Fig. 2.
Absorption strengths of He I λ5876 (left panels) and He I λ7065 (right panels). Top panels: individual measurements, with multiple measurements of the same SN connected by solid lines. Middle panels: averages of the SE SN subtypes, with error bars representing the standard deviation of the mean. Dashed lines outline the standard deviations of the samples for each subtype in matching color. Bottom panels: CDFs measured between −10 and +10 d
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