Top row: Si IV 1394 Å intensity maps at three different positions within the line profile for the raster beginning at 14:52 on 1 April 2016. The LOS velocities corresponding to the specific line positions are indicated in the top left of each panel. Middle row: Si IV 1394 Å spectra for the spatial positions indicated by the crosses in the top row. Bottom row: same as the middle row but for the O IV 1401 Å line. Average spectra from the sunspot umbra, calculated from the boxes in the bottom left of the images in the top row, are overplotted as dashed lines. The vertical lines indicate the rest velocity of the lines and a LOS velocity of 64 km s⁻¹ (matching the line position plotted in the top right panel). The dashed blue lines on the right hand panels of the bottom two rows plot the double Gaussian fits for this pixel. As previously reported in Table 1, no clear evidence of a secondary emission peak is found in the O IV 1401 Å line at this location.