| Date | Value |
|---|---|
| Jan 8, 2017 13:48 | 0.00 ppm |
| Dec 11, 2016 13:01 | 0.00 ppm |
| Dec 3, 2016 15:17 | 0.00 ppm |
| Nov 27, 2016 13:07 | 0.00 ppm |
| Nov 20, 2016 13:51 | 0.25 ppm |
| Nov 15, 2016 16:50 | 0.50 ppm |
| Nov 14, 2016 18:11 | 1 ppm |
| Oct 31, 2016 20:48 | 0.00 ppm |
| Oct 29, 2016 16:42 | 0.00 ppm |
| Oct 27, 2016 21:29 | 0.50 ppm |
| Oct 25, 2016 17:18 | 0.50 ppm |
| Oct 23, 2016 13:19 | 0.50 ppm |