Stitched 2011 and 2012 MWL light curve of 1ES 1011+496 zoomed into the observation periods from February to April and from January to May. From top to bottom: VHE γ-ray (red circles) and HE γ-ray (orange triangles) data by MAGIC and by Fermi-LAT, observations in X-rays (green squares), UV (gray triangles, stars and circles) and optical U, B and V-bands (gray, cyan and magenta squares) by Swift (XRT and UVOT), in the optical R-band (purple triangles) by the KVA telescope (host galaxy subtracted; Nilsson et al. 2007), optical polarimetry data taken with V + R-filter by the Liverpool telescope (RINGO2) and radio data provided by the OVRO (blue diamonds) and the Metsähovi telescopes (red crosses). Upper limits of 95% confidence level are indicated by downward arrows (see text for details). The light curves are daily binned except HE γ-rays, where a seven and three day binning was applied to the 2011 and 2012 data, respectively. The time axis between 2011 and 2012 observation is discontinuous.