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:
| Team | Outgoing manager | Manner of departure | Date of vacancy | Replaced by | Date of appointment | Position in table |
| --- | --- | --- | --- | --- | --- | --- |
| Eupen | Danny Ost | Resigned | 4 September 2010 | Ezio Capuano | 7 September 2010 | 16th |
| Lierse | Aimé Anthuenis | Sacked | 19 September 2010 | Eric Van Meir | 19 September 2010 | 15th |
| Charleroi | Jacky Mathijssen | Sacked | 20 September 2010 (Dutch) | László Csaba | 23 September 2010 | 14th |
| Eupen | Ezio Capuano | Resigned | 24 September 2010 | Albert Cartier | 24 September 2010 | 16th |
| Zulte-Waregem | Bart De Roover | Sacked | 24 October 2010 | Hugo Broos | 27 October 2010 | 12th |
| Germinal Beerschot | Glen De Boeck | Sacked | 29 November 2010 | Jacky Mathijssen | 2 December 2010 | 13th |
| Lierse | Eric Van Meir | Caretaker replaced | 30 December 2010 | Trond Sollied | 1 January 2011 | 15th |
Question:
How many times did outgoing manager Bart de Roover vacated a position?
Answer:
1.0