Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Call sign | Frequency MHz | City of license | ERP W | Class | FCC info |
| --- | --- | --- | --- | --- | --- |
| WJYA | 89.3 | Emporia, Virginia | 2000.0 | A | FCC |
| WPVA | 90.1 | Waynesboro, Virginia | 2500.0 | B1 | FCC |
| WOKG | 90.3 | Galax, Virginia | 2700.0 | C3 | FCC |
| WRXT | 90.3 | Roanoke, Virginia | 5500.0 | C2 | FCC |
| WPIM | 90.5 | Martinsville, Virginia | 4000.0 | A | FCC |
| WOKD-FM | 91.1 | Danville, Virginia | 18000.0 | C2 | FCC |
| WPIB | 91.1 | Bluefield, West Virginia | 12000.0 | C1 | FCC |
| WPIN-FM | 91.5 | Dublin, Virginia | 85.0 | A | FCC |
Question:
When the call sign is wpib, what is lowest ERP W?
Answer:
12000.0