| Date | Value |
|---|---|
| Jul 7, 2018 07:56 | 7.2 pH |
| Jun 13, 2018 13:20 | 7.0 pH |
| Jun 7, 2018 14:56 | 7.0 pH |
| Jun 3, 2018 15:25 | 7.0 pH |
| Jun 2, 2018 08:18 | 7.0 pH |
| May 24, 2018 10:57 | 7.0 pH |
| May 21, 2018 07:03 | 7.0 pH |
| May 18, 2018 08:54 | 7.2 pH |
| May 16, 2018 10:43 | 7.5 pH |
| May 14, 2018 08:53 | 7.5 pH |
| May 13, 2018 10:17 | 7.5 pH |