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:
| Game | Date | Opponent | Result | Bills points | Opponents | Bills first downs | Record | Attendance |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Sept. 16 | Oakland Raiders | Win | 21.0 | 20.0 | 22.0 | 1–0 | 80020.0 |
| 2.0 | Sept. 22 | Miami Dolphins | Loss | 16.0 | 24.0 | 16.0 | 1–1 | 80020.0 |
| 3.0 | Sept. 29 | New York Jets | Win | 16.0 | 12.0 | 17.0 | 2–1 | 76978.0 |
| 4.0 | Oct. 6 | at Green Bay Packers | Win | 27.0 | 7.0 | 22.0 | 3–1 | 56267.0 |
| 5.0 | Oct. 13 | at Baltimore Colts | Win | 27.0 | 14.0 | 15.0 | 4–1 | 40626.0 |
| 6.0 | Oct. 20 | New England Patriots | Win | 30.0 | 28.0 | 19.0 | 5–1 | 78935.0 |
| 7.0 | Oct. 27 | Chicago Bears | Win | 16.0 | 6.0 | 16.0 | 6–1 | 78084.0 |
| 8.0 | Nov. 3 | at New England Patriots | Win | 29.0 | 28.0 | 22.0 | 7–1 | 61279.0 |
| 9.0 | Nov. 10 | Houston Oilers | Loss | 9.0 | 21.0 | 16.0 | 7–2 | 79144.0 |
| 10.0 | Nov. 17 | at Miami Dolphins | Loss | 28.0 | 35.0 | 16.0 | 7–3 | 69313.0 |
| 11.0 | Nov. 24 | at Cleveland Browns | Win | 15.0 | 10.0 | 10.0 | 8–3 | 66504.0 |
| 12.0 | Dec. 1 | Baltimore Colts | Win | 6.0 | 0.0 | 9.0 | 9–3 | 75325.0 |
| 13.0 | Dec. 8 | at New York Jets | Loss | 10.0 | 20.0 | 12.0 | 9–4 | 61091.0 |
Question:
How many opponents did the team play in week 13?
Answer:
1.0