Figure 4

Correlations between radionuclides and stable elements at sites (a) A and (b) B. The units for 90Sr and 137Cs are mBq m−2, and those for the stable elements are mg m−2. The red points reveal that the correlations are significant (p < 0.05) based on the correlation coefficient values. The gray points show that the correlations are not significant (p ≥ 0.05).