Table 1.

quality measure	6520 (C)a	6520 (P)	6545 (C)	6545 (P)
retention time reproducibility (mean, SD, sec)	−0.32 ± 0.29		0.04 ± 0.22
compounds detected (2 ions)b	1230	1850	2233	5213
percentage of compounds with less than 20% missing values	92.35%	99.35%	97.54%	99.88%
CV (percent of compounds with less than 25% CV)	48.58%	75.27%	75.45%	91.23%
ICC at most probable abundancec	0.356	0.835	0.470	0.854

^aNotes: (C) = centroid mode; (P) = profile mode.

^bCompounds are defined as having at least two coeluting ions (see text for details).

^cMost probable abundance is normalized by setting log₁₀(abundance) = 0, where the number of detected compounds is maximum.