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Table 2

Results of the three different analysis methods to determine the isotopologues of CO2 in the coma of 67P/Churyumov-Gerasimenko measured with ROSINA/DFMS.

13C16O2/12C18O16O Sum of the signal Co-added spectra Linear fit

19.–24. October 2014 2.95±0.17 3.01±0.03
21.–25. December 2015 2.85±0.17 3.00±0.21 2.88±0.07

12C18O16O/12C16O2 Sum of the signal Co-added spectra Linear fit

21.–25. December 2015 (4.13±0.22)×10-3 (3.93±0.28)×10-3 (4.09±0.09)×10-3

13C16O2/12C16O2 Sum of the signal Co-added spectra Linear fit

21.–25. December 2015 (1.19±0.07)×10-2 (1.18±0.08)×10-2 (1.19±0.02)×10-2

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