Characteristics of the global magnetic field topologies of CP stars studied with ZDI as function of stellar temperature and luminosity. The symbol size indicates the field strength. The symbol shape corresponds to the contribution of the dipolar component to the total magnetic field energy (from decagons for purely dipolar fields to pointed stars for non-dipolar field topologies). The symbol colour reflects the contribution of the toroidal magnetic field component (red for purely poloidal geometries, dark blue for field configurations with ≥50% toroidal field contribution). The thickness of the symbol outline indicates stars studied with the full Stokes vector ZDI (thick outline) or using Stokes IV inversions (thin outline). The theoretical stellar evolutionary tracks shown in the figure (Mowlavi et al. 2012) start from the zero-agemain sequence (dashed line). The initial stellar masses are indicated in solar units next to each track. The two stars studied in this paper are identified in the plot.