Table 3. Repeatability and Reproducibility of Relative Peak Intensity at m/z 371.

	repeatability			reproducibility
theoretical m/z	average relative intensity (%)	SD (%)	RSD (%)	average relative intensity (%)	SD (%)	RSD (%)
371.0409	20.49	0.17	0.84	25.15	3.89	15.45
371.0620	80.02	4.15	5.18	83.82	6.17	7.36
371.0984	100	0	0	100.00	0.00	0.00
371.1348	52.61	0.48	0.91	51.58	5.23	10.14