| Date | Value |
|---|---|
| Jul 5, 2014 22:08 | 0.00 ppm |
| Jun 24, 2013 07:50 | 0.00 ppm |
| Jun 15, 2013 11:06 | 0.00 ppm |
| Mar 18, 2013 11:25 | 0.00 ppm |
| Mar 2, 2013 10:01 | 0.00 ppm |
| Feb 8, 2013 07:42 | 0.00 ppm |
| Jan 29, 2013 07:24 | 0.00 ppm |
| Jan 20, 2013 06:30 | 0.00 ppm |
| Jan 15, 2013 09:25 | 0.00 ppm |
| Jan 11, 2013 08:06 | 0.00 ppm |
| Jan 8, 2013 06:27 | 0.00 ppm |