Reconstructions obtained from linear combinations of the PCs shown in Fig. 7. Panels run from 1 (top-left) to 6 (bottom-right) PCs. The blue dashed line represents H(z) in a flat XCDM cosmological model with w = −0.76 and Ω_m = 0.30 (best-fit results reported by Kessler et al. 2009). Black curve corresponds to the best-fit reconstruction and red lines are 2σ confidence levels.