Column Descriptions

                                                                         
             Relative           Isotopic      Standard                   
Isotope      Atomic Mass        Composition   Atomic Weight    Notes     
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74  W   180  179.9467108(20)    0.0012(1)     183.84(1)         
        182  181.94820394(91)   0.2650(16)  
        183  182.95022275(90)   0.1431(4)   
        184  183.95093092(94)   0.3064(2)   
        186  185.9543628(17)    0.2843(19)  
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