Comparison between the unpublished observed period distribution of an all-sky photometric sample (top panel, red line, same as top panel of Fig. 16) and that predicted by our noiseless sampled bias model of Eq. (7) for different scan-angle harmonics k (purple lines in following panels). See Figs. C.2 and C.3 for ecliptic sky maps and Figs. C.4 and C.5 for spurious-period-folded time series of the most prominent peaks.