Fig. 10. The effect of a depth-dependent azimuth on the irreducible source vector components . The depth-dependence of is given by Eq. (80). Same display and same atmospheric parameters as in Fig. 5. Magnetic field strength parameter . The numbers near the curves are the values of . Compare this figure with the corresponding case of depth-independent azimuth shown in Fig. 7. Notice that the symmetries of with respect to are broken by the depth-dependence of .