Fig. 5 | Scientific Data

Fig. 5

From: A Hyperspectral Reflectance Database of Plastic Debris with Different Fractional Abundance in River Systems

Fig. 5

Mean reflectance \(\overline{{\rm{R}}}\) and 75% confidence bound of plastic litter spectra in the clear water along with box plot of plastic fractions for (a) PET, (b) HDPE, (c) LDPE, (d) PP, (e) EPSF, (f) Mixed, and (g) Weathered specimens. The mean reflectance for those samples with plastic fractions greater (\({\overline{{\rm{R}}}}_{50+}\)) and smaller (\({\overline{{\rm{R}}}}_{50-}\)) than 50% of FOV are also shown with vertical lines marking the main absorption lines. The reflectance corresponding to maximum (\({{\rm{R}}}_{\max }\)) and minimum (\({{\rm{R}}}_{\min }\)) plastic fractions are shown with solid and dashed lines, respectively, in pale red. The box plots show the interquartile range around the median with whiskers extending to 1.5 times the interquartile range of plastic fractions.

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