Table 5. Repeatability and Reproducibility of FT-ICR MS Intensity-Weighted Average (wa) Molecular Parameters of SRFA^a.

	repeatability			reproducibility
	average value	SD (%)	RSD (%)	average value	SD (%)	RSD (%)
no.	3334	93.39	2.8	3189	285.51	8.95
m/zwa	415.68	3.85	0.92	414.48	10.13	2.44
Cwa	18.83	0.256	1.36	18.80	0.54	2.87
Hwa	18.13	0.45	2.49	17.90	0.82	4.60
Owa	10.62	0.04	0.33	10.59	0.24	2.22
Nwa	0.05	0.001	2.73	0.06	0.004	6.35
Swa	0.02	0.007	28.88	0.02	0.01	38.68
O/Cwa	0.57	0.01	1.04	0.57	0.01	1.82
H/Cwa	1.02	0.01	1.02	1.01	0.02	2.35
DBEwa	10.3	0.03	0.32	10.38	0.29	2.79
AImod,wa	0.37	0.01	1.54	0.37	0.01	3.64

^aNo.: number of assigned formulae; O/C: oxygen to carbon ratio; H/C: hydrogen to carbon ratio; DBE: double bond equivalents; AI_mod: modified aromaticity index.