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Table 2 Er and Yb isotopic compositions and ratios reported in the literature

From: Mass fractionation of Rb and Sr isotopes during laser ablation-multicollector-ICPMS: in situ observation and correction

Amount fraction (Chang et al. 1998)
  162Er 164Er 166Er 167Er 168Er 170Er
 Mean 0.001387 0.016009 0.335027 0.228691 0.269784 0.149102
 Error 0.000014 0.000010 0.000104 0.000026 0.000051 0.000103
Isotopic ratio (Vervoort et al. 2004, normalized using 172Yb/174Yb = 0.68321)
  168Yb/171Yb 170Yb/171Yb 172Yb/171Yb 173Yb/171Yb 176Yb/171Yb 176Yb/173Yb
 Mean 0.008876 0.212562 1.531736 1.132338 0.901691 0.796310
 Error 0.000008 0.000009 0.000046 0.000050 0.000075 0.000034