Top panel: comparison of our obtained NSC effective radii with NSCs in literature. The solid black line represents the M_nsc–R_e,nsc scaling relation presented in R. Pechetti et al. (2020), along with the confidence interval. Bottom panel: comparison of volume density of our NSCs with NSCs in literature. The solid black line represents the ρ_5pc,nsc–M_gal scaling relation presented in R. Pechetti et al. (2020), along with confidence interval.