A single trace is output for each g

A single trace is output for each gather (Figure 11). A subsequent stack (using the STACK SFM) of all the AMP_DISTRIBUTION traces gives a single trace containing the normalized amplitude distribution for the data set. The distribution of the amplitudes of all frequency bands of all traces of the first window is output first, followed by the second window, and so on. Figure 11. The stacked normalized amplitude distribution shows the relative distributions of the frequency band amplitudes after normalizing by the threshold. The threshold values are at 100 ms (100 percent of the threshold). The amplitudes are made negative after the threshold values to aid in locating the threshold value. Notice that there is a relatively large number of samples just after the threshold. The number becomes significantly smaller at about 150 percent, which corresponds to an increase in the threshold factors of 50 percent.