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Table 1
Density ratios in the coma of 67P/C-G at Rosetta with respect to H2O.
| Ratio | Value | Analyzed period |
|---|---|---|
| Si/H2O | ~2 × 10−5 | Entire mission, Fig. 6 |
| Na/H2O | ~3 × 10−6 | 26–29 July 2015 |
| Fe/H2O | ~5 ×10 −8 | 26–29 July 2015 |
| Ni/H2O | <5 × 10−8 | 26–29 July 2015 |
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