𝒞 versus log₁₀χ. In blue, the results for the 𝒞 parameter computed on the mock Planck-like y-maps. In orange, the results for the 𝒞_{no_noise} parameter computed on the mock y-maps generated without noise contamination (see Section 2.2.1). The blue triangles and the orange points are the mean values of 𝒞 and 𝒞_{no_noise}, respectively, in each bin of log₁₀χ. The shaded areas are at ±1σ. The solid blue line is the best linear fit of equation 𝒞 = (−0.24 ± 0.02) log₁₀χ + (0.63 ± 0.01). The solid orange line is the best linear fit of equation 𝒞_{no_noise} = (−0.29 ± 0.02) log₁₀χ + (0.61 ± 0.01).