| Date | Value |
|---|---|
| Jan 26, 2014 13:47 | 10 ppm |
| Nov 5, 2013 19:15 | 15 ppm |
| Oct 24, 2013 17:44 | 15 ppm |
| Oct 21, 2013 19:58 | 15 ppm |
| Oct 20, 2013 19:22 | 35 ppm |
| Oct 19, 2013 17:20 | 4 ppm |
| Oct 17, 2013 01:03 | 35 ppm |
| Oct 15, 2013 21:37 | 35 ppm |
| Oct 13, 2013 19:26 | 50 ppm |
| Oct 1, 2013 14:58 | 0.00 ppm |