CREATE TABLE table_69284 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

What are the lowest number of points with a Year of 1978, and a Chassis of ensign n177?
SELECT MIN("Points") FROM table_69284 WHERE "Year" = '1978' AND "Chassis" = 'ensign n177'
SELECT MIN("Points") FROM "table_69284" WHERE "Chassis" = 'ensign n177' AND "Year" = '1978'