a) SP continuum images observed on 5 and 7 Jan. in the region indicated by the dashed boxes in Fig. 1, b) total circular polarization (TCP, ) integrated over ±500 mÅ around the line center of 6301.5 Å line, c) Stokes V signals V/I_cq at −280 mÅ from the line center of the 6301.5 Å line, d) Stokes V signals V/I_cq at +280 mÅ from the line center of the 6301.5 Å line, and e) net circular polarization (NCP, ^∫Vdλ/I_c, in the unit of mÅ) integrated over ±500 mÅ around the line center of the 6301.5 Å line, where I_cq is the continuum intensity averaged in the quiet Sun and I_c is the local continuum intensity. The contours in each panel represent V/I_cq = −0.015 at +280 mÅ from 6301.5 Å. The dotted box in panel a) indicates the region of interest used in Fig. 5.