CREATE TABLE table_19356 ("Team" TEXT, "Average" TEXT, "Points" FLOAT, "Played" FLOAT, "1987-88" TEXT, "1988-89" TEXT, "1989-90" FLOAT)

What is the average for the team with 34 in 88/89?
SELECT "Average" FROM table_19356 WHERE "1988-89" = '34'
SELECT "Average" FROM "table_19356" WHERE "1988-89" = '34'