Distribution of median GNUSE values. Histograms of median GNUSE values from (A) 11299 HGU133a arrays or (B) 11029 HGU133plus2 arrays. The red vertical line represents the threshold of 1.25 - arrays with a median GNUSE greater than this threshold are considered poor quality. In both cases, this threshold appears to separate the majority of good quality arrays from the long right tail of poor quality arrays.
McCall et al. BMC Bioinformatics 2011 12:137 doi:10.1186/1471-2105-12-137