Fig. 5

Distribution of errors in estimating time and amplitude of the main negative peak. Errors are computed from noisy signals referred to 720 μm of depth for progressively deteriorating SNR. In each boxplot, the central red line is the median value, the edges of the box are the 75th and 25th percentiles, the whiskers extend to the most extreme data points that are not outliers, with outliers being plotted individually by red crosses