Fig. 2.
Median of the total inward leakage over all subjects for different mask-wearing cases. Smoothed curves are the three-point moving average. Shaded areas show minimum and maximum as an indication of variability in total inward leakage for different subjects–the individually measured particle size–dependent TIL can be found in SI Appendix, section 2.I. The first–last bin total leakage values are (i) 53.2 to 2.7%, (ii) 12.5 to 0%, (iii) 20.9 to 1.0%, (iv) 2.3 to 0%, and (v) 76.0 to 4.5%. Inset shows the total inward leakage of the surgical mask and the FFP2 mask without adjustment normalized with the total inward leakage of the adjusted FFP2 mask .