| Date | Value |
|---|---|
| May 30, 2016 06:00 | 5 ppm |
| May 23, 2016 11:25 | 5 ppm |
| May 22, 2016 04:15 | 5 ppm |
| May 21, 2016 05:00 | 5 ppm |
| May 16, 2016 01:21 | 5 ppm |
| May 14, 2016 13:30 | 10 ppm |
| May 9, 2016 12:35 | 5 ppm |
| May 8, 2016 10:24 | 10 ppm |
| May 5, 2016 11:45 | 5 ppm |
| May 3, 2016 11:45 | 5 ppm |
| May 1, 2016 11:45 | 5 ppm |
| Apr 27, 2016 11:45 | 10 ppm |