| Date | Value |
|---|---|
| Sep 12, 2019 14:18 | 0.00 ppm |
| May 12, 2019 13:39 | 0.00 ppm |
| Jan 28, 2019 19:36 | 0.00 ppm |
| Dec 24, 2018 13:53 | 0.00 ppm |
| Dec 15, 2018 16:36 | 0.00 ppm |
| Jun 12, 2018 18:27 | 0.00 ppm |
| May 20, 2018 09:22 | 0.00 ppm |
| Apr 21, 2018 09:06 | 0.00 ppm |
| Sep 3, 2017 11:30 | 0.00 ppm |
| Aug 31, 2017 13:35 | 0.00 ppm |