Top panel: ratio of gas mass to total mass from the X-ray analysis. The gray-shaded region within solid lines is the 1σ interval on the observed gas mass fraction of LCDCS 0504. The blue- and red-shaded regions (the blue one below the red one at large radii) are the average gas mass fractions for cool-core and non-cool-core clusters from Eckert et al. (2013). Bottom panel: ratio of gas mass to total mass, the latter derived from the kinematics analysis. The gray-shaded region within solid lines is the 1σ interval on the observed gas mass fraction of LCDCS 0504. The green-shaded region is the average gas mass fraction for nearby clusters from Biviano & Salucci (2006).