“…These problems have now been satisfactorily resolved and the point has been promoted to Table 1. There have been four, more recent, independent determinations of the triple-point temperature [6][7][8][9]202], with the result shown in Table 1. The combined standard uncertainty of the four measurements is 0,3 mK, although the between-set component of the standard deviation is 0,4 mK, indicating that there are probably still some small unresolved systematic uncertainties in at least one of the experiments.…”