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:
| Episode | Broadcast date | Run time | Viewers (in millions) | Archive |
| --- | --- | --- | --- | --- |
| " Part One " | 15December1973 | 24:15 | 8.7 | PAL 2" colour videotape |
| " Part Two " | 22December1973 | 24:10 | 7.0 | PAL 2" colour videotape |
| " Part Three " | 29December1973 | 23:30 | 6.6 | PAL 2" colour videotape |
| " Part Four " | 5January1974 | 24:57 | 10.6 | PAL 2" colour videotape |
| [ dead link ] | [ dead link ] | [ dead link ] | [ dead link ] | [ dead link ] |
Question:
On the episode that had a run time of 24:57, how many million viewers were there?
Answer:
10.6