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 | Stadium | Record | Attendance |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | September 10, 1961 | Denver Broncos | L 22–10 | War Memorial Stadium | 0–1 | 16636.0 |
| 2.0 | September 17, 1961 | New York Titans | W 41–31 | War Memorial Stadium | 1–1 | 15584.0 |
| 3.0 | September 23, 1961 | Boston Patriots | L 23–21 | War Memorial Stadium | 1–2 | 21504.0 |
| 4.0 | September 30, 1961 | San Diego Chargers | L 19–11 | War Memorial Stadium | 1–3 | 20742.0 |
| 5.0 | October 8, 1961 | at Houston Oilers | W 22–12 | Jeppesen Stadium | 2–3 | 22761.0 |
| 6.0 | October 15, 1961 | Dallas Texans | W 27–24 | War Memorial Stadium | 3–3 | 20678.0 |
| 7.0 | October 22, 1961 | at Boston Patriots | L 52–21 | Boston University Field | 3–4 | 9398.0 |
| 8.0 | October 29, 1961 | Houston Oilers | L 28–16 | War Memorial Stadium | 3–5 | 21237.0 |
| 9.0 | November 5, 1961 | Oakland Raiders | L 31–22 | War Memorial Stadium | 3–6 | 17027.0 |
| 10.0 | November 12, 1961 | at Dallas Texans | W 30–20 | Cotton Bowl | 4–6 | 15000.0 |
| 11.0 | November 19, 1961 | at Denver Broncos | W 23–10 | Bears Stadium | 5–6 | 7645.0 |
| 12.0 | November 23, 1961 | at New York Titans | L 21–14 | Polo Grounds | 5–7 | 12023.0 |
| 13.0 | December 3, 1961 | at Oakland Raiders | W 26–21 | Candlestick Park | 6–7 | 8011.0 |
Question:
what is the minimum attendance with record being 4–6
Answer:
15000.0