Panel A): raw reconstructions of the sunspot numbers (mean curves) SN-14C (blue) and SN-10Be (red), compared to the recent 3 kyr reconstruction (Usoskin et al. 2014,– green curve). Panel B): first component of the singular spectrum analysis (SSA – see Appendix B) for the SN-14C (blue) and SN-10Be (red) series. The shaded areas depict the uncertainties related to the parameter L of the SSA. Panel C): same as in panel B), but for the second SSA components of the SN-14C (blue) and SN-10Be (red) series. The large dots and red stars denote times of the grand minima (see Table 1) and grand maxima (Table 2), respectively.