Var	Description		Positions	Length	Type
mpg	Miles/(US) gallon	1-4		4	Num
cyl	Number of cylinders	5		1	Num
disp	Displacement (cu.in.)	6-10		5	Num
hp	Gross horsepower	11-13		3	Num
drat	Rear axle ratio		14-17		4	Num
wt	Weight (1000 lbs)	18-22		5	Num
qsec	1/4 mile time		23-27		5	Num
vs	Engine (0 = V-shaped, 	28		1	Num
	1 = straight)
am	Transmission (0 = 	29		1	Num
	automatic, 1 = manual)
gear	Number of forward gears	30		1	Num
carb	Number of carburetors	31		1	Num