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 | Venue | Attendance | Record |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | September 6, 1968 | at San Diego Chargers | 29–13 L | San Diego Stadium | 33687.0 | 0–1 |
| 2.0 | September 15, 1968 | vs. Denver Broncos | 24–10 W | Nippert Stadium | 25049.0 | 1–1 |
| 3.0 | September 22, 1968 | vs. Buffalo Bills | 34–23 W | Nippert Stadium | 24045.0 | 2–1 |
| 4.0 | September 29, 1968 | vs. San Diego Chargers | 31–10 L | Nippert Stadium | 28642.0 | 2–2 |
| 5.0 | October 6, 1968 | at Denver Broncos | 10–7 L | Mile High Stadium | 41257.0 | 2–3 |
| 6.0 | October 13, 1968 | at Kansas City Chiefs | 13–3 L | Municipal Stadium | 47096.0 | 2–4 |
| 7.0 | October 20, 1968 | vs. Miami Dolphins | 24–22 L | Nippert Stadium | 25942.0 | 2–5 |
| 8.0 | October 27, 1968 | at Oakland Raiders | 31–10 L | Oakland Coliseum | 37083.0 | 2–6 |
| 9.0 | November 3, 1968 | vs. Houston Oilers | 27–17 L | Nippert Stadium | 24012.0 | 2–7 |
| 10.0 | November 10, 1968 | vs. Kansas City Chiefs | 16–9 L | Nippert Stadium | 25537.0 | 2–8 |
| 11.0 | November 17, 1968 | at Miami Dolphins | 38–21 W | Miami Orange Bowl | 31747.0 | 3–8 |
| 12.0 | November 24, 1968 | vs. Oakland Raiders | 34–0 L | Nippert Stadium | 27116.0 | 3–9 |
| 13.0 | December 1, 1968 | at Boston Patriots | 33–14 L | Fenway Park | 17796.0 | 3–10 |
| 14.0 | December 8, 1968 | at New York Jets | 27–14 L | Shea Stadium | 61111.0 | 3–11 |
Question:
What week was the game played at Mile High Stadium?
Answer:
5.0