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Click symbol for equation kelvin-kilogram relationship  Value  1.536 1807 x 10-40 kg  Standard uncertainty  0.000 0027 x 10-40 kg   Relative standard uncertainty   1.7 x 10-6  Concise form  1.536 1807(27) x 10-40 kg       Click here for correlation coefficient of this constant with other constants Source: 2006 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant