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Table 5
Bayesian information criterion (BIC) and deviance (χ2) values of models for stellar flux variation.
| Species | Epochs | Sinusoidal | Constant | ||
|---|---|---|---|---|---|
| BIC | χ2 | BIC | χ2 | ||
| C II | 2015–2018 | −65.5 | 63.3 | −25.2 | 110 |
| 2017–2018 | −56.9 | 49.1 | −51.8 | 60.8 | |
| Si III | 2015–2018 | −69.8 | 35.1 | −54.8 | 57.0 |
| 2017–2018 | −58.5 | 25.4 | −55.8 | 34.5 | |
| N V | 2015–2018 | −107 | 32.6 | −84.9 | 61.8 |
| 2017–2018 | −93.8 | 23.5 | −88.9 | 34.9 | |
| All weaker lines | 2015–2018 | −81.6 | 32.7 | −71.7 | 49.3 |
| 2017–2018 | −71.1 | 22.0 | −76.4 | 23.2 | |
| Lyman-α | 2010–2016 | −78.3 | 42.1 | −71.5 | 55.4 |
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