Class	Mean	Median	Std. err.	Min.	Max.	n
AB	18,260	4,050	60,539	3.40	2,312,000	15,565
BI	21,300	1,206	80,767	0.10	2,147,000	5,529
APD	6,152	4,596	5,717	0.18	102,300	26,108