Table 6: Average results of significant parameters for the selected surfaces and relative classification.

(nm) (%) 20° (%)Δ% Δ% VisibilityPatternAppearanceTech

Cut-off5010−21050
VN2613.07 ± 39.533.33 ± 1.115.15 ± 0.47−0.87 ± 0.01−2.42 ± 0.03Not visiblePlainMattNV
IMD647.14 ± 9.933.71 ± 0.16−5.90 ± 0.0358.27 ± 0.5716.00 ± 8.14VisiblePlainGlossyIMD