Station operated in cooperation with the Michigan Department of Environment, Great Lakes and Energy.
| Min (1941) | 25th percen- tile | Most Recent Instantaneous Value May 21 | Median | Mean | 75th percen- tile | Max (1996) |
|---|---|---|---|---|---|---|
| 70.0 | 222 | 369 | 377 | 684 | 713 | 9980 |