Preliminary Breakdown Process of Winter Positive Cloud-to-Ground Lightning Flash and Its relation to the Following First Return Stroke

The file +CG statistics.xlsx contains various statistical parameters for 60 +CG events. The files 3D_UPB.dat, 3D_DPB.dat, 3D_IRPB1.dat, and 3D_IRPB2.dat provide the 3D location results for the four example events discussed in the main text. Each file includes data organized in four lines, representing time (ms), x (m), y (m), and z (m), respectively.