Station operated in cooperation with Consumers Energy and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1969) | 25th percen- tile | Median | Mean | Most Recent Instantaneous Value Sep 23 | 75th percen- tile | Max (1986) |
|---|---|---|---|---|---|---|
| 454 | 735 | 820 | 861 | 935 | 942 | 1910 |