Average line bisectors (in m s⁻¹) for the same three lines whose span is plotted vs. 〈∣B∣〉 in Figure 8. The active and quiet bisectors for Ti II 655.959 nm in the middle panel are almost identical and overlapping at this scale. Only the spans of the bisectors are meaningful here; the zero-point on the X-axis is affected by imprecision in the rest wavelengths of the lines. The ±1σ uncertainties on the difference in bisector span (quiet minus active) are listed in Table 1 and are 0.7, 1.2, and 5.1 m s⁻¹ from the top to bottom panels. Lines in the top and bottom panels exhibit a statistically significant change in bisector span from quiet to active phases.