The chart shows principal components 1 vs. 2 of principal component analyses using read length, read quality, alignment rate, alignment ratio, coverage ratio, coverage IQR, required minimum read count, GMO detection for 0.1% and 1.0% per laboratory respectively for the short read data sets (A) and the long read data sets (B), respectively. The important information is the relative distance of a point to any other point; the axes dimensions have no relevance. The individual component proportion is stated in parenthesis in the axes titles.