| Date | Value |
|---|---|
| Dec 16, 2023 17:39 | 440 ppm |
| Nov 1, 2023 14:17 | 440 ppm |
| Oct 29, 2023 19:13 | 480 ppm |
| Sep 4, 2023 17:43 | 420 ppm |
| Apr 5, 2023 20:16 | 440 ppm |
| Mar 25, 2023 16:24 | 420 ppm |
| Mar 25, 2023 16:07 | 460 ppm |
| Mar 12, 2023 16:51 | 125 ppm |
| Jan 18, 2023 00:59 | 380 ppm |