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Fig. A.3.
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First-moment (radial velocity) variations of the He I 6678.151 Å line profile during Season 2017 (4 January 2017 – 16 May 2017). Each point corresponds to one separate spectrum. A typical error bar is shown in the top left corner. The 2017 spectra were obtained just before the K2 campaign. The data are available at CDS.
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