Evolving global magnetic field properties for ι Hor plotted as a function of the chromospheric S-index and time. Top: Axisymmetry and log B_tot² for the total field. Middle and bottom: Axisymmetry and log B² for the poloidal field and toroidal field components, respectively. The solid red line shows the best two-period model fit to Ca II H&K observations from Amazo-Gómez et al. (2023). Day “0” corresponds to BJD = 2457300.78580. The symbol sizes scale with log B², and symbols for poloidal- and toroidal-dominated fields range from red to blue. The degree of non-axisymmetry is represented by symbol shapes, ranging from circular for a fully axisymmetric field and star-shaped symbols for non-axisymmetry.