EPT measurements from the magnet telescope plotted as inverse velocity (assuming that the particles are protons) vs. time. In this representation, ions that are released at the same time but have different velocities lie along a straight line. The upper curve shows “point-and-click” values for protons, the lower for helium nuclei as well as their linear fits. The left-hand y-axis is for protons, the right-hand y-axis for α particles. The changed path length around 18:40 (the “p2” track in Table 1) is also clearly visible.