| Date | Value |
|---|---|
| Mar 16, 2024 18:59 | 400 ppm |
| Feb 29, 2024 18:20 | 340 ppm |
| Feb 24, 2024 20:06 | 350 ppm |
| Jan 22, 2023 19:25 | 454 ppm |
| Jan 7, 2023 20:37 | 446 ppm |
| Jun 4, 2021 15:45 | 420 ppm |
| May 30, 2021 09:14 | 435 ppm |
| May 23, 2021 08:59 | 410 ppm |
| May 16, 2021 10:48 | 420 ppm |
| May 1, 2021 16:32 | 430 ppm |
| Apr 18, 2021 10:38 | 435 ppm |
| Apr 10, 2021 16:55 | 400 ppm |
| Mar 28, 2021 18:32 | 420 ppm |
| Mar 25, 2021 09:40 | 410 ppm |