Inferred SEP injection times (vertical lines) including uncertainties (horizontal bars) plotted over dynamic radio spectrograms observed, from top to bottom, by Parker, Solar Orbiter, STEREO A, and Wind. The radio data have been corrected for light travel time and are therefor shifted back to the Sun. The annotations on top of each vertical line specify the S/C, instrument, species and energy range used to infer the injection time as well as the method (VDA or TSA) for Parker (PSP, purple), Solar Orbiter (SolO, blue), STEREO A (STA, red), BepiColombo (yellow), Wind (green), and Maven (brown).