Energy flux comparison for the three selected surfaces also indicated as background colors: red (first row), green (second row), blue (third row). Left column: energy fluxes calculated using Eqs. (30)–(32): slow (red line), fast (green line), and Alfvén (blue line). Right column: acoustic (orange line) and magnetic (brown line) fluxes, calculated as the first and second terms in Eq. (29), respectively.