group	lib.size	norm.factors	eff.lib.size
S12M	999892	1.00490584572866	1004797.31589732
S13M	999832	1.00294559559737	1002777.10073731
S23M	999910	1.04894582645372	1048851.42132934
S31M	1000007	0.945897750282306	945904.371566558