Eight selected profiles of the Si IV 1393.757 Å (thin histogram line) and 1402.772 Å (thick histogram line) spectral lines where the lines ratio (r) is higher than 2. The data are represented with a histogram line while the Gaussian fit with a continuous line. The horizontal axis is in spectral pixels and the vertical axis in Data numbers. The dashed vertical shows the rest position for both lines. In each panel we show the total intensities line ratio.