CREATE TABLE table_24605 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Location" TEXT, "Final Score" TEXT, "Attendance" FLOAT, "Record" TEXT)

What was the location for when the opponent was @ roughriders?
SELECT "Location" FROM table_24605 WHERE "Opponent" = '@ Roughriders'
SELECT "Location" FROM "table_24605" WHERE "Opponent" = '@ Roughriders'