Figure 3. Changes in the concentrations of: (a) 14C [Stuiver et al., 1998], (b) 10Be [Beer et al, 1994], and (c) 18O [Grootes and Stuiver, 1997] during the last 500 years and the calculated cross-correlation functions of their pairs: 14C and 18O (d), 10Be and 18O (e), and 14C and 10Be (f).