...$6\%$

The difference is $3\%$ for A1413 (Arnaud et al. 2005), a cluster for which the temperature profiles measured up to R₅₀₀ with both XMM-Newton and Chandra are in excellent agreement (Vikhlinin et al. 2005; Pratt & Arnaud 2002). In the simulations of Nagai et al. (2007a), the [0.15- 0.5] R₅₀₀ temperature is $6\%$ higher than that in [0.15-1] R₅₀₀. A smaller difference is expected for the aperture used here.

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