Total intensity images of five inversion transitions of NH₃ as well as the CH₃OH line toward W51e2. Light colors indicate emission and dark colors absorption. Contours of the NH₃ total intensity are also overplotted in the image: emission is displayed with black contours, representing factors 1, 2, 3, 4,.... of 20 mJy beam^-1 km s^-1; absorption is displayed with white contours, representing factors 1, 5, 9, 13,.... of –50 mJy beam^-1 km s^-1, for each transition, respectively. The images were integrated over the velocity range covering the main hyperfine component for each transition (from 48 km s^-1 to 70 km s^-1). The velocity resolution was smoothed to 0.4 km s^-1 for all transitions. The synthesized beams (019–026) are shown in the bottom left corner of each panel (see Table 1). The images were constructed with 004 pixels for all transitions. The cyan crosses mark the positions of the 0.8 mm continuum peaks identified by Shi et al. (2010a) and corresponding to sources W51e2-E, W51e2-W, and W51e2-NW (from left to right), claimed to be individual high-mass YSOs.