Fig. 2

Correlations (Pearson coefficients) calculated between tree-ring width indices and monthly climatic variables (mean temperature, filled bars and total precipitation, empty bars). The correlations were calculated from May of the previous year (months abbreviated and followed with “P”) to October of the current year of tree-ring formation. Dashed horizontal lines and asterisks indicate significant (P < 0.05) correlations and response coefficients, respectively. Sites’ codes are as in Table 1