CREATE TABLE table_54966 ("Tie no" TEXT, "Home team" TEXT, "Score" TEXT, "Away team" TEXT, "Attendance" FLOAT)

What was the attendance for the game that has a tie number of 13?
SELECT SUM("Attendance") FROM table_54966 WHERE "Tie no" = '13'
SELECT SUM("Attendance") FROM "table_54966" WHERE "Tie no" = '13'