32. Mean daily AOD threshold excursions The average 9-day evacuation window had 1.7 days on which mean AOD was over the risk threshold for sensitive populations, with a max- imum of five days (Table 2). The average number of days over the risk threshold for the general population was 0.7 days, with a maximum of three days. When we considered the AOD (1 %CM) time series. the average number of days over the thresholds for sensitive and gener- al populations were 3.1 and 2.0, respectively, with corresponding maximums of eight and seven days. Regarding whether the mean post-evacuation aerosol exceeded a risk threshold, 8 and 21 of the 41 cases exceeded at least the threshold for sensitive populations for AOD and AOD (1 %CM) respectively. Of those cases, 3 and 9 cases also exceeded the threshold for general populations respectively. Scaling with the cloud mask to compensate for the possible misclassification of AOD is a more conservative approach.