In a study of more than 100 transient events in the solar wind with signatures of bidirectional streaming of suprathermal electrons and ions, helium enrichment, and magnetic cloud configuration, we found that most of them were associated with a near-surface solar explosive event. In this paper we use the position of the near-surface solar activity of this set of interplanetary ejecta as a proxy of the position of the whole solar mass ejection, to compare their positions with the neutral line at the source surface obtained by Hoeksema with a potential field model of the solar magnetosphere. ©1999 American Institute of Physics.