| Date | Value |
|---|---|
| May 12, 2024 00:26 | 1440 ppm |
| Mar 2, 2024 16:14 | 1340 ppm |
| Dec 26, 2023 04:05 | 1440 ppm |
| Oct 19, 2022 14:35 | 1350 ppm |
| Mar 18, 2022 14:18 | 1350 ppm |
| Mar 6, 2022 02:55 | 1400 ppm |
| Feb 26, 2022 16:35 | 1410 ppm |
| Feb 5, 2022 18:32 | 1350 ppm |
| Jan 15, 2022 07:46 | 1350 ppm |