Fig. 3.

The jitter magnitude relative to the mean displacement of the experimentally acquired data from figure 2 is shown here for each focal depth. For each of the 9 speckle realizations, the jitter was computed independently, and the error bars indicate the standard deviation of the jitter magnitude. Since the jitter magnitude is computed relative to the displacement, a high jitter magnitude is expected whenever the displacement magnitude is low, such as late in time.