Fig. 3

Distribution of scans in a month- (A) and weekday-wise (B) analysis. There appears to be a slight increase in cases from April to August. The day-of-week distributions are evenly spread throughout the week with no noteworthy reduction on weekends. Frequencies are normalized to the area-under-curve and month-of-year is corrected for different numbers of days per month (as described in the methods section).