Fig. 3.

The number of (a) severe asthma and (b) gastroenteritis consultations from the GP in-hours syndromic surveillance system with the extended working day moving average. The seven-day and working day moving averages are also included for comparison. The grey vertical lines indicate public holidays. The red boxes highlight the pre- and post- Monday public holiday dips and peaks in the seven-day and working day moving average and their removal in the extended working day moving average