Table 1:
Spectral lines used in this study. Lines are given
depending on their forming region: from the upper part to the lower
part of the atmosphere. Line-forming regions have been determined
using the hydrodynamical model defined by
where
is the optical depth at the centre of the line (see Fig. 8). The line depth (in percentage of the
continuum) is indicated.
where
is the optical depth at the centre of the line (see Fig.