.99 -99.99 328.11 340.49 339.33 340.02 -99.99 -99.99
1982 348.87 347.06 346.94 347.25 345.08 339.20 340.54 331.00 336.38 341.00 339.91 -99.99 -99.99
1983 -99.99 -99.99 347.89 -99.99 347.30 344.11 340.60 -99.99 333.22 341.10 343.97 347.73 -99.99
1984 350.03 346.66 350.24 349.83 350.22 346.14 343.88 336.77 -99.99 341.67 347.32 350.66 -99.99
1985 349.82 354.66 351.94 349.11 349.47 344.48 344.05 337.24 337.19 344.35 347.12 349.70 346.59
1986 353.08 351.14 350.50 352.29 349.25 347.78 343.22 349.90 340.03 346.82 348.91 352.58 348.79
1987 350.47 352.49 352.74 350.69 352.49 -99.99 342.01 343.07 341.34 345.18 354.02 356.50 -99.99
1988 358.72 356.76 355.92 358.05 354.78 351.70 347.78 342.94 347.05 352.25 353.02 356.66 352.97
1989 364.09 359.25 359.88 360.11 360.94 354.81 354.66 342.45 348.60 356.38 358.01 357.18 356.36
1990 361.62 359.95 357.92 358.79 355.69 354.76 357.51 346.82 347.90 352.82 358.05 360.39 356.02
1991 359.74 361.09 -99.99 360.68 361.23 357.21 359.12 348.91 351.52 -99.99 -99.99 361.09 -99.99
1992 -99.99 363.84 -99.99 360.96 362.29 361.32 355.90 -99.99 350.63 356.91 -99.99 362.47 -99.99
1993 361.89 -99.99 364.21 362.82 -99.99 -99.99 351.84 -99.99 352.46 360.87 -99.99 -99.99 -99.99

Atmospheric CO2 concentrations are expressed in parts per million by volume (ppmv) and reported
in the Scripps Institution of Oceanography X85 manometric mole fraction scale. Monthly values
represent in arithmetic means of the paired flask values for a given month as calculated by CDIAC.
Annual means are the arithmetic means of the monthly values and are calculated by CDIAC. Annual
means are provided only for years with complete monthly records.