| Date | Value |
|---|---|
| Oct 9, 2016 14:46 | 40 ppm |
| Oct 1, 2016 13:22 | 40 ppm |
| Sep 24, 2016 21:18 | 40 ppm |
| Sep 13, 2016 20:40 | 40 ppm |
| Sep 10, 2016 01:01 | 40 ppm |
| Sep 6, 2016 21:09 | 20 ppm |
| Sep 5, 2016 01:09 | 40 ppm |
| Sep 3, 2016 12:13 | 30 ppm |
| Sep 1, 2016 19:18 | 40 ppm |
| Aug 27, 2016 11:41 | 20 ppm |
| Aug 22, 2016 21:14 | 20 ppm |