The leverages shown in Fig. , were calculated using the diagonal values of the Hat matrix, 𝐇 in Eq. 6. The script used to plot continuous distributions of leverages in Fig. is levs_hist.py. For varied 𝑘 for A and D-optimal designs (Fig. ) the plotting scripts used were levs_A_var_k.py and levs_D_var_k.py respectively. The raw data files for leverages are publicly available .