| Date | Value |
|---|---|
| May 2, 2021 09:49 | 0.00 ppm |
| Sep 24, 2020 17:48 | 0.00 ppm |
| Jul 4, 2020 09:00 | 0.00 ppm |
| Jun 4, 2020 09:30 | 0.00 ppm |
| May 11, 2020 14:00 | 0.00 ppm |
| Apr 3, 2020 14:15 | 0.00 ppm |
| Mar 1, 2020 19:55 | 0.00 ppm |
| Feb 16, 2020 21:17 | 0.00 ppm |
| Feb 2, 2020 13:55 | 0.00 ppm |