| Date | Value |
|---|---|
| Sep 24, 2013 17:58 | 0.00 ppm |
| Jul 22, 2013 21:40 | 0.00 ppm |
| Jun 2, 2013 20:59 | 0.00 ppm |
| Jun 1, 2013 23:00 | 0.00 ppm |
| May 31, 2013 20:56 | 0.00 ppm |
| May 30, 2013 19:25 | 0.00 ppm |
| May 29, 2013 21:01 | 0.00 ppm |
| May 28, 2013 21:51 | 0.00 ppm |
| May 25, 2013 22:56 | 0.00 ppm |
| May 24, 2013 10:49 | 0.00 ppm |
| May 22, 2013 14:24 | 0.00 ppm |
| May 21, 2013 13:19 | 0.00 ppm |
| May 20, 2013 11:15 | 0.00 ppm |
| May 19, 2013 21:08 | 0.00 ppm |