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 3, 1978 | San Diego Chargers | L 20-24 | Kingdome | 0-1 | 55778.0 |
| 2.0 | September 10, 1978 | at Pittsburgh Steelers | L 10-21 | Three Rivers Stadium | 0-2 | 48277.0 |
| 3.0 | September 17, 1978 | at New York Jets | W 24-17 | Shea Stadium | 1-2 | 46911.0 |
| 4.0 | September 24, 1978 | Detroit Lions | W 28-16 | Kingdome | 2-2 | 60040.0 |
| 5.0 | October 1, 1978 | at Denver Broncos | L 7-28 | Mile High Stadium | 2-3 | 74989.0 |
| 6.0 | October 8, 1978 | Minnesota Vikings | W 29-28 | Kingdome | 3-3 | 62031.0 |
| 7.0 | October 15, 1978 | at Green Bay Packers | L 28-45 | Milwaukee County Stadium | 3-4 | 52712.0 |
| 8.0 | October 22, 1978 | Oakland Raiders | W 27-7 | Kingdome | 4-4 | 62529.0 |
| 9.0 | October 29, 1978 | Denver Broncos | L 17-20 OT | Kingdome | 4-5 | 62948.0 |
| 10.0 | November 5, 1978 | at Chicago Bears | W 31-29 | Soldier Field | 5-5 | 50697.0 |
| 11.0 | November 12, 1978 | Baltimore Colts | L 14-17 | Kingdome | 5-6 | 61905.0 |
| 12.0 | November 19, 1978 | at Kansas City Chiefs | W 13-10 | Arrowhead Stadium | 6-6 | 35252.0 |
| 13.0 | November 26, 1978 | at Oakland Raiders | W 17-16 | Oakland-Alameda County Coliseum | 7-6 | 52978.0 |
| 14.0 | December 3, 1978 | Cleveland Browns | W 47-24 | Kingdome | 8-6 | 62262.0 |
| 15.0 | December 10, 1978 | at San Diego Chargers | L 10-37 | San Diego Stadium | 8-7 | 49975.0 |
Question:
On what day was the team playing at milwaukee county stadium?
Answer:
October 15, 1978