| Date | Value |
|---|---|
| Sep 1, 2024 04:48 | 1320 ppm |
| Apr 15, 2024 03:48 | 1380 ppm |
| Mar 19, 2024 00:44 | 1320 ppm |
| Sep 25, 2023 20:56 | 1300 ppm |
| Sep 18, 2023 01:40 | 1300 ppm |
| Jun 30, 2023 22:56 | 1200 ppm |
| Nov 21, 2022 20:35 | 1350 ppm |
| Feb 10, 2022 02:01 | 1410 ppm |
| Jan 29, 2021 05:04 | 1320 ppm |