Continuum intensity (Cont.; panel a), vertical magnetic field strength (B_z; panel b), horizontal magnetic field strength (B_h; panel c), total magnetic field strength (|B|; panel d), inclination angle of the direction of magnetic field to the vertical direction (angle; panel e), and the vertical current density (J_z; panel f) images of the source region, which are in SHARP CEA coordinate and at four moments. The time of images in each column is shown in the first row of them. The red contour in each sub-panel shows the PIL. The orange or blue dashed line in each sub-panel is the slit crossing though the sunspot scar, along which the 1D parameters are shown in Fig. 5. A movie of this figure is available online.