Notes. Main parameters of the stars in our sample and activity from our analysis. V-K values are from the CDS when available, or derived from the relationship between G-K versus V-K when V is not available (indicated by “d”, concerns 15 stars), as in Mignon et al. (2023b). T_eff values are from the CDS. When missing, the reported value, indicated by (*), means that we have estimated it from a T_eff versus V-K linear law (see text, concerns 10 stars). The metallicities (FeH) are from Casagrande et al. (2008), Neves et al. (2013), Kordopatis et al. (2013), Gaidos et al. (2014), Gáspár et al. (2016), Houdebine et al. (2016), Aganze et al. (2016), Passegger et al. (2018), Maldonado et al. (2019), Hojjatpanah et al. (2019), Kuznetsov et al. (2019), Maldonado et al. (2020), Birky et al. (2020), Steinmetz et al. (2020), Hojjatpanah et al. (2020), Jönsson et al. (2020), Sarmento et al. (2021), Buder et al. (2021), Marfil et al. (2021), and Hubbard-James et al. (2022). The number of nights, average log R′_HK, average of the three indices and their rms are from the present paper. The flag (S) indicates if the star is in the subsample with more than four seasons (Sect. 2.4). Only the beginning of the table is shown here, the full table is available at the CDS.