Suzaku light curves and hardness ratio of EXO 0748−676 with a time bin size of 128 s (left panels), and those folded on ﹩{P}_{{\rm{orb}}}=13766.8\;{\rm{s}}﹩ with 64 phase bins per period after excluding the bursts (right panels), where phase 0 (=1) refers to 06:12:03 of 2007 December 25. Panels (a) and (a′) show the background-subtracted 0.6−10 keV XIS light curves (averaged between XIS 0 and XIS 3). Panels (b) and (b′) show NXB-subtracted 12−55 keV HXD-PIN light curves, including the CXB contribution by ∼0.02 cts s⁻¹. The HXD-PIN vs. XIS hardness ratios are shown in (c) and (c′).