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:
| Year | Time | Windspeed | City | Date |  |
| --- | --- | --- | --- | --- | --- |
| 2000 | 11.45 | −2.3 | Kingston | 13 March | The progression of Powell's 100 m seasons' best times |
| 2001 | 10.50 | 0.40 | Kingston | 22 June | The progression of Powell's 100 m seasons' best times |
| 2002 | 10.12 | 1.30 | Rovereto | 28 August | The progression of Powell's 100 m seasons' best times |
| 2003 | 10.02 | 0.80 | Brussels | 5 September | The progression of Powell's 100 m seasons' best times |
| 2004 | 9.87 | 0.20 | Brussels | 3 September | The progression of Powell's 100 m seasons' best times |
| 2005 | 9.77 | 1.60 | Athens | 14 June | The progression of Powell's 100 m seasons' best times |
| 2006 | 9.77 | 1.00 | Zürich | 15 August | The progression of Powell's 100 m seasons' best times |
| 2007 | 9.74 | 1.70 | Rieti | 9 September | The progression of Powell's 100 m seasons' best times |
| 2008 | 9.72 | 0.20 | Lausanne | 2 September | The progression of Powell's 100 m seasons' best times |
| 2009 | 9.82 | 1.40 | Szczecin | 15 September | The progression of Powell's 100 m seasons' best times |
| 2010 | 9.82 | 0.60 | Rome | 10 June | The progression of Powell's 100 m seasons' best times |
| 2011 | 9.78 | 1.00 | Lausanne | 30 June | The progression of Powell's 100 m seasons' best times |
Question:
what is the average windspeed brussels had?
Answer:
0.50