| Date | Value |
|---|---|
| Apr 12, 2017 09:13 | 0.01 ppm |
| Apr 6, 2017 08:23 | 0.00 ppm |
| Mar 25, 2017 12:17 | 0.01 ppm |
| Feb 18, 2017 09:32 | 0.01 ppm |
| Oct 15, 2016 09:38 | 0.01 ppm |
| Oct 12, 2016 09:02 | 0.01 ppm |
| Sep 30, 2016 04:22 | 0.01 ppm |
| Sep 24, 2016 14:44 | 0.00 ppm |
| Sep 10, 2016 15:21 | 0.01 ppm |
| May 2, 2016 09:40 | 0.00 ppm |
| Apr 23, 2016 06:15 | 0.00 ppm |
| Apr 18, 2016 16:12 | 0.00 ppm |
| Apr 15, 2016 09:52 | 0.00 ppm |
| Apr 15, 2016 05:19 | 0.00 ppm |