Super-posed epoch plots of ¹⁰Be concentration over solar cycles. Panel (a) is simply Figure 2f, repeated for reference. Panels (b) and (d) show solar cycles numbered without the addition of SC4b, while panels (c) and (f) renumber the cycles prior to 1800 to include SC4b. Panels (b) and (c) only show data from the period 1712 to 1800, while panels (d) and (e) cover 1712–2014 (i.e., include the data shown in panel a).