CREATE TABLE table_54790 ("Type" TEXT, "Sign" FLOAT, "Exponent" FLOAT, "Significand" FLOAT, "Total bits" FLOAT, "Exponent bias" FLOAT, "Bits precision" FLOAT, "Number of decimal digits" TEXT)

What's the lowest bits precision when the total bits are less than 16?
SELECT MIN("Bits precision") FROM table_54790 WHERE "Total bits" < '16'
SELECT MIN("Bits precision") FROM "table_54790" WHERE "Total bits" < '16'