| Date | Value |
|---|---|
| Jan 16, 2020 21:46 | 0.00 ppm |
| Oct 26, 2019 12:33 | 0.00 ppm |
| Sep 29, 2019 08:05 | 0.00 ppm |
| Sep 2, 2019 11:31 | 0.00 ppm |
| Aug 31, 2019 21:47 | 0.00 ppm |
| Aug 31, 2019 17:09 | 0.00 ppm |
| Aug 16, 2019 14:59 | 0.00 ppm |
| Aug 14, 2019 11:46 | 0.00 ppm |
| Aug 13, 2019 17:38 | 0.00 ppm |
| Aug 9, 2019 11:53 | 0.00 ppm |
| Jul 29, 2019 11:42 | 0.00 ppm |
| Jul 26, 2019 23:31 | 0.00 ppm |
| Jul 23, 2019 14:43 | 2 ppm |
| Jul 21, 2019 22:40 | 2 ppm |