Fig. A.1
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Correlation between Hα indicator (absolute difference from the mean) and RV for the 44 spectra acquired prior to the HARPS fiber change. The same color-coding as in Fig. 4 applies. A linear relation (black line) was fitted to the data. An F-test against a constant model confirms the correlation to be significant with a p-value p(F-test) = 0.2% and Pearson’s r coefficient r = 0.48.
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