The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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von Klitzing constant
 $R_{\rm K}$
 Value  25 812.807 4555 OmegaRed
 Standard uncertainty       0.000 0059 Omega
  Relative standard uncertainty   2.3 x 10-10
 Concise form  25 812.807 4555(59) Omega    
 
Click here for correlation coefficient of this constant with other constants
Source: 2014 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
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