LTT 9779 b transit light-curve fits. Left: order 1 white light curve and examples of 10 spectrophotometric transit light curves (open points) and their best-fitting transit models (solid lines) from the supreme-SPOON reduction. The wavelength extent of each bin is shown above the best-fitting model. Right: residuals to each best-fitting model. The scatter in the residuals in parts per million is noted above each, as well as, in brackets, its multiple above the predicted photon noise level. Histograms of the residuals are shown to the right.