| Date | Value |
|---|---|
| Jun 4, 2023 21:49 | 0.24 ppm |
| May 19, 2023 16:13 | 0.42 ppm |
| May 3, 2023 01:11 | 0.05 ppm |
| Apr 23, 2023 23:15 | 0.07 ppm |
| Apr 15, 2023 00:12 | 0.10 ppm |
| Apr 8, 2023 16:23 | 0.09 ppm |
| Apr 2, 2023 00:23 | 0.26 ppm |
| Mar 28, 2023 01:03 | 0.18 ppm |
| Mar 25, 2023 17:11 | 0.16 ppm |
| Mar 18, 2023 13:05 | 0.12 ppm |
| Mar 17, 2023 18:09 | 0.33 ppm |