Estimated net changes of the PaP population compared to the population of PaP on the earthquake day (7-d moving average shown in red).

The earthquake caused a sharp net outflow from PaP. The PaP population then gradually grew until the end of the study period. The wavy shape of the curve is caused by net inflows during working days and corresponding net outflows during weekends. Sharp but temporary increases and decreases in the PaP population occurred during major holidays.