Example SuperWASP light curve for J22330+093. Top: all three seasons with black dots being the data points at every epoch. The purple circles and corresponding error bars represent the daily-binned points, computed as described in the text. In red we overplot the sinusoid parametrized by the best period from the second season. The best period is at 37.8 d in the second season (HJD ∼5100, middle panels) and agrees well with that in season 3 (37.2 d, HJD ∼5400, bottom panels). The pink dashed line in the light curve denotes the best-fit mean magnitudes, whereas in the periodograms it corresponds to FAP = 0.1%.