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. 2020 Sep 11;17(18):6623. doi: 10.3390/ijerph17186623

Table 3.

Correlation between different test results.

Correlation between R2 Value
Breathability Thickness and air resistance 0.45
Water vapor permeability and air resistance 1 0.12
Thermal conductivity and air resistance 0.05
Thermal regulation Thickness and thermal conductivity 0.39
Water vapor permeability and thermal conductivity 1 0.03

1 All masks were tested with changeable filters.