| Date | Value |
|---|---|
| Feb 1, 2023 01:02 | 465 ppm |
| Jan 31, 2023 01:04 | 400 ppm |
| Jan 10, 2023 23:10 | 460 ppm |
| Jan 1, 2023 20:47 | 350 ppm |
| Dec 1, 2022 23:38 | 430 ppm |
| Oct 25, 2022 22:29 | 420 ppm |
| Oct 17, 2022 22:47 | 440 ppm |
| Oct 5, 2022 21:27 | 440 ppm |
| Sep 7, 2022 00:21 | 430 ppm |
| Jul 16, 2022 21:23 | 380 ppm |
| May 4, 2022 21:02 | 400 ppm |
| Apr 4, 2022 17:01 | 470 ppm |
| Mar 8, 2022 00:21 | 420 ppm |
| Dec 28, 2021 07:20 | 450 ppm |
| Oct 5, 2021 15:53 | 450 ppm |