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 7, 1980 | Tampa Bay Buccaneers | L 17–12 | 43211.0 |
| 2.0 | September 14, 1980 | at Miami Dolphins | L 17–16 | 38322.0 |
| 3.0 | September 21, 1980 | Pittsburgh Steelers | W 30–28 | 52490.0 |
| 4.0 | September 28, 1980 | Houston Oilers | L 13–10 | 50413.0 |
| 5.0 | October 5, 1980 | at Green Bay Packers | L 14–9 | 55006.0 |
| 6.0 | October 12, 1980 | at Pittsburgh Steelers | W 17–16 | 53668.0 |
| 7.0 | October 19, 1980 | Minnesota Vikings | W 14–0 | 44487.0 |
| 8.0 | October 26, 1980 | at Houston Oilers | L 23–3 | 49189.0 |
| 9.0 | November 2, 1980 | San Diego Chargers | L 31–14 | 46406.0 |
| 10.0 | November 9, 1980 | at Oakland Raiders | L 28–17 | 44132.0 |
| 11.0 | November 16, 1980 | Buffalo Bills | L 14–0 | 40836.0 |
| 12.0 | November 23, 1980 | at Cleveland Browns | L 31–7 | 79253.0 |
| 13.0 | November 30, 1980 | at Kansas City Chiefs | W 20–6 | 41594.0 |
| 14.0 | December 7, 1980 | Baltimore Colts | W 34–33 | 35651.0 |
| 15.0 | December 14, 1980 | at Chicago Bears | W 17–14 | 48808.0 |
| 16.0 | December 21, 1980 | Cleveland Browns | L 27–24 | 50058.0 |
Question:
What is the week number for the date of September 14, 1980?
Answer:
2.0