Long-term light curves of Mrk 501 obtained from the radio to the TeVs between December 14, 2012, and April 18, 2018. From top to bottom: FACT (E_Th ∼ 750 GeV) nightly binning, Fermi-LAT (1−300 GeV) one-week binning, Swift/BAT (15−50 keV) two-day binning, Swift/XRT (2−10 keV), Swift/XRT (0.3−2 keV), and UM2 Swift/UVOT V-band optical observations, and radio observations at 15 GHz. Flux measurement errors are denoted as vertical grey bars. Points with a signal-to-noise ratio lower than 2 are plotted in red (see Sect. 2 for details about the cleaning procedures). For the Fermi-LAT light curve, the 95% flux upper limits (TS < 25) are shown with triangles.