X-ray profiles scaled by R₅₀₀ from the M₅₀₀ − Y_X,500 relation of Arnaud et al. (2010). From left to right, top to bottom: gas density, gas temperature, gas pressure, integrated mass. Cool core systems are plotted in blue, morphologically disturbed objects in red, and intermediate systems in black. The grey line in the pressure plot is the universal pressure profile of Arnaud et al. (2010).