Projected temperature measurements (magenta points). (a) The overlaid cyan dashed line represents the prediction from the cosmological simulation (Burns et al. 2010). (b) We selected the measured temperatures of the three relaxed arms (i.e., NW, N and S) from Urban et al. (2014), from 28′ to 70′, and fitted with a power-law. The grey dashed line shows the best-fit curve. All the shaded regions represent the uncertainty at 68% confidence level.