This contains the original simulation data used by the paper 'Where is Region 1 field-aligned current generated?', which will appear in Journal of Geophysical Research - Space Physics. The data were obtained by the global MHD simulation (REPPU) with Level 6. The VTK file (Visualization Tookkit format) contains the physical variables in the magnetosphere at t = 244. 8 min as plasma pressure (P in nPa), velocity vector (V in km/s), current density vector (J in nA/m2), magnetic field vector (B in nT). The VTK file can be opened by Visualization Toolkit, and 3-D visualization software packages "VisIT", and "ParaView". The ASCII files named packet-position-P.txt and packet-position-Q.txt include lists of the position of the packet traced backward in time from the positions P and Q, respectively.