HIS measurements about an interplanetary shock encountered by Solar Orbiter on 12 May 2022. Panel (a): HIS E/q spectra at native 30-s resolution over a 2 h interval. Panels (b),(c): E/q-TOF distributions accumulated over 10-min before and after the shock, corresponding respectively to the orange-outlined intervals in panel (a). Panels (d)–(g): E-TOF distributions at the peak E/q step for He²⁺ and other M/q = 2 ions (panels (d),(f)) and for Fe⁹⁺ (panels (e),(g)). The colorbar is consistent throughout all panels. Dark gray indicates E/q steps affected by the instrument’s proton avoidance (panels (a),(c)), magenta corresponds to m/q (panels (b),(c)) and ion species (panels (d)–(g)), dashed blue lines are the velocity filter applied to the data panels (b)–(g), and thick black lines mark boundaries between priority ranges as listed in Table 1 panels (c)–(g)). Suprathermal trails for (left to right in TOF) H¹⁺, He²⁺, and He¹⁺ can be observed in panels (b),(c).