Analysis of Window Components Affecting U-Value Using Thermal Transmittance Test Results and Multiple Linear Regression Analysis

Table 3

Glazing material setting and scale variables for multiple linear regression analysis.

Layer number	Single layer	Double layer		Triple layer		Quadruple layer
Variable	GL_LE1	GL_AG1	GL_LE2	GL_AG2	GL_LE3	GL_AG3	GL_LE4
Label	GL_CL1	GL_AIR1	GL_CL2	GL_AIR2	GL_CL3	GL_AIR3	GL_CL4
Material	Glass	Gas	Glass	Gas	Glass	Gas	Glass