| Date | Value |
|---|---|
| Jan 16, 2020 21:53 | 30 ppm |
| Oct 26, 2019 12:43 | 10 ppm |
| Sep 29, 2019 08:17 | 5 ppm |
| Sep 2, 2019 11:32 | 6 ppm |
| Aug 31, 2019 21:48 | 0.00 ppm |
| Aug 31, 2019 17:13 | 10 ppm |
| Aug 16, 2019 15:01 | 0.00 ppm |
| Aug 14, 2019 11:48 | 0.00 ppm |
| Aug 13, 2019 17:45 | 0.00 ppm |
| Aug 9, 2019 12:03 | 0.00 ppm |
| Jul 29, 2019 11:51 | 10 ppm |
| Jul 27, 2019 17:58 | 5 ppm |
| Jul 26, 2019 23:37 | 9 ppm |
| Jul 23, 2019 14:46 | 40 ppm |
| Jul 21, 2019 23:00 | 1 ppm |