Quiet Sun east limb observation on 2013-02-14 at 09:49 UT. Top images: peak intensity of the 195 Å line (DN), the observed FWHM (Å) of the 192 Å line, and the intensity ratio of the 192 and 195 Å lines. The coordinates are the pixel positions. The arrows indicate two regions, off-limb (OL) and on-disk (OD) chosen for further studies. Lower plots: scatter plots of the FWHM in the 192 and 195 Å lines, as a function of their peak intensity, and the intensity ratio of the 192/195 Å lines. The dashed line indicate the expected value.