Table 1 Overview of the wHC/(wHC+ wC) ratios for every layer (or set of layers) analyzed with μ-XRPD, MA-tXRPD (transmission), and MA-rXRPD (reflection).

For MA-XRPD, an error of ±2σ is used; for μ-XRPD, a relative uncertainty value of ±10% is cited (see Materials and Methods).

AreaTechniqueLayer(s)wHC/(wHC + wC)
Bright flesh
tones
μ-XRPDUpper (a3)0.65 ± 0.07
Lower (a4)0.79 ± 0.08
Ground (b1)
MA-tXRPDAll layers0.75 ± 0.05
MA-rXRPDSuperficial0.65 ± 0.06
Shadow flesh tonesμ-XRPDUpper (a1)0.48 ± 0.05
Lower (a2)
Ground (b2)0.83 ± 0.08
MA-tXRPDAll layers0.82 ± 0.06
MA-rXRPDSuperficial0.37 ± 0.20
BackgroundMA-tXRPDAll layers0.88 ± 0.04
MA-rXRPDSuperficial0.37 ± 0.20