The averaged shear-wave speed and the standard deviation (SD) over the three inter-channel measurements for each group using the relative 2-channel TOA method, for the phantom with a gelatine concentration of 7.5%.

The bottom row shows the overall mean speed, the standard deviations of the means of the groups, the standard deviation over all 18 measurements (column two) and the average of the between channel-pair standard deviations (column three).