Running differences of the DEM maps (ξ(T,x,y,t_i) − ξ(T,x,y,t_i − 1)) for 2–3 MK (top row) and 11–14 MK (bottom row), with white showing an increase in DEM, black a decrease. The leading edge of the erupting plasma was tracked and is indicated by the red horizontal lines The resulting height profiles as a function of time for these and other temperature ranges is shown in Figs. 9 and 10. These maps have been rotated by 110°.