On the Space Leader Evolution During the Breakthrough Phase of Attachment Process in Positive Laboratory Sparks

The data supports the manuscript entitled "On the Space Leader Evolution During the Breakthrough Phase of Attachment Process in Positive Laboratory Sparks."  The "Data 1" group contains the discharge current waveform, the normalized gray value, and the synchronized voltage-current-impedance waveform. The files in "Data 1" group can be opened by Excel. The "Data 2" group includes high-speed video frames for five discharge events and they can be opened by Phantom Camera Control (PCC) software. The data can be used freely for scientific purposes with appropriate citation.