Upper panel: equivalent widths of the blue wing in He i 5876 Å as a function of rotational phase. Lower panel: equivalent widths of the red wings in He i 5876 Å (squares), He i 6678 Å (diamonds) and Hβ (open circles) as a function of phase. The EWs from Hβ are divided by 10 to match the He lines. Dashed curves represent polynomial fits to the distributions.
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