Left panel: peak main beam brightness temperature of (1,1), for the narrow component in the cores, shells-1, and shells-2. Shell-1 and shell-2 are defined as two consecutive shells of width equal to one beam around the respective coherent cores. Right panel: same variance, but for the broad component. We note that as we do not consider the two-component fit to shell-1of SR3 (see Sect. 5.5), the values for the core and shell-2 are connected by a dashed line.