All type III radio bursts plotted together to visualize their propagation path relative to each other. Panel (a) shows the propagation paths of all type III bursts presented in the similar viewing angle as the Events 8 and 9 (Fig. 7). The spread of the sources indicates the rotation of the associated AR. Each bursts is presented in a different color. Panel (b) shows the radio sources of all type III bursts plotted together but now also color coded by the selected frequency pairs.