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. 2017 Mar 21;7:256. doi: 10.1038/s41598-017-00390-7

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© The Author(s) 2017

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(A) Correlation coefficients calculated based on peak area of original and time-shift alignment chromatograms. (B) Relative area deviation (RD%) vs area. Inserted plot in (A) shows the relationship between original chromatographic areas and those after time-shift alignment. Inserted plot in (B) shows statistical parameter under various RD%. For instance, the marker RD% of 5%, the x axis indicated that 95% peaks with RD% is no more than 5%, and the value in y axis indicate that their area is 97% of the total area. RD% = (Area_aligned − Area_original)/Area_original × 100%.