CREATE TABLE table_14941 ("Name" TEXT, "Years" TEXT, "Gender" TEXT, "Area" TEXT, "Authority" TEXT, "Decile" FLOAT, "Roll" FLOAT)

What is the lowest decile that Ohau School has?
SELECT MIN("Decile") FROM table_14941 WHERE "Name" = 'ohau school'
SELECT MIN("Decile") FROM "table_14941" WHERE "Name" = 'ohau school'