| Date | Value |
|---|---|
| Dec 13, 2013 22:33 | 0.00 ppm |
| Dec 9, 2013 10:31 | 0.00 ppm |
| Dec 3, 2013 14:58 | 0.00 ppm |
| Nov 30, 2013 21:06 | 0.00 ppm |
| Nov 29, 2013 22:00 | 0.00 ppm |
| Nov 28, 2013 22:11 | 0.25 ppm |
| Nov 27, 2013 19:29 | 0.50 ppm |
| Nov 26, 2013 20:49 | 1 ppm |
| Nov 25, 2013 19:53 | 1 ppm |