Left: superorbital light curve of LS I +61°303 in 18–60 keV, as observed by INTEGRAL. The red points show the modulated fraction in the 3–30 keV band from Li et al. (2012). Middle and bottom: exposure and significance for the corresponding superorbital phase, respectively. Right: radio flux intensity at 2.25 GHz (top) and spectral index (bottom) as a function of the orbital and superorbital phases.