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. 2016 Jun 10;6:27790. doi: 10.1038/srep27790

Figure 3. The average spectral reflectance curves of cucumber leaves.

Figure 3

(a) Average spectral curves of cucumber leaves with five ALS disease severities; (b) Subtracted reflectance-differences between these average spectra. Reflectance of healthy samples and samples of four ALS disease severities (n = 40, 39, 39, 37, 39) were averaged respectively, resulting in five curves.