Power spectrum monopole and quadrupole measurements of the four DESI tracers, for the same samples as in Figure 7. The BGS, LRG, ELG and QSO samples are shown in blue, green, orange and red, respectively, with the power spectrum monopole in the upper panels, and quadrupole in the lower panels. The solid lines and the points with error bars show the measurements from UCHUU and the One-Percent Survey data, respectively. Error bars represent the 1σ scatter between the 102 mocks.