Tabular data for the cosmic star formation history in cosmological simulations, and of the relative magnetisation output of stellar activity. For meaning of the models please refer to http://cosmosimfrazza.myfreesites.net/magnetic-models and Vazza et al. 2017 CQG "Simulations of extragalactic magnetic fields and of their observables" http://iopscience.iop.org/article/10.1088/1361-6382/aa8e60 1st column: cosmic time [Gyr]; 2nd: average cosmic star formation rate [Msol/yr/Mpc^3]; 3rd column: magnetic field at the injection (in 83^3 kpc^3), in proper Gauss; 4th column=average magnetic field injected in the cosmic volume [G].