Slope values of the intrinsic scatter of the temperature (left panel) and electron density (middle panel) measured within ∼0.6R₅₀₀. In the right panel, we show the polytropic index γ (see Eq. (10)) derived for each cluster. Blue points are from maps with S/N = 30 and red points are from maps with S/N = 50. The solid lines represent the median value μ (also reported in red on the top-left corners) while the shaded area includes the 16th and 84th percentiles.