Table 1.

Summary of the average sO${}_2$ relative deviation values. The abundances are estimated using the FCLS algorithm.

Endmember Extraction	Whole Image	Limited to Tumor
GLUP	$24.04\%$	$15.86\%$
VCA	$58.79\%$	$38.96\%$
N-FINDR	$76.81\%$	$51.63\%$
SSM-S	$24.07\%$	$15.29\%$
Theoretical spectra	21.52%	13.33%