Station operated in cooperation with Cleveland-Cliffs Inc. and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1982) | 25th percen- tile | Mean | Most Recent Instantaneous Value Jul 18 | Median | 75th percen- tile | Max (1994) |
|---|---|---|---|---|---|---|
| 1.70 | 11 | 18 | 19.0 | 20 | 24 | 28.0 |