Top left panel: smoothed and normalized median of the speed profile at Earth (blue line) and Mars (red line). The black dashed line gives the threshold of 95% of the maximum. The colored dashed lines show the respective duration of the curve above this threshold. The broadening of the wave crest for the median speed from Earth to Mars is thus about 17%. The epoch time ranges from −1 d to +3 d. Top right panel: median of IMF magnitude around the stream interface. The marked features show an expansion of ∼47%. The epoch time interval in this case is −0.25 d to +0.5 d. Bottom panel: median profiles of the total perpendicular pressure, given again from −0.25 d to +0.5 d. The expansion rate for this parameter is about 43%.