Figure 2. Plots of the matrix R_ij for fully connected (first line), ER (second line) and UCM (third line) networks, where the oscillator i is labeled by the ascending order of frequency ω_i.

The coupling strengths are λ = 1.5, 1.8, 2.12, and 2.14 in (a) – (d) (λ_c = 2.13); λ = 1.5, 1.8, 2.16, and 2.18 in (e) – (h) (λ_c = 2.17); and λ = 1.5, 1.8, 2.20, and 2.22 in (i) – (l) (λ_c = 2.21).