Input radial profiles of hydrogen density n_H (top panel) and temperature kT (bottom panel) for the sample selection from Table 1. These profiles were obtained by fitting the functional forms of density and temperature profiles as defined in Sects. 2.2.1 and 2.2.2 to the profiles given in Vikhlinin et al. (2006) (for galaxy clusters A383, A2029, A1795, and A262), to data from Baldi et al. (2009) (for NGC 4636), and to data from Zhuravleva et al. (2015) (for the Perseus cluster).