| Date | Value |
|---|---|
| Nov 4, 2017 17:00 | 0.80 ppm |
| Nov 4, 2017 00:00 | 0.30 ppm |
| Nov 2, 2017 23:00 | 0.10 ppm |
| Nov 1, 2017 22:00 | 0.30 ppm |
| Oct 31, 2017 22:00 | 0.80 ppm |
| Oct 30, 2017 20:00 | 0.25 ppm |
| Oct 22, 2017 21:00 | 0.80 ppm |
| Oct 21, 2017 21:00 | 0.80 ppm |
| Oct 20, 2017 21:00 | 0.80 ppm |
| Oct 17, 2017 21:00 | 0.00 ppm |
| Oct 16, 2017 21:00 | 0.00 ppm |
| Oct 15, 2017 21:00 | 0.00 ppm |
| Oct 14, 2017 21:00 | 0.00 ppm |
| Oct 13, 2017 21:00 | 0.00 ppm |