. 2019 Jul 26;12(15):2392. doi: 10.3390/ma12152392

Table 4.

Models for the averaged thermal transmittance and linear thermal transmittance: (1)—floor on timber joists, (2)—the self-supporting floor.

	Dependent Variable:
	Averaged Thermal Transmittance		Linear Thermal Transmittance
	(1)	(2)	(1)	(2)
$λ$	0.465 ***	0.221 ***	−2.688 ***	−2.570 ***
$l$	−0.0003 ***	−0.001 ***	−0.001 ***	−0.002 ***
$l^{2}$	0.00002 ***	0.00003 ***	0.0001 ***	0.0002 ***
$w$	−0.001 ***	−0.002 ***	−0.002 ***	−0.002 ***
$f$	−0.002 ***	0.002 ***	−0.014 ***	0.009 ***
$λ \cdot w$	−0.007 ***	-	-	-
$λ \cdot f$	0.041 ***	-	0.224 ***	-
$l \cdot w$	-	-	−0.00002 ***	−0.00003 ***
$l \cdot f$	−0.0001 ***	−0.0001 ***	−0.0004 ***	−0.0005 ***
$l^{2} \cdot f$	0.00000 ***	-	0.00002 ***	-
Constant	0.242 ***	0.263 ***	0.113 ***	0.090 ***
Observations	100	100	100	100
R²	0.999	0.997	0.998	0.995
Adjusted R²	0.999	0.997	0.998	0.995
Residual Std. Error	0.0002	0.0004	0.001	0.002
F Statistic	12,234.860 ***	4919.966 ***	5098.955 ***	2594.745 ***

Note: *** p < 0.01.