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conductance quantum  Value  7.748 091 7346 x 10-5 S  Standard uncertainty  0.000 000 0025 x 10-5 S   Relative standard uncertainty   3.2 x 10-10  Concise form  7.748 091 7346(25) x 10-5 S       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