CREATE TABLE table_54134 ("Player" TEXT, "Rec." FLOAT, "Yards" FLOAT, "Avg." FLOAT, "TD's" FLOAT, "Long" FLOAT)

How many yards were averaged by the player that had a higher than 13 average with less than 18 long?
SELECT AVG("Yards") FROM table_54134 WHERE "Long" < '18' AND "Avg." > '13'
SELECT AVG("Yards") FROM "table_54134" WHERE "Avg." > '13' AND "Long" < '18'