Violin plot for the correlation coefficient error. The X-axis shows the correlation error, while each violin (colour-coded according to different techniques) is a box plot where the shape represents the probability distribution of the correlation error for the given technique. The black diamond and line are, respectively, the median and mean of the correlation error distribution, while the shaded area represents the interquartile range. The left panel represents the LSTID scenario, while the right one is for MSTID.