For the J = 6 → 5 transition (a) shows the excitation temperature of ¹²CO, which is assumed to be equal to that of ¹³CO and (b) shows the column density of ¹³CO. The asterisk represents Her 36, which is the central position (Δα = 0, Δ δ = 0) at RA(J2000) = 18^h03^m40.3^s and Dec(J2000) = −24°22′43′′. The contour levels are 10% to 100% in steps of 10% of the corresponding peak emissions. All maps are plotted using original beam sizes shown in the lower left of each map.