Table 2 Factors and their levels.

From: Statistical modelling and optimization of thermophysiological and tactile comfort properties of sports socks

Factors/variables

Levels

1

2

3

4

5

Hybrid yarn material

PE/PET

PE/PP

PE/Co

PE/Mo

PE/Vis

Blend ratio

30:70

50:50

70:30

–

–

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