CREATE TABLE table_59153 ("Aircraft" TEXT, "1990" FLOAT, "destroyed" FLOAT, "damaged" FLOAT, "to Iran" FLOAT, "survived" FLOAT)

What's the average destroyed with a 1990 over 12, more than 1 damaged, 6 survivors, and a to Iran less than 4?
SELECT AVG("destroyed") FROM table_59153 WHERE "1990" > '12' AND "damaged" > '1' AND "to Iran" < '4' AND "survived" = '6'
SELECT AVG("destroyed") FROM "table_59153" WHERE "1990" > '12' AND "damaged" > '1' AND "survived" = '6' AND "to Iran" < '4'