| Date | Value |
|---|---|
| Dec 4, 2013 19:40 | 1500 ppm |
| Dec 4, 2013 19:38 | 1500 ppm |
| Dec 4, 2013 19:35 | 1500 ppm |
| Dec 4, 2013 19:32 | 1500 ppm |
| Dec 4, 2013 19:30 | 1500 ppm |
| Dec 4, 2013 19:28 | 1500 ppm |
| Dec 4, 2013 19:25 | 1500 ppm |
| Dec 4, 2013 19:20 | 1500 ppm |
| Nov 12, 2013 16:46 | 0.00 ppm |
| Oct 10, 2013 21:33 | 1500 ppm |
| Oct 1, 2013 19:37 | 1500 ppm |
| Sep 22, 2013 10:11 | 1500 ppm |