Figure 9

A graphical representation of retention time adjustment. A target peak (t^mdenoted by ·) to be aligned is moved to new position denoted by (*) after peak alignment. X-axis presents the first retention time and Y-axis presents the second retention time. The dotted grid presents target retention time (t _L ¹ and t _H ¹: the closest target RT1 below and above t^m, t _L ² and t _H ²: the closet target RT2 below and above t^m). The solid grid presents reference retention time (r _L ¹ and r _H ¹: the corresponding reference RT1 aligned to target RT1, r _L ² and r _H ²: the corresponding reference RT2 aligned to target RT2).