Table 4.

Comparison of $\widehat{{\mathbf{c}}_i}$ and $\widehat{{\mathbf{c}}_i^r}$ to target concentration values for experimental results, for the pixel-based method. Best performance is highlighted in bold.

Experimental set 1, 10% ink and 90% dye
Fig.	# λ	Species	$\widehat{{\mathbf{c}}_i}\hspace{0.17em}[\%]$	$\widehat{{\mathbf{c}}_i^r}\hspace{0.17em}[\%]$	MSE
7(a)	6	Ink	1	4	1.8
7(a)	6	Dye	27	96	1.3
7(c)	126	Ink	17	16	2.8
7(c)	126	Dye	88	84	1.2

Experimental set 2, 70% ink and 30% dye
Fig.	# λ	Species	$\widehat{{\mathbf{c}}_i}\hspace{0.17em}[\%]$	$\widehat{{\mathbf{c}}_i^r}\hspace{0.17em}[\%]$	MSE
7(b)	6	Ink	56	82	1.8
7(b)	6	Dye	12	18	1.0
7(d)	126	Ink	65	61	1.4
7(d)	126	Dye	41	39	2.0