Figure 6.

Spectral distributions of correlation coefficients of R_rs(λ) at the bands (see Fig. 5) selected from first- and second-order derivative analyses (see text for details). The bands in the insert indicate the R_rs at those bands was used as the independent variable, respectively, while R_rs at other bands were considered as the dependent variable, a correlation coefficient for linear regression was then obtained for each R_rs pair.