Mid-transit velocity shift of the strong (red) component of the helium 1083 nm line as a function of the equivalent width (EW), normalized by the escape velocity at the planet’s surface. The points marked by squares indicate the scaling value 1.0, which was used for the previous analysis in this paper. When the density is increased, the mass-loss rate of the planet also increases, leading to a larger equivalent width and a higher blue shift in the helium line.