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 | Game site | Record | Attendance |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | September 7, 1963 | Kansas City Chiefs | L 7–59 | University of Denver Stadium | 0–1 | 21115.0 |
| 2.0 | September 14, 1963 | at Houston Oilers | L 14–20 | Jeppesen Stadium | 0–2 | 23147.0 |
| 4.0 | September 29, 1963 | Boston Patriots | W 14–10 | Bears Stadium | 1–2 | 18636.0 |
| 5.0 | October 6, 1963 | San Diego Chargers | W 50–34 | Bears Stadium | 2–2 | 18428.0 |
| 6.0 | October 13, 1963 | Houston Oilers | L 24–33 | Bears Stadium | 2–3 | 24087.0 |
| 7.0 | October 18, 1963 | at Boston Patriots | L 21–40 | Fenway Park | 2–4 | 25418.0 |
| 8.0 | October 26, 1963 | at New York Jets | T 35–35 | Polo Grounds | 2–4–1 | 20377.0 |
| 9.0 | November 3, 1963 | Buffalo Bills | L 28–30 | Bears Stadium | 2–5–1 | 19424.0 |
| 10.0 | November 9, 1963 | at Buffalo Bills | L 17–27 | War Memorial Stadium | 2–6–1 | 30989.0 |
| 11.0 | November 17, 1963 | New York Jets | L 9–14 | Bears Stadium | 2–7–1 | 14247.0 |
| 13.0 | November 28, 1963 | Oakland Raiders | L 10–26 | Bears Stadium | 2–8–1 | 14763.0 |
| 14.0 | December 7, 1963 | at Kansas City Chiefs | L 21–52 | Municipal Stadium | 2–9–1 | 17443.0 |
| 15.0 | December 15, 1963 | at Oakland Raiders | L 31–35 | Frank Youell Field | 2–10–1 | 15223.0 |
Question:
How many attended game(s) against the boston patriots?
Answer:
18636.0