60 second time resolution c/v vs. time plots for electrons observed by SolO STEP, EPT, and HET (top panel) and STEREO STE D1 + D2 and SEPT-ASUN (bottom panel). The color scale represents intensities normalized to maximum intensity in the respective energy channel. Black horizontal lines separate the instruments. Black Points mark the onset times derived with the Possion-CUSUM method. The red dashed line in the bottom panel represents the linear fit for VDA.