Station operated in cooperation with Consumers Energy and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1967) | 25th percen- tile | Median | Mean | Most Recent Instantaneous Value Oct 13 | 75th percen- tile | Max (1987) |
|---|---|---|---|---|---|---|
| 748 | 839 | 901 | 954 | 981 | 1030 | 1720 |