Station operated in cooperation with Cleveland-Cliffs Inc. and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1988) | 25th percen- tile | Mean | Median | Most Recent Instantaneous Value Aug 24 | 75th percen- tile | Max (1994) |
|---|---|---|---|---|---|---|
| 0.46 | 13 | 17 | 19 | 21.5 | 24 | 28.0 |