Station operated in cooperation with Consumers Energy and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1958) | 25th percen- tile | Median | Most Recent Instantaneous Value May 15 | Mean | 75th percen- tile | Max (1978) |
|---|---|---|---|---|---|---|
| 219 | 266 | 300 | 317 | 328 | 346 | 654 |