| Date | Value |
|---|---|
| Apr 7, 2013 11:44 | 0.00 ppm |
| Apr 3, 2013 19:41 | 0.00 ppm |
| Feb 2, 2013 21:26 | 0.00 ppm |
| Oct 11, 2012 07:49 | 0.00 ppm |
| Oct 7, 2012 19:05 | 0.00 ppm |
| Sep 30, 2012 03:53 | 0.00 ppm |
| Sep 4, 2012 06:12 | 0.00 ppm |
| Aug 17, 2012 06:52 | 0.00 ppm |
| Aug 13, 2012 06:49 | 0.00 ppm |
| Aug 4, 2012 07:01 | 0.00 ppm |
| Jul 29, 2012 07:01 | 0.00 ppm |
| Jul 5, 2012 07:07 | 0.00 ppm |