Maps of the synchrotron emission. Columns correspond to the maps of I, q, u, and polarization position angles (in the IAU convention). The first row correspond to synchrotron emission when the original GMF model is adopted. For the second row, the adopted GMF corresponds to the best-fit obtained from the analysis of dust maps, case B in Sect. 5. In the third row, we present the relative difference of the intensity maps ((I_in − Î)∕(I_in + Î)). For the polarization angles, we display the acute angles between the polarization vectors.