Optical r-band light curves for the 2012 quiescence data set (left). Original and combined (to 20 s) data sets are plotted in grey and black, respectively. The LSP is computed for the original data set in each epoch (middle) and for the whole data set (right). The 0.2 FAP (80% significance) and the highest, significant peak are indicated by a horizontal dashed line and a vertical red line, respectively.