Table 2.

Frequencies with which selected group averages were the largest or smallest within their CEL file

Largest	CCCCC	CCGCC	CCTCC	GGGGG	CTCCC
No. of files	3859	3451	1432	832	160
	GGCGG	4 others	TTTTT	9 others
	132	100	11	23
Smallest	AATTT	GCGCG	AATTA	TTTTA	CGCGA
No. of files	6023	1240	808	546	419
	TTTTT	ATATA	34 others	GGGGG
	181	151	632	4

A total of 10 000 HGU133Plus2 CEL files were examined.