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 28, 1958 | at Philadelphia Eagles | W 24-14 | 36853.0 |
| 2.0 | October 4, 1958 | at Chicago Cardinals | L 37-10 | 21824.0 |
| 3.0 | October 12, 1958 | New York Giants | L 21-14 | 30348.0 |
| 4.0 | October 19, 1958 | Green Bay Packers | W 37-21 | 25228.0 |
| 5.0 | October 26, 1958 | at Baltimore Colts | L 35-10 | 54403.0 |
| 6.0 | November 2, 1958 | at Pittsburgh Steelers | L 24-16 | 19525.0 |
| 7.0 | November 9, 1958 | Chicago Cardinals | W 45-31 | 26196.0 |
| 8.0 | November 16, 1958 | Cleveland Browns | L 20-10 | 32372.0 |
| 9.0 | November 23, 1958 | at New York Giants | L 30-0 | 46752.0 |
| 10.0 | November 30, 1958 | at Cleveland Browns | L 21-14 | 33240.0 |
| 11.0 | December 7, 1958 | Pittsburgh Steelers | T 14-14 | 23370.0 |
| 12.0 | December 14, 1958 | Philadelphia Eagles | W 20-0 | 22621.0 |
Question:
In what Week were there less than 30,348 in Attendance with a Result of W 37-21?
Answer:
4.0