Comparison of the integrated emission of different lines in HIFISTARS for VY CMa and the other four hyper- and super-giants in the project (see Teyssier et al. 2012). For each object, the integrated intensities of the different lines have been normalized to that of its J = 6–5 ¹³CO transition. Horizontal bars and small squares show, respectively, values and upper limits for detected and undetected lines. See Sect. 4.2 for more details.