Final dipole contribution factor D_f/D_i. The black diamonds represent the results of the symmetric bipolar ARs. The purple triangles represent the results of the weakly asymmetric bipolar ARs. The blue squares represent the results of the strongly asymmetric bipolar ARs. The red asterisks represent the results of the complex ARs. The black trend line representing Eq. (1) is fitted to the symmetric bipolar ARs. The black dashed horizontal line marks D_f/D_i = 0.