FDM impacts at z = 0: Left panel: ratio of the number of in situ GCs between z = 2 and z = 0 as a function of MW stellar mass at z = 0. Middle panel: total mass of the in situ GC system at z = 0 as a function of MW stellar mass. Right panel: half-mass radius of the in situ GC system at z = 0 as a function of MW stellar mass. Each panel compares our different FDM models (m₂₂ = 0.3, 1.0, 7.0, and 30) to CDM for the 198 MW-like galaxies. Solid lines and their associated shaded regions represent the median and 68% confidence intervals within a moving bin along stellar mass. The confidence intervals are estimated from 1000 bootstrap realizations, each using 95% of the original sample size.