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:
| Rank | Rider | Team | Speed | Time |
| --- | --- | --- | --- | --- |
| 1.0 | Malcolm Uphill | Triumph | 97.71mph | 1:55.51.4 |
| 2.0 | Peter Williams | Norton | 97.69mph | 1:55.52.6 |
| 3.0 | Ray Pickrell | Norton | 95.86mph | 1:58.05.2 |
| 4.0 | Tom Dickie | Triumph | 94.14mph | 2:00.15.0 |
| 5.0 | Bob Heath | BSA | 94.09mph | 2:00.19.0 |
| 6.0 | Hans-Otto Butenuth | BMW | 93.54mph | 2:01.01.8 |
| 7.0 | Steve Spencer | Norton | 93.18mph | 2:01.29.2 |
| 8.0 | Tommy Robb | Honda | 92.26mph | 2:02.42.0 |
| 9.0 | John Cooper | Honda | 91.32mph | 2:03.57.6 |
| 10.0 | Pat Mahoney | Norton | 89.77mph | 2:06.06.0 |
Question:
What is the average speed of rider Peter Williams?
Answer:
97.69mph