| Date | Value |
|---|---|
| Apr 3, 2022 15:01 | 7.8 ppm |
| Mar 31, 2022 00:04 | 8.7 ppm |
| Mar 27, 2022 23:01 | 8.4 ppm |
| Mar 19, 2022 23:14 | 7 ppm |
| Mar 12, 2022 18:24 | 7.3 ppm |
| Mar 10, 2022 22:58 | 7.7 ppm |
| Feb 26, 2022 19:08 | 9.5 ppm |
| Feb 20, 2022 16:02 | 9.8 ppm |
| Feb 12, 2022 16:20 | 9.5 ppm |
| Feb 5, 2022 15:39 | 10.1 ppm |
| Jan 29, 2022 16:03 | 7.3 ppm |
| Jan 22, 2022 20:00 | 8.7 ppm |
| Jan 16, 2022 23:12 | 6.2 ppm |
| Jan 8, 2022 16:24 | 6.2 ppm |