Horizontal averages of the volumetric Ohmic (red) and viscous heating (blue) plotted as a height profile, where the line styles (solid and dashed) depict the different FOVs given in brackets in the legend. The dash-dotted lines basically describe the same physical quantity W_Lorentz = u·⁽∇ × B × B⁾/μ, while the Lorentz work (green) and the induction work (orange) are of opposite sign. Due to energy conservation, the sum of all these quantities must be equal to the Poynting flux divergence, e.g. for the SL 1–3 FOV (black dotted).