Angular power spectrum of the dark matter field in the lightcone across different redshifts. Plots show the clustering in the following z-bins: 0.49 < z < 0.51 (top left), 0.99 < z < 1.00 (top right), 2.02 < z < 2.08 (bottom left) and 2.94 < z < 3.06 (bottom right). The clustering in the simulation (symbols) is compared against linear (dashed) and nonlinear (solid) theoretical predictions (Takahashi et al. 2012). Particle shot-noise is also shown for reference (dot-dashed line). Residuals with respect to nonlinear theory are displayed in the lower panels, along with sample variance error envelopes (dotted).