Trends of activity indices and reconstructed magnetic field geometry with age. From the top: logR′_HK, average magnetic field strength, poloidal fraction of the total energy, dipolar fraction of the poloidal energy, and axisymmetric fraction of the total energy. Properties measured for the same star but at different epochs are connected by a solid line. Our measurements are represented by ‘X’ and measurements by Folsom et al. (2016, 2018, and references therein) and Bellotti et al. (2025) are indicated with circles. The solar values from the work of Egeland (2017) and Vidotto et al. (2018) are also included.