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Fig. 4

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PCAM spectra before and after spectral correction compared with VNIS spectra. The lines with markers are the PCAM spectra after correction, the dashed lines in (a) are the PCAM spectra before correction, and the lines without markers are the VNIS spectra. (a) Original spectra. (b) Spectra normalized at 555 nm for VNIS and 555.7 nm fo PCAM.

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