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Table 1 Normal angle of the interplanetary shocks analyzed in this study

From: Evolution of the current system during solar wind pressure pulses based on aurora and magnetometer observations

Event Shock arrival UT at ACE Shock arrival UT at WIND Solar wind speed (km/s) SYM-H rise time (min) Time lag MVA Coplanarity
Shock normal angle (X–Y) (deg) Shock normal angle (X-Y) (deg) Shock normal angle (XY-Z) (deg) Med/min eigenvalue ratio Shock normal angle (X-Y) (deg) Shock normal angle (XY-Z) (deg)
1 (June 14, 2005) 17:53:57 17:55:42 500 5 176 186 23 2.95 191 36
2 (July 07, 2012) 17:26:30 17:39:00 520 4 192 189 23 2.98 230 74
3 (April 26, 2004) 15:17:36 16:13:30 520 6 173 169 27 10.15 174 −14
4 (May 30, 2003) 15:55:13 15:52:49 750 2 194 211 3 2.90 155 −64
  1. The event number, the shock arrival UT at ACE and WIND, the solar wind speed behind the shock, the SYM-H rise time, and the normal angles in the azimuthal (X-Y) and longitudinal (XY-Z) planes in the three methods are listed. The azimuthal and longitudinal angles are measured from the GSM +X axis toward the +Y axis and from the GSM +Z axis. The satellite locations are shown in Additional file 1: Figure S1, Additional file 2: Figure S2 and Additional file 4: Figure S4, Additional file 5: Figure S5