CREATE TABLE table_39361 ("Date" TEXT, "Opponents" TEXT, "H / A" TEXT, "Result F \\u2013 A" TEXT, "Attendance" FLOAT)

How many Attendances on 13 april 1903?
SELECT "Attendance" FROM table_39361 WHERE "Date" = '13 april 1903'
SELECT "Attendance" FROM "table_39361" WHERE "Date" = '13 april 1903'