Raw (top panel, black points) stacked light curves at 6.58 μm based on all nine available data sets that contain this wavelength channel are fitted with a model (red line) including the eclipse depth, the Spitzer ramp, and the sawtooth correction. In the middle panel, the light curve (black points) has been corrected for the systematic effects, with the best-fit eclipse model shown with the red line. The bottom panel is similar, but here the corrected light curve is binned, each bin with length of 0.0005 in units of phase (1.6 minutes, or ~10 data points). The vertical axis is rescaled to emphasize the eclipse, which is clearly visible in the binned light curve. We exclude the intensity measurements with orbital phases below 0.47 and above 0.54, as discussed in Section 3.2.2.