Notes. The activity index in the second column corresponds to our fitted period, indicated in the third column. For clarity, the period is not repeated when it is similar to the period indicated above. The published periods (fifth column) may have been obtained with a different indicator, indicated next to the reference number: (1) Robertson et al. (2013), (2) Ibañez Bustos et al. (2019b), (3) Buccino et al. (2011), (4) Perdelwitz et al. (2021), and (5) Gomes da Silva et al. (2012). Buccino et al. (2011) used photometry combined to the Ca index. For Gomes da Silva et al. (2012), we used an arbitrary uncertainty of 10% of the published periods. ησ indicates to which level the fitted period agrees with the published period. The percentage is derived from the analysis of synthetic time series made for the published period (based on their estimated uncertainties) and producing a highest peak within 1σ of our fitted period (see text for more detail).