| Date | Value |
|---|---|
| Mar 12, 2024 02:30 | 40 ppm |
| Jun 11, 2022 18:53 | 0.00 ppm |
| Apr 3, 2022 20:51 | 0.00 ppm |
| Mar 30, 2022 01:52 | 0.00 ppm |
| Mar 19, 2022 19:44 | 0.00 ppm |
| Mar 18, 2022 23:42 | 0.00 ppm |
| Nov 24, 2020 22:13 | 2 ppm |
| Jul 4, 2017 16:35 | 10 ppm |
| Sep 6, 2016 18:40 | 12 ppm |
| Apr 12, 2016 20:11 | 5 ppm |
| Mar 24, 2016 15:03 | 0.00 ppm |
| Mar 13, 2016 17:45 | 0.00 ppm |
| Mar 9, 2016 18:00 | 0.00 ppm |