Maximum linear () and circular (V = max(|V|)) polarisation signals for the selected nine most Zeeman-sensitive photospheric lines (see legend in the top panel). We use the HSRA atmosphere and vary the field strength from 10 to 1000 G (see abscissas). Upper panel: results when the inclination is 90° (horizontal magnetic field with respect to the solar surface), and lower panel: results for a magnetic field that is parallel to the line of sight, i.e., an inclination of 0°. The azimuth is always equal to 70°.