Spitzer data after the S/N_W3 > 5, but without the cross-match with VAC. The cut was performed in log L_IR/L_agn = −1.1 and two subsamples were created, for Low-z and High-z. The right panel presents the CF distribution for the truncated sample. The black and pink points represent medians for the M_BH cut with MAD errors. The orange and red points represent the medians and MAD errors for the low and high sample with the Eddington ratio exceeding −1.1, while the blue and green points represents the samples with the Eddington ratio below −1.1. The samples are comparable within the errors.