Applications of magnetic line ratio method to magnetographic observations of large-scale solar magnetic fields

We interpret Measurements of the large-scale magnetic field strength, obtained with the magnetograph of the STOP telescope at the Sayan observatory, in terms of a two-component model. Theoretical magnetic field strength ratios for used spectral lines are calculated. For this purpose, the Stokes-V parameters are derived by solving the radiative transfer equations for four flux tube models. By means of a comparison of experimental data and theoretical data, estimates of the "true values" and the gradients of the magnetic field strength are obtained.