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atomic mass constant energy equivalent  Value  1.492 417 954 x 10-10 J  Standard uncertainty  0.000 000 066 x 10-10 J   Relative standard uncertainty   4.4 x 10-8  Concise form  1.492 417 954(66) x 10-10 J       Click here for correlation coefficient of this constant with other constants Source: 2010 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant