Snapshots of helicity flux distributions with G_θ maps (left column) and G_Φ maps (right column) at four different times of the evolution of AR 11928. G_Φ is derived from G_θ taking into account the connectivity of the field line footpoints (Eq. (6)). Intense positive helicity flux in G_θ maps is associated with the leading major sunspot polarity, which becomes negative over the time. This flux is redistributed to the following polarity flux by closed field lines in G_Φ maps. In all panels, contours of B_z at ± 120 G (black/white) are overplotted. All maps were scaled with gray levels within ± 1 × 10^-19 Mx² cm^-2 s^-1. Axes units are in arcseconds and the field of view is same as indicated by the black dashed rectangle in Fig. 2a. The rectangular white box in the top left panel refers to the field of view of the panels in Fig. 1.