WISRD Research & Engineering Journal

26 Figure 19. The Mark D region is circled in green, and the Mark R region button is circled in red. On the graph in the box to the right find the large drop. Mark 2 points where the drop begins as seen in Figure 20. Click the Mark D region that is circled in green in Figure 19. This marks where the beginning of the event occurs. Mirror the placement on the other side of the event to show the ending of the event. Once both end points are selected use the Mark R region button to create the R region. The graph should look like Figure 21. with a green bar in the beginning of the event and a red bar at the end of the graph.