The data is arranged into 4 folders (.zip files; bold), each of which contains the source files for a figure that can be found the manuscript or the supporting information.

This data and the descriptions below should be read in conjunction with the manuscript and its supporting information, both of which may be found at the following DOI: 10.1063/1.4999636

• Figure 2: *.jpg files for each figure panel. • Figure 3: *.txt files for each panel sorted by wavelengths in nanometers, each angle of incidence (°) is a separate column. • Figure 4: *.txt files for each measurement. • S5-S8: *.txt files for each measurement.