Integrated intensity maps (color bars in units of Jy beam⁻¹ km s⁻¹) of ¹²CN (I(¹²CN J = 1/2–1/2)+I(¹²CN J = 3/2–1/2)) and ¹³CN (I(¹³CN J = 1/2–1/2)+I(¹³CN J = 3/2–1/2)) of NGC 253 (¹²CN and ¹³CN integrated frequency range: 112.960–113.491 and 108.526–108.744 GHz; left), NGC 1068 (¹²CN and ¹³CN integrated frequency range: 112.641–113.169 and 108.170–108.459 GHz; middle), and NGC 4945 (¹²CN and ¹³CN integrated frequency range: 112.809–113.377 and 108.363–108.653 GHz; right). The contour levels are from 20% to 100% with steps of 10% for ¹²CN and ¹³CN of the peak intensity. The ¹²CN peak intensities are 71.9, 35.8, and 26.4 Jy beam⁻¹ km s⁻¹, and the ¹³CN peak intensities are 3.0, 1.1, and 3.2 Jy beam⁻¹ km s⁻¹ in NGC 253, NGC 1068, and NGC 4945, respectively. For the ¹²CN map of NGC 253, see also Meier et al. (2015). The pixel size of each image is 0.3″ × 0.3″. The synthesized beam of each image is shown in the lower left corner.