Integrated NH₃ intensity from Keown et al. (2019) in K km s⁻¹. The red contours show the Herschel dust emission at 250 µm. In the central map, the grey area indicates the zone not covered by Keown et al. (2019) observations, and the contour is at level 400 MJy sr⁻¹. In the close up views of the region, the contours are at levels of 400, 500, and 600 MJy sr⁻¹ for the Monoceros Ridge and the Extended Ridge; at 400, 500, 1000, and 1500 MJy sr⁻¹ for PL03; at 400, 500, 1000, and 2000 MJy sr⁻¹ for the Shell; at 400, 500, 1000, 2000, and 4000 MJy sr⁻¹ for AFGL 961; and at 600, 800, 1000, 1200, and 1400 MJy sr⁻¹ for the Center. The open squares show the Effelsberg targets with the same colour code as in Fig. 1.