| Apr. 2022 | 2 entries revised. (CD3SH, ground state and ν12 = 1, HCOOCH3, and ν12 = 1) |
| Mar. 2019 | 1 entry added. (HCOO13CH3) |
| Jun. 2017 | 4 entries added. (Methyl mercaptan(CD3SH) and aminoacetonitrile (CH2NH, 13CH2NH, ν18 = 1, ν11 = 1, ν17 = 1))) |
| Mar. 2017 | 1 entry added. (Hydantoin(ground state and two vibrational excited states)) |
| Mar. 2016 | 1 entry added. (CH3CH2OCH3 (ground state)) 3 entries were revised. (CH3CH2OCH3 (ν28 = 1, ν29 = 1, ν30 = 1) | May 2014 | 8 entries added. (CH2NH, 13CH2NH, CH215NH, CH2ND,
NH2CH2CN, NHDCH2CN, ND2CH2CN, HCOOCH3 Vt=2) |
Mar. 2013 | System resumed. |
| Oct. 2012 | System stopped due to the server trouble. |
| Dec. 2011 | 1 entry added. (CH3CH2OCH3 (ν28 = 1)) Missing comments recovered. The data for CH3CH2OCH3 (ν29 = 1) was revised. Molecules are now sorted in the order of moleculer weight. |
| Mar. 2011 | 8 entries added. (CHD, CD2CN, CH2CP, H3PO, D3PO, H3P18O, NF (a 3Δ+), NF (b 1Σ+)) |
| Jan. 2011 | Data of HC4OH and isotopomers are temporary unavailable for remeasurement. |
| Mar. 2010 | 3 molecules added. (D3O+, SD3+, NCl (b 1Σ+)) The data for NHD was revised. |
| Sep. 2009 | 3 molecules added. (OD-, NHD, CH3CH2OCH3 (ν29 = 1)) |
| Jan. 2009 | 5 molecules added. Methanol data format has been revised. The residuals (Observed-Calculated) are added when available. |
| Oct. 1st 2008 | 1 molecule (3 isotopomers) added |
| Jun. 10th 2008 | 3 molecules added |
| May 15th 2008 | Water(4 isotopomers) added |
| March 31st 2008 | Open this homepage |