| Date | Value |
|---|---|
| May 14, 2021 21:25 | 7.44 pH |
| Jan 29, 2021 17:15 | 7.44 pH |
| May 11, 2020 16:54 | 7.4 pH |
| Apr 13, 2020 16:34 | 7.8 pH |
| Mar 9, 2020 17:49 | 7.8 pH |
| Feb 10, 2020 18:37 | 8.0 pH |
| Jan 13, 2020 18:59 | 8.2 pH |
| May 17, 2017 10:07 | 8.4 pH |
| May 11, 2017 14:24 | 7.4 pH |
| Apr 28, 2017 14:09 | 8.1 pH |
| Apr 20, 2017 12:36 | 7.6 pH |
| Apr 19, 2017 11:23 | 7.6 pH |