Photospheric lines of Si ii 4128 Å, S ii 4153 Å, S ii 5032 Å and S ii 5454 Å, observed on 2004 September 23 (redshifted one) and on 2005 August 25 (blueshifted one). The fit (thick dashed line) with a convolution of a Gaussian and a rotation profile is superimposed to the observed profiles (thin full line).