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 | Record | Game Site | Attendance |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | September 15, 1963 | New York Giants | L 28–37 | 0–1 | Memorial Stadium | 60029.0 |
| 2.0 | September 22, 1963 | at San Francisco 49ers | W 20–14 | 1–1 | Kezar Stadium | 31006.0 |
| 3.0 | September 29, 1963 | at Green Bay Packers | L 20–31 | 1–2 | Lambeau Field | 42327.0 |
| 4.0 | October 6, 1963 | at Chicago Bears | L 3–10 | 1–3 | Wrigley Field | 48998.0 |
| 5.0 | October 13, 1963 | San Francisco 49ers | W 20–3 | 2–3 | Memorial Stadium | 56962.0 |
| 6.0 | October 20, 1963 | at Detroit Lions | W 25–21 | 3–3 | Tiger Stadium | 51901.0 |
| 7.0 | October 27, 1963 | Green Bay Packers | L 20–34 | 3–4 | Memorial Stadium | 60065.0 |
| 8.0 | November 3, 1963 | Chicago Bears | L 7–17 | 3–5 | Memorial Stadium | 60065.0 |
| 9.0 | November 10, 1963 | Detroit Lions | W 24–21 | 4–5 | Memorial Stadium | 59758.0 |
| 10.0 | November 17, 1963 | at Minnesota Vikings | W 37–34 | 5–5 | Metropolitan Stadium | 33136.0 |
| 11.0 | November 24, 1963 | at Los Angeles Rams | L 16–17 | 5–6 | Los Angeles Memorial Coliseum | 48555.0 |
| 12.0 | December 1, 1963 | at Washington Redskins | W 36–20 | 6–6 | RFK Stadium | 44006.0 |
| 13.0 | December 8, 1963 | Minnesota Vikings | W 41–10 | 7–6 | Memorial Stadium | 54122.0 |
Question:
Name the number  of weeks for san francisco 49ers
Answer:
1.0