Table 5. Daily ACS incidences and corresponding air pressure and temperature before and after landfall of Typhoon Morakot (7–13 August 2009).
| Date | Mar | April | May | June | July | 8/7 | 8/8 | 8/9 | 8/10 | 8/11 | 8/12 | 8/13 | Sep | Oct | Nov | Dec | Jan |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ACS | 5.1 | 6.6 | 8 | 9 | 8.29 | 10 | 9 | 7 | 10 | 9 | 7 | 12 | 8.57 | 9.48 | 10.17 | 10.9 | 8.7 |
| AP* | 1011 | 1008.9 | 1007.2 | 1002.2 | 1002.7 | 992.9 | 977.3 | 971.5 | 983.8 | 995.6 | 1001.9 | 1004.1 | 1003.7 | 1007.4 | 1012.5 | 1015 | 1016.1 |
| T | 20.1 | 22.3 | 26 | 28.2 | 29.8 | 28.32 | 27.83 | 27.68 | 27.22 | 28.23 | 29.71 | 28.8 | 29.5 | 25.5 | 22.5 | 18.1 | 17.3 |
*The overall average of 488 days is 6.48 case/day (95% CI: [6.09, 6.87]), with mean AP 1009.5 (95% CI: [1008.9, 1010.1]) and temperature 23.39 (95% CI: 22.95, 23.82]). For the “hot” week around the impact of Morakot (7–13 August), there were 9.14 incidences per day.