Initiation of downward positive leader beneath the negative leader channel

The data supports the manuscript entitled "Initiation of downward positive leader beneath the negative leader channel" and MATLAB can open these *.fig and *.mat files. MATLAB Code ReadTdms.m can open these *.tdms. The data of *.cine can be opened by Phantom Camera Control software that can be download from this link: https://www.phantomhighspeed.com/resourcesandsupport/phantomresources/pccsoftware The data can be used freely for scientific purposes with the appropriate citation.