Main observational properties of the representative 29.52″ × 31.70″ subfield selected for in-depth analysis. Continuum intensity (upper-left panel), total linear polarization (L, upper-central panel), net-linear polarization (NLP, upper-right panel), COG magnetogram saturated at  ± 200 G (lower-left panel), total circular polarization (C, lower-central panel), and net-circular polarization (NCP, lower-right panel). The total polarization maps are both saturated at 1 pm, while the net-circular and net-linear polarization maps are saturated at 0.3. Black pixels in L, C, NLP, and NCP maps represent regions with signals below the threshold for inversion. The bars on top represent the color palettes adopted for the two pairs of images below them.