Synoptic magnetic field map from the Global Oscillation Network Group (GONG) showing open magnetic field lines connecting to the ecliptic plane. The green lines show the outward and red the inward magnetic fields, respectively. s/c estimated nominal magnetic footpoints along the Parker spiral are indicated by ellipses (STEREO-A in red, STEREO-B in blue and Earth in green). The positions of parent source candidates are marked by gold diamonds: F – flare, J – the small EUV jet, L – brightening loops.