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Table 3
Detection assessment of various atmospheric species.
| 2M0355 | 2M1425 | |||
|---|---|---|---|---|
| Species | S/N | σ | S/N | σ |
| 13CO | 12.4 | 13.4 | 3.5 | 8.0 |
| HF | 16.9 | 11.6 | 5.5 | 15.8 |
| H2S | 6.2 | 4.6 | 0.2 | 2.3 |
![$\[\mathrm{H}_{2}^{18} \mathrm{O}\]$](/articles/aa/full_html/2025/06/aa54195-25/aa54195-25-eq155.png) |
2.6 | 1.1 | 1.5 | 3.0 |
| CH4 | −0.7 | 2.2 | 5.5 | 5.5 |
| NH3 | −1.0 | −1.4 | 1.6 | 3.0 |
Notes. The S/N was determined through cross-correlation, while the significance σ was determined through additional retrievals without the species in question (see Section 3.3).
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