Observations of Stokes I/ I_c and Q/ I in the region of the (0, 0) bandhead and fits obtained with the FALC atmosphere model and increased anisotropy. The three curves presented in each panel correspond to observations (thick solid) and to the calculations with zero magnetic field (dotted) and with a magnetic field strength of 82 G (thin solid). Note that no differences between the calculated curves are apparent in intensity.