Year | CoP | Boltzmann’s constant | Achieved relative uncertainty | Absolute uncertainty | kb possible interval of placing* | Calculated comparative uncertainty | Calculated comparative uncertainty | Ref. | |
k・1023 | rk・106 | Δk・1029 | uk・1029 | εk' = Δk/uk IACU | εk'' = Δk/Sk IARU | ||||
m2 kg/(s2 K) | m2 kg/ (s2 K) | m2 kg/ (s2 K) | |||||||
2012 | LMТQ I | 1.38066509 | 7.9 | 1.09 | 6.7 | 1.6279 | 4.5983 | [24] | |
2013 | 1.38066509 | 4.3 | 5.94 | 1.2 | 4.9473 | 2.5029 | [25] | ||
2015 | 1.38066509 | 4.0 | 5.52 | 11.0 | 0.5020 | 2.3282 | [26] | ||
2017 | 1.3806482 | 1.9 | 2.62 | 5.2 | 0.5044 | 1.1059 | [27] | ||
2018 | 1.38064904 | 0.37 | 0.51 | 1.0 | 0.5184 | 0.2154 | [21] | ||
2018 | 1.3806490 | 0.37 | 0.51 | 1.0 | 0.5184 | 0.2154 | [28] | ||