Table 5:

Datasets described in this paper and frequency values for the dominant mode determined from a Scargle periodogram (Scargle 1982)$^{\dagger }$.
             
  t0 (y) T (d) n f (d-1) $\sigma_f$(d-1) f ($\mu$Hz)
Hipparcos 1990 1091 83 5.4871 0.00006 63.508(2)
Swiss 70 cm/P7 1997 187 20 5.4869 0.0002 63.50(5)
Mercator/P7 2002 1184 171 5.48693 0.00001 63.506(1)
ASAS 2001 2798 310 5.48691 0.00001 63.505(9)
CoRoT/SISMO 2007 156 379 785 5.48689 0.00003 63.505(7)
All 1990 6814 380 369 5.48694 0.00003 63.506(3)
$\dagger$: t0: starting time of observations, T: total timespan, n: number of measurements,
f: frequency value, $\sigma_f$: error on frequency.

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