Results of white-light curve fitting for KIC 9164561 using different noise models. Left column: GP-M32 model. Middle column: GP-SHO model. Right column: sinusoidal BF model. Top row: white-light curve (black dots), best-fit model (red), and systematic noise (green). Middle row: detrended light curves (black dots) and transit model (red). Bottom row: residuals. The green shaded intervals indicate the 5cr confidence of the GP models. The GP systematics are shifted to match the light-curve baselines. The systematics exhibit positive offsets due to the ILL and ELV effects.