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Table 2

Activity indexes for 16 Cyg A, B, and the Sun.

Sun 0.1909 ± 0.0019
16 Cyg A 0.1871 ± 0.0021
16 Cyg B 0.1889 ± 0.0021

16 Cyg AB 0.1880 ± 0.0010

Notes. The last row is the mean activity level of 16 Cyg AB.

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