Parameters C and D of eqn (8) for different substances. The absolute average deviation AAD, and absolute average relative deviation AARD of the correlation.

	C × 103 (W m−1 K−2)	D (W m−1 K−1)	AAD (W m−1 K−1)	AARD (%)
OM65	−6.096	2.286	0.003	1.8
RT64H	−3.787	1.491	0.002	1.6
SA	−5.999	2.287	0.002	1.2