Primary transit light curves of WASP-43b as observed with the GROND instrument mounted on the ESO/MPG 2.2 m telescope. In each panel, transit light curves of g′r′i′z′JHK are shown from top to bottom. Left panel shows light curves that are normalized by the reference stars. Middle panel shows baseline-corrected light curves that are binned every 2 min for display purposes (see Sect. 3.1 for baseline correction). Right panels show the best-fit light-curve residuals, also binned every 2 min. Best-fit models for all panels are overlaid in solid or dashed lines.