CREATE TABLE table_27708484_3 (average_attendance_per_match VARCHAR2, elevation VARCHAR2)

what is the average attendance per match wheree the elevation is 1500 m?
SELECT average_attendance_per_match FROM table_27708484_3 WHERE elevation = "1500 m"
SELECT "average_attendance_per_match" FROM "table_27708484_3" WHERE "1500 m" = "elevation"