| Date | Value |
|---|---|
| Jan 8, 2017 13:51 | 0.00 ppm |
| Dec 11, 2016 13:02 | 5 ppm |
| Dec 3, 2016 15:17 | 0.00 ppm |
| Nov 27, 2016 13:08 | 0.00 ppm |
| Nov 20, 2016 13:51 | 10 ppm |
| Nov 11, 2016 21:39 | 1 ppm |
| Nov 4, 2016 20:36 | 10 ppm |
| Nov 2, 2016 17:45 | 20 ppm |
| Oct 31, 2016 20:51 | 20 ppm |
| Oct 29, 2016 16:56 | 80 ppm |
| Oct 27, 2016 21:50 | 40 ppm |
| Oct 23, 2016 13:20 | 20 ppm |