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 10, 1968 | at Houston Oilers | W 26–21 | 45,083 |
| 2.0 | September 15, 1968 | New York Jets | L 20-19 | 48,871 |
| 3.0 | September 22, 1968 | Denver Broncos | W 34–2 | 45,821 |
| 4.0 | September 28, 1968 | at Miami Dolphins | W 48–3 | 28,501 |
| 5.0 | October 5, 1968 | at Buffalo Bills | W 18–7 | 40,748 |
| 6.0 | October 13, 1968 | Cincinnati Bengals | W 13–3 | 47,096 |
| 7.0 | October 20, 1968 | Oakland Raiders | W 24–10 | 50,015 |
| 8.0 | October 27, 1968 | San Diego Chargers | W 27–20 | 50,344 |
| 9.0 | November 3, 1968 | at Oakland Raiders | L 38–21 | 53,357 |
| 10.0 | November 10, 1968 | at Cincinnati Bengals | W 16-9 | 25,537 |
| 11.0 | November 17, 1968 | Boston Patriots | W 31-17 | 48,271 |
| 12.0 | Bye | Bye | Bye | Bye |
| 13.0 | November 28, 1968 | Houston Oilers | W 24-10 | 48,493 |
| 14.0 | December 8, 1968 | at San Diego Chargers | W 40–3 | 51,174 |
| 15.0 | December 14, 1968 | at Denver Broncos | W 30–7 | 38,463 |
Question:
When did the Chiefs have their first bye?
Answer:
12.0