XIS-0 (top panel; in 0.2–12 keV range), PIN (second panel; in 10–70 keV range), and GSO (bottom panel; in 40–600 keV range) pulse profiles, obtained from the corresponding light curves by using the estimated 41.4106 s pulse period of EXO 2030+375. The errors in the figure are estimated for the 1σ confidence level. Two pulses are shown for clarity.