Average SED of 1ES 0414 + 009 from the observations reported in Fig. 3 in the epoch 2005–2009. H.E.S.S.: black filled/open circles with/without EBL correction, respectively. Fermi: red full circles correspond to detections with TS > 9, red downward-pointing arrows to 95% upper limits. Swift/BAT in 5 yrs: magenta 99% upper limit. Swift/XRT&UVOT: green open squares (Oct. 2006), blue open triangles (Jan. 2008), and cyan crosses (Feb. 2008). ATOM: black triangle and blue inverted triangles corresponding to two different states, lower flux level in 2008 and higher in 2006, respectively, in the R and I bands. Gray points and butterflies are a collection of archival data from Costamante & Ghisellini (2002) and references therein.