Diagnostics for convective asymmetry: radial profiles of (a) the volume-percentage filling factor of the inward moving plumes σ_vp, in, and (b) the normalized kinetic energy flux, F_kin, for the red giant simulations bg2D/bg3D. The solid and dashed lines indicate time-averaged radial profiles. Shaded areas indicate one standard deviation above and below these averaged lines. A thin vertical line indicates the convective boundary determined by the Schwarzschild criterion.