Multi-wavelength variability of 1ES 0033+595 in different periods. The daily bins are used for the XRT, MAXI, UVOT, and R-band data, while a two-weekly integration is used for constructing light curves from the BAT and LAT observations. In the BAT and MAXI-band plots, the black and grey points correspond to the detections with the 5σ and (3–4)σ significances, respectively. The grey triangles in the LAT-related plots show the 2σ upper limits to the 0.3–300 GeV flux when the source was detected below the 3σ significance and/or showed N_pred < 8.