reading each of {TAIL ~ the plurality} of color charts with an image reading device and outputting m number of second reference color image signals corresponding to the first reference color image signals, each of {HEAD ~ the second reference color image signals} consisting of red, green, and blue components having respective levels and represented by BR2k, BG2k, and BB2k 
reading each of { TAIL ~ the plurality } of color charts with an image reading device and outputting m number of second reference color image signals corresponding to the first reference color image signals , each of { HEAD ~ the second reference color image signals } consisting of red , green , and blue components having respective levels and represented by BR2k , BG2k , and BB2k
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH