| Date | Value |
|---|---|
| May 12, 2022 01:29 | 0.00 ppm |
| Mar 11, 2022 02:04 | 6.7 ppm |
| Feb 19, 2022 02:05 | 15 ppm |
| Feb 10, 2022 01:59 | 8.1 ppm |
| Feb 9, 2022 01:53 | 6 ppm |
| Feb 5, 2022 16:53 | 5.9 ppm |
| Jan 27, 2022 02:16 | 3.9 ppm |
| Jan 26, 2022 18:45 | 10 ppm |
| Jan 24, 2022 02:49 | 1.3 ppm |
| Jan 17, 2022 20:00 | 5 ppm |
| Jan 14, 2022 04:26 | 7 ppm |
| Jan 11, 2022 19:24 | 5 ppm |
| Jan 9, 2022 02:14 | 1.8 ppm |
| Jan 3, 2022 03:45 | 2 ppm |
| Dec 28, 2021 02:13 | 0.00 ppm |