Vertical profiles of the relative contributions of shocks and CSs to heating via dissipation as a function of height. At each height, we sum either Q_ν (left) or Q_η (right) over a selected subset of the domain (shocks, CSs, or the intersection of both) and compare it to the sum of the same quantity over the whole horizontal extent at that height. Profiles are averaged horizontally in space and over 1 solar hour in time. The vertical dashed line indicates the top of the CZ. Left: Relative contribution to the viscous heating Q_ν, with shocks in dark red and CSs in orange. Right: Relative contribution to the ohmic heating Q_η, with shocks in cyan and CSs in dark blue.