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 8 | Mean | Median | 75th percen- tile | Max (1975) |
|---|---|---|---|---|---|---|
| 0.18 | 8.2 | 14.4 | 15 | 15 | 20 | 27.0 |