Top row: the left panel displays close-up, filtered images of the coronal structures labelled A and the middle panel displays a time-distance diagram for a cross-cut at the loop apex, with the cross-cut position shown in the left panel. The right panel is the results of the fitting of a loop at the apex and has measured parameters of P = 126 ± 80 s, A = 25 ± 22 km and v = 1.2 ± 1.3 km s^-1. Bottom row: the left panel displays close-up, filtered images of the coronal structures labelled B and the middle panel displays a time-distance diagram taken close to the footpoint, with the cross-cut position shown in the left panel. The right panel is the results of the fitting to the loop. The time-scales are given in seconds from the start of Hi-C observations.