《Table 3 Measured concentration and relative error in 18th, 19th, 21th of May》

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《基于DOAS及统计量的低浓度SO_2测量方法（英文）》

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Proper spectral window selected in the paper is 294~308nm，and optimal sampling points in the window is also acquired by statistics and DOAS.According to Section 1，concentration of SO2 can be calculated by optimal dataset of differential absorption cross section.As shown in Fig.6（b）and Table 3，relative error is less than 1.7%，full scale error is under 1.3%.In many measurement range，relative error can be reduced to 0.8%.Moreover，measurement concentration shows favorable repeatability within 72h.