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Click symbol for equation conductance quantum  Numerical value  7.748 091 729...  x 10-5 S  Standard uncertainty  (exact)   Relative standard uncertainty  (exact)  Concise form  7.748 091 729... x 10-5 S       Click here for correlation coefficient of this constant with other constants Source: 2018 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant