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:
| Graphics mode | Char cells | Pixels | Hardware colours | used (KB) | map | Type |
| --- | --- | --- | --- | --- | --- | --- |
| 0.0 | 80 × 32 | 640 × 256 | 2.0 | 20.0 | 3000–7FFF | Graphics |
| 1.0 | 40 × 32 | 320 × 256 | 4.0 | 20.0 | 3000–7FFF | Graphics |
| 2.0 | 20 × 32 | 160 × 256 | 8.0 | 20.0 | 3000–7FFF | Graphics |
| 3.0 | 80 × 25 | 640 × 200 | 2.0 | 16.0 | 4000–7FFF | Text |
| 4.0 | 40 × 32 | 320 × 256 | 2.0 | 10.0 | 5800–7FFF | Graphics |
| 5.0 | 20 × 32 | 160 × 256 | 4.0 | 10.0 | 5800–7FFF | Graphics |
| 6.0 | 40 × 25 | 320 × 200 | 2.0 | 8.0 | 6000–7FFF | Text |
Question:
What is the used (kb) when the graphics mode is 4?
Answer:
10.0