Bayesian binning (solid lines) and uniform binning (dashed lines) of the T_B power-law slope distributions. The colors indicate the source classes (red: FSRQs, blue: BL Lacs, green: RGs). Top two rows: distributions along the entire jet for both frequencies; Bottom two lines: distributions along the overlap-region of both frequencies. Left column: distribution of s-values. For both frequencies, the bin size is 0.5. Right column: value distribution describing the brightness temperature. For both frequencies, a unit bin size was chosen.