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This article has 2 errata:
[https://doi.org/10.1051/0004-6361/201935428e]
[https://doi.org/10.1051/0004-6361/201935887e]
Table 6.
Selected ground state spectroscopic parameters(a) of this work of CH3C(O)CH3, 
C(O)CH3, and 13CH3C(O)CH3.
| Parameter | CH3C(O)CH3 |  C(O)CH3 |
13CH3C(O)CH3 |
|---|---|---|---|
| ρ1 | 0.0619535 (120) | 0.0614858 (41) | 0.060458 (57) |
| ρ2 | 0.061811 (58) | ||
| β1/° | 25.5065 (76) | 25.7140 (31) | 29.5967 (77) |
| 180 ° −β2/° | 21.2614 (76) | ||
| A/MHz | 10165.217780 (280) | 10164.005782 (145) | 10083.03218 (58) |
| B/MHz | 8515.163068 (248) | 8516.083092 (104) | 8277.50617 (44) |
| C/MHz | 4910.198777 (209) | 4910.235399 (107) | 4811.468965 (174) |
| ΔJ/kHz | 4.854449 (219) | 4.852046 (73) | 4.5557 (147) |
| ΔJK/kHz | −3.17067 (60) | −3.192449 (194) | −2.865 (74) |
| ΔK/kHz | 9.79105 (88) | 9.85055 (33) | 9.456 (60) |
| δJ/kHz | 2.038605 (99) | 2.0381002 (265) | 1.8855 (77) |
| δK/kHz | −0.60720 (39) | −0.619619 (127) | −0.226 (31) |
| ϵ10/MHz | −764.737 (38) | −763.9260 (53) | −759.25 (81) |
| ϵ01/MHz | −766.18 (79) | ||
| ϵ20/MHz | 0.77490 (283) | 0.76612 (173) | 0.574 (45) (b) |
| ϵ02/MHz | 0.574 (45) | ||
| ϵ11/MHz | 1.0902 (95) | 1.1059 (61) | 1.0000 (212) |
| ϵ1 − 1/MHz | 0.07346 (262) | 0.08853 (176) | 0.08630 (143) |
| No. of transitions fit | 2181 | 9715 | 110 |
| No. of lines fit | 1862 | 5870 | 72 |
| Standard deviation (c) | 0.95 | 1.29 | 0.93 |
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