Label		Description
year		Yearly observation date.
qtr 		Quarterly observation date, end of period.
area_fips 	Combination of 2-digit U.S. state Federal Information Processing Standard(FIPS) code preceding 3-digit U.S. county FIPS code.
low		Lower bound of Debt-to-Income ratio category.
high		Upper bound of Debt-to-Income ratio category.