Maps of rotational temperature (top row), CH₃CN column density (second row), offset velocity (third row), linewidth (fourth row), and source size parameter (bottom row) obtained by fitting CH₃CN(12_K − 11_K) K = 0 – 6 and CH₃¹³CN(12_K − 11_K) K = 0 – 3 lines with XCLASS for the remaining three sources (columns) in the CORE survey. The contours correspond to the 1.37 mm continuum as described in Fig. 1. The blue and red arrows correspond to the estimated directions of bipolar blueshifted and redshifted molecular outflows, respectively. The synthesised beam is shown in the bottom left corner and a scale bar in the bottom right corner of each panel.