| 31.05.2019 | qtf | empty (null) | Omni | oh6dd |
| 31.05.2019 | Data verified (manually updated field) | 2018-05-30 00:00:00 | 2019-05-31 | oh6dd |
| 31.05.2019 | Data verified by | 2018-05-30 00:00:00 | oh6dd | oh6dd |
| 30.05.2018 | qtf | empty (null) | Omni | oh6dd |
| 30.05.2018 | Data verified (manually updated field) | 2017-06-11 00:00:00 | 2018-05-30 | oh6dd |
| 30.05.2018 | Data verified by | 2017-06-11 00:00:00 | oh6dd | oh6dd |
| 11.06.2017 | qtf | empty (null) | Omni | oh6dd |
| 11.06.2017 | Data verified (manually updated field) | 2015-01-03 00:00:00 | 2017-06-11 | oh6dd |
| 11.06.2017 | Data verified by | 2015-01-03 00:00:00 | oh6dd | oh6dd |
| 03.01.2015 | qtf | empty (null) | Omni | oh6dd |
| 03.01.2015 | Remarks | empty (null) | Frequency accuracy is better than 4x10^-9 / year. | oh6dd |
| 03.01.2015 | Data verified (manually updated field) | 2013-06-01 00:00:00 | 2015-01-03 | oh6dd |
| 03.01.2015 | Data verified by | 2013-06-01 00:00:00 | oh6dd | oh6dd |
