| Date | Value |
|---|---|
| Nov 4, 2020 02:19 | 10 ppm |
| Oct 19, 2020 20:45 | 20 ppm |
| Oct 12, 2020 19:21 | 5 ppm |
| Sep 28, 2020 21:28 | 5 ppm |
| Sep 13, 2020 23:43 | 5 ppm |
| Sep 9, 2020 00:30 | 25 ppm |
| Aug 18, 2020 18:21 | 0.00 ppm |
| Aug 12, 2020 00:18 | 5 ppm |
| Jul 30, 2020 15:55 | 0.00 ppm |
| Jul 22, 2020 17:59 | 5 ppm |
| Jul 20, 2020 20:22 | 10 ppm |