Temperature ladder evolution for the 15D Gaussian shells in the SAR regime (top) and SMD regime (bottom). In the x-axis is the current iteration. From top to bottom are the temperature ladder evolution, T, the swap acceptance ratio, T_swap, and the SMD. Colours represent each chain, where blue is the coldest (β=1), with temperature increasing towards the red, where the hottest chain is omitted. The vertical dashed black line indicates where the adaptation stops.