Day-by-the-Hour, as used in a lean accounting system, measures

	A.	total good units completed, divided by the total units completed; measured before any rework is performed.
	B.	availability rate, times efficiency rate, times quality rate.
	C.	the time available divided by the units demanded from customers.
	D.	the number of units demanded per hour compared to the number of units produced; a variance may be calculated. This data might be updated hourly and posted in a manufacturing cell.