CREATE TABLE table_73667 ("Circuit" TEXT, "Difficulty" TEXT, "Turns" FLOAT, "Direction" TEXT, "Setting" TEXT, "Conditions" TEXT, "Unlock Order" FLOAT, "Unlocks" TEXT, "Unlocked by" TEXT)

What is the lowest unlock order for the athens circuit?
SELECT MIN("Unlock Order") FROM table_73667 WHERE "Circuit" = 'Athens'
SELECT MIN("Unlock Order") FROM "table_73667" WHERE "Circuit" = 'Athens'