Evolution of the flare as seen in total EM (top) and EM-weighted temperature (bottom). We note the presence of a SAF above the flare loop system, which can be best seen in the temperature maps (f–h). White arrows highlight the branches of alternating high and low EM values in the SAF. The black region at the apex of the loop arcade (e.g., panel b) is an artefact caused by saturation of one or several AIA channels.