Stack-plots for each path, shown in the left hand side of Fig. 1 organised by decreasing angle (top left to bottom right). The stack-plots in the top row correspond to those along great arc paths, and the others correspond to those along straight line paths. The horizontal white line denotes the distance from AR13599 to the limb along the relevant path. For each frame where the wave is visible along the path in question, the distance from the AR of the nearest clicked point to the path is shown in red.