Station operated in cooperation with Consumers Energy and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1958) | 25th percen- tile | Median | Mean | Most Recent Instantaneous Value Jun 8 | 75th percen- tile | Max (1971) |
|---|---|---|---|---|---|---|
| 632 | 849 | 971 | 1000 | 1030 | 1120 | 1710 |