CREATE TABLE table_62950 ("Team" TEXT, "Tries for" FLOAT, "Tries against" FLOAT, "Try diff" TEXT, "Points for" FLOAT, "Points against" FLOAT, "Points diff" TEXT)

Which Tries for has Points against larger than 87, and Tries against smaller than 28, and Points diff of +63?
SELECT AVG("Tries for") FROM table_62950 WHERE "Points against" > '87' AND "Tries against" < '28' AND "Points diff" = '+63'
SELECT AVG("Tries for") FROM "table_62950" WHERE "Points against" > '87' AND "Points diff" = '+63' AND "Tries against" < '28'