Table 3.

Pearson correlation coefficients (r values) between facial temperatures and $T_{ref}$.

		Forehead							Inner Canthi								Mouth	Face
		${\mathit{T}}_{\mathit{F}\mathit{C}}$	${\mathit{T}}_{\mathit{F}\mathit{T}}$	${\mathit{T}}_{\mathit{F}\mathit{B}}$	${\mathit{T}}_{\mathit{F}\mathit{L}}$	${\mathit{T}}_{\mathit{F}\mathit{R}}$	${\mathit{T}}_{\mathit{F}\mathit{C}\mathit{m}\mathit{a}\mathit{x}}$	${\mathit{T}}_{\mathit{F}\mathit{E}\mathit{m}\mathit{a}\mathit{x}}$	${\overline{\mathit{T}}}_{\mathit{C}\mathit{L}}$	${\overline{\mathit{T}}}_{\mathit{C}\mathit{R}}$	${\overline{\mathit{T}}}_{\mathit{C}}$	${\mathit{T}}_{\mathit{C}\mathit{m}\mathit{a}\mathit{x}1}$	${\mathit{T}}_{\mathit{C}\mathit{L}\mathit{m}\mathit{a}\mathit{x}}$	${\mathit{T}}_{\mathit{C}\mathit{R}\mathit{m}\mathit{a}\mathit{x}}$	${\mathit{T}}_{\mathit{C}\mathit{m}\mathit{a}\mathit{x}2}$	${\mathit{T}}_{\mathit{C}\mathit{E}\mathit{m}\mathit{a}\mathit{x}}$	${\mathit{T}}_{\mathit{M}\mathit{m}\mathit{a}\mathit{x}}$	${\mathit{T}}_{\mathit{m}\mathit{a}\mathit{x}}$
Group 1 [41]	IRT-1	0.46	0.41	0.49	0.47	0.43	0.55	0.63	0.60	0.58	0.63	0.65	0.70	0.71	0.73	0.75	0.60	0.78
	IRT-2	0.46	0.39	0.49	0.46	0.41	0.54	0.62	0.53	0.51	0.56	0.59	0.70	0.69	0.73	0.76	0.60	0.79
Group 2	IRT-1	0.50	0.37	0.52	0.46	0.43	0.56	0.60	0.62	0.61	0.65	0.66	0.74	0.75	0.77	0.79	0.69	0.81
	IRT-2	0.50	0.37	0.53	0.46	0.42	0.57	0.61	0.63	0.56	0.62	0.65	0.73	0.72	0.76	0.80	0.69	0.82

Note: Definitions of these facial temperatures can be found in Figure 2 and our previous paper [41]. The bold font shows the best results (the highest r).