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electron gyromagnetic ratio over 2 pi  Value  28 024.952 66 MHz T-1  Standard uncertainty       0.000 62 MHz T-1   Relative standard uncertainty   2.2 x 10-8  Concise form  28 024.952 66(62) MHz T-1       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