| Date | Value |
|---|---|
| Sep 12, 2016 20:16 | 10 ppm |
| Sep 2, 2016 16:13 | 10 ppm |
| Aug 28, 2016 16:27 | 2 ppm |
| Aug 20, 2016 15:42 | 10 ppm |
| Aug 15, 2016 16:07 | 2 ppm |
| Aug 1, 2016 12:39 | 5 ppm |
| Jul 27, 2016 15:17 | 5 ppm |
| Jul 16, 2016 07:01 | 25 ppm |
| Jul 9, 2016 04:37 | 25 ppm |
| Jul 2, 2016 05:52 | 25 ppm |
| Jun 27, 2016 14:03 | 25 ppm |
| Jun 23, 2016 13:14 | 30 ppm |
| Jun 14, 2016 15:15 | 30 ppm |