CREATE TABLE table_42603 ("Week" FLOAT, "Date" TEXT, "Result" TEXT, "Record" TEXT, "Opponent" TEXT, "Points For" FLOAT, "Points Against" FLOAT, "First Downs" FLOAT, "Attendance" FLOAT)

What is the average First Downs for december 4?
SELECT AVG("First Downs") FROM table_42603 WHERE "Date" = 'december 4'
SELECT AVG("First Downs") FROM "table_42603" WHERE "Date" = 'december 4'