Value | Date | |
---|---|---|
Sat | Jul 5, 2014 15:26 | 440 ppm |
Sat | May 3, 2014 17:53 | 440 ppm |
Tue | Apr 15, 2014 22:19 | 450 ppm |
Sat | Mar 8, 2014 21:47 | 450 ppm |
Sun | Mar 2, 2014 08:52 | 480 ppm |
Sat | Feb 15, 2014 21:32 | 475 ppm |
Sun | Feb 9, 2014 19:48 | 440 ppm |
Thu | Feb 6, 2014 06:32 | 450 ppm |
Sat | Jan 11, 2014 09:33 | 500 ppm |