Fig. 3.
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Frequency groups throughout the entire 15 days of observations. Each panel corresponds to a three-day segment. Each line in a group represents a frequency peak in the power spectrum, as explained in Sect. 2.2. The light grey region at JD 206.7 corresponds to the power spectrum analysed in Fig. 2 (top panel), while the filled region at JD 217.7 represents the bottom panel of Fig. 2.
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