Helicity amplitude (left panel) and energy (right panel) rates per network unit area and respective 1σ errors for all 16 SDO/HMI quiet-Sun regions under study. The dotted blue lines in both panels denote the average helicity energy rate value (3.85 ± 4.79 × 10¹⁵ Mx² cm^-2 s^-1) of all 16 regions and the average energy rate value (2.23 ± 2.53 × 10⁶ erg cm^-2 s^-1) of all regions with positive energy rates. Errors are larger than the obtained average values due to the presence of the seventh region (see text). The dotted red lines denote the average helicity/energy rate value excluding this seventh, outlier, quiet-Sun region, which are finally used in our analysis. The light gray line in the right panel indicates the zero level.