| Date | Value |
|---|---|
| Feb 5, 2023 18:21 | 1400 ppm |
| Oct 23, 2022 16:52 | 1400 ppm |
| Sep 23, 2022 18:53 | 1600 ppm |
| Aug 6, 2022 17:07 | 1400 ppm |
| Jul 9, 2022 15:37 | 1520 ppm |
| Jun 26, 2022 12:32 | 1560 ppm |
| Jun 17, 2022 17:23 | 1400 ppm |
| Jun 8, 2022 15:09 | 1440 ppm |
| May 20, 2022 13:20 | 1480 ppm |
| Apr 28, 2022 13:13 | 1480 ppm |
| Apr 19, 2022 14:24 | 1400 ppm |