﹩{S}_{\max }/n﹩ of all orders for various SYSREM iteration numbers. The vertical lines mark the SYSREM iteration number that made the signal strength optimum. The blue circle, yellow asterisk, green diamond, red square, and purple cross are the ﹩{S}_{\max }/n﹩ of the recovered injected signal with sc = [0.2, 0.4, 0.6, 0.8, 1.0], respectively. The number in the white box at the bottom left of each panel represents the order number and the color represents the CCD (blue or red).