Sun angle radiometric corrections improve data analysis. Separation of major bottom types improves aperture change readjustment and increases correlation for each bottom-type to bathymetry. From scatterplots, it is apparent that there are still important bottom-type distinctions that need to be made. Profiles show good fits for SLAB3 to depth over deep areas. Algae and rubble bottom-types may introduce error.
Profiles are poor in shallow regions.
Look at histograms more closely. Test separation of bottom type based on statistics using normal scores and percentiles as cutoffs. Apply iterative offsets to transects and test if correlation improves. Compare histograms, correlations, and transect lines. Work with Fourier filters more.