Station operated in cooperation with Consumers Energy and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1964) | 25th percen- tile | Median | Mean | 75th percen- tile | Most Recent Instantaneous Value May 27 | Max (2004) |
|---|---|---|---|---|---|---|
| 539 | 936 | 1030 | 1090 | 1190 | 1260 | 1910 |