Station operated in cooperation with Cleveland-Cliffs Inc. and the Michigan Department of Environment, Great Lakes and Energy.
| Min (1974) | 25th percen- tile | Most Recent Instantaneous Value Jan 3 | Mean | Median | 75th percen- tile | Max (1990) |
|---|---|---|---|---|---|---|
| 0.15 | 10 | 14.2 | 15 | 15 | 21 | 26.0 |