Kepler SAP fluxes (gray points) after CBV corrections were applied, in relative flux units of ppm, for Quarter 2 (roughly 6% of each dataset). The composite fit (red curve) contains components including planetary phase curve (reflected light and thermal emission), strictly periodic stellar artifacts (ellipsoidal variations, Doppler beaming), and a Gaussian process for stochastic stellar artifacts such as magnetic activity (via a Gaussian process). The fit to the light curves on the left produces residuals which are shown in the histogram on the right.