Correlation between T_b,lim and T_b,mod(θ_maj/θ_min) expressing the brightness temperature obtained assuming that the characteristic size of the brightest region is determined by the jet transverse dimension as given by the minor axis of the elliptical Gaussian fit. The average T_b,lim is is only 20% higher than the respective corrected values of T_b,mod , and the residual logarithmic distribution of the T_b,lim/T_b,mod ratio (inset) can be approximated by the Gaussian PDF with μ = 0.09 and σ = 0.70.