Station operated in cooperation with Cleveland-Cliffs Inc. and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1977) | 25th percen- tile | Mean | Median | Most Recent Instantaneous Value Sep 20 | 75th percen- tile | Max (1994) |
|---|---|---|---|---|---|---|
| 0.07 | 10 | 17 | 19 | 21.3 | 23 | 29.0 |