A snapshot at 32.6 min. From left to right: maps of CP, line core intensity, I_LC, normalized to mean quiet Sun continuum, and area asymmetry. The white pixels in the area asymmetry map represent pixels where the maximum amplitude of Stokes V is below 5σ_v. The asterisk symbols in the middle and the right panels represent pixels from which the profiles in Fig. 4 are taken. The red (blue) contour is for the negative (positive) patch. The axes are in pixel scale (scaling: 0.135″ × 0.1875″). A movie of the time series is available online.