The dwell times at each level for the Y-aptamers. (a) Kinetic feature extraction associated with analysis of the signal shown in Figure 7 for the Y-aptamer T6-Y10T1-GC. The vertical dotted lines stand in place of the median dwell times. (b) Same analysis for the Y-aptamer bound to the additional T6 appendage, with the disappearance of third level present in the unbound Y-aptamer. Again, the vertical lines stand in place of the median dwell times for each level.