Variation of vertical (left column) and radial outflow (right column) velocities with local (high-pass spatially filtered) temperature fluctuations, obtained by fitting the azimuthal variations of the inferred LOS velocities at τ_c = 0.95, and shown for radial zones 2–5. The vertical velocities show the expected convective signature: the relatively cool component has downflows of up to 1.2 km s^-1, the relatively hot gas upflows of up to − 1.3 km s^-1. Radial velocities are strong in the intra-spines (circles) and weak in the spines (X-symbols), but the hottest spine structures show radial outflows in excess of 3 km s^-1.