Column Descriptions

                                                                         
             Relative           Isotopic      Standard                   
Isotope      Atomic Mass        Composition   Atomic Weight    Notes     
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70  Yb  168  167.9338896(22)    0.00123(3)    173.054(5)       g
        170  169.9347664(22)    0.02982(39) 
        171  170.9363302(22)    0.1409(14)  
        172  171.9363859(22)    0.2168(13)  
        173  172.9382151(22)    0.16103(63) 
        174  173.9388664(22)    0.32026(80) 
        176  175.9425764(24)    0.12996(83) 
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