Fe xvi double component fits at positions shown in Fig. 9. The two Gaussian components of the fit are marked in green and orange, the total fit by the solid black line, and the data by the stepped black line. Velocities of both components (Vel1: green, Vel2: orange) are derived from a common reference wavelength for each raster. Plots on the top row show the evolution of the enhanced blue wing component at Position 0 during the impulsive phase of the flare. In the other two positions, shown on the bottom row, the enhancement is only prevalent early on in Position 1 and only just noticeable at Position 2.