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 | TV Time | Attendance |
| --- | --- | --- | --- | --- | --- |
| 1.0 | September 8, 2003 | Tampa Bay Buccaneers | L 17–0 | ABC 9:00pm | 67,772 |
| 2.0 | September 14, 2003 | New England Patriots | L 31–10 | CBS 4:15pm | 67,624 |
| 3.0 | Bye | Bye | Bye | Bye | Bye |
| 4.0 | September 28, 2003 | at Buffalo Bills | W 23–13 | FOX 1:00pm | 73,305 |
| 5.0 | October 5, 2003 | Washington Redskins | W 27–25 | FOX 4:15pm | 67,792 |
| 6.0 | October 12, 2003 | at Dallas Cowboys | L 23–21 | FOX 1:00pm | 63,648 |
| 7.0 | October 19, 2003 | at New York Giants | W 14–10 | FOX 1:00pm | 78,883 |
| 8.0 | October 26, 2003 | New York Jets | W 24–17 | CBS 4:15pm | 67,853 |
| 9.0 | November 2, 2003 | at Atlanta Falcons | W 23–16 | FOX 4:15pm | 70,064 |
| 10.0 | November 10, 2003 | at Green Bay Packers | W 17–14 | ABC 9:00pm | 70,291 |
| 11.0 | November 16, 2003 | New York Giants | W 28–10 | FOX 1:00pm | 67,862 |
| 12.0 | November 23, 2003 | New Orleans Saints | W 33–20 | FOX 1:00pm | 67,802 |
| 13.0 | November 30, 2003 | at Carolina Panthers | W 25–16 | FOX 1:00pm | 72,977 |
| 14.0 | December 7, 2003 | Dallas Cowboys | W 36–10 | FOX 1:00pm | 69,773 |
| 15.0 | December 15, 2003 | at Miami Dolphins | W 34–27 | ABC 9:00pm | 73,780 |
| 16.0 | December 21, 2003 | San Francisco 49ers | L 31–28 (OT) | FOX 4:15pm | 67,866 |
| 17.0 | December 27, 2003 | at Washington Redskins | W 31–7 | ESPN 8:30pm | 76,766 |
Question:
Which week was the December 21, 2003 game?
Answer:
16.0