Angular two-point correlation function for three redshift bins z₁, z₂ and z₃ for a flux density threshold of 2 mJy. The lines show the expectations for the cosmological standard model. Both panels use the Halofit option of CAMB SOURCES, which accounts for the non-linear evolution of large scale structure. In the top panel we use the bias function of Eq. (32), whereas we use a piecewise constant bias in the bottom panel. The integral constraint w_Ω is computed for the expectations and subtracted from them. Positive values are shown with full symbols and solid lines, whereas negative values are shown with open symbols and dashed lines.