Column Descriptions

                                                                         
             Relative           Isotopic      Standard                   
Isotope      Atomic Mass        Composition   Atomic Weight    Notes     
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8   O   16   15.99491461957(17)  0.99757(16)   [15.99903,15.99977]   
        17   16.99913175650(69)  0.00038(1)  
        18   17.99915961286(76)  0.00205(14) 
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