Normalized temperature profiles of 19 relatively symmetric clusters, plotted against radii in (a) arcminutes, (b) megaparsecs, and (c) in units of r₁₈₀. Cooling flow components are removed. Error bars and central temperatures with large uncertainties are not shown for clarity. Also shown for comparison are profiles of nearby AWM 7 (short‐dashed line) and distant A2163 (long‐dashed line), which are not part of the sample. Cluster profiles are quite different in detector units (a), but appear rather similar in physical units (b and especially c). The biggest deviation in panel (c) is A3391, which is still consistent with others within its errors (see Fig. 7 and discussion in § 7.2.4).