| Date | Value |
|---|---|
| Apr 20, 2019 10:16 | 0.00 ppm |
| Mar 14, 2019 15:35 | 0.00 ppm |
| Feb 26, 2019 09:17 | 0.00 ppm |
| Feb 10, 2019 10:37 | 0.00 ppm |
| Feb 2, 2019 07:41 | 0.00 ppm |
| Jan 21, 2019 11:22 | 0.00 ppm |
| Jan 14, 2019 18:20 | 0.00 ppm |
| Jan 4, 2019 17:52 | 0.00 ppm |
| Dec 24, 2018 17:50 | 0.00 ppm |
| Dec 12, 2018 12:44 | 0.00 ppm |
| Dec 4, 2018 17:42 | 0.00 ppm |
| Nov 28, 2018 12:24 | 0.00 ppm |
| Nov 19, 2018 12:23 | 0.00 ppm |
| Nov 9, 2018 04:20 | 0.00 ppm |