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:
| Week | Date | Opponent | Result | Attendance |
| --- | --- | --- | --- | --- |
| 1.0 | September 17, 1961 | at Philadelphia Eagles | L 27–20 | 60671.0 |
| 2.0 | September 24, 1961 | St. Louis Cardinals | W 20–17 | 50443.0 |
| 3.0 | October 1, 1961 | Dallas Cowboys | W 25–7 | 43638.0 |
| 4.0 | October 8, 1961 | Washington Redskins | W 31–7 | 46186.0 |
| 5.0 | October 15, 1961 | Green Bay Packers | L 49–17 | 75042.0 |
| 6.0 | October 22, 1961 | at Pittsburgh Steelers | W 30–28 | 29266.0 |
| 7.0 | October 29, 1961 | St. Louis Cardinals | W 21–10 | 26696.0 |
| 8.0 | November 5, 1961 | Pittsburgh Steelers | L 17–13 | 62723.0 |
| 9.0 | November 12, 1961 | at Washington Redskins | W 17–6 | 28975.0 |
| 10.0 | November 19, 1961 | Philadelphia Eagles | W 45–24 | 68399.0 |
| 11.0 | November 26, 1961 | New York Giants | L 37–21 | 80455.0 |
| 12.0 | December 3, 1961 | at Dallas Cowboys | W 38–17 | 23500.0 |
| 13.0 | December 10, 1961 | at Chicago Bears | L 17–14 | 38717.0 |
| 14.0 | December 17, 1961 | at New York Giants | T 7–7 | 61084.0 |
Question:
Which week with Green Bay Packers as an opponent is the highest?
Answer:
5.0