Threequantity peaks of airborne microbes appeared in February, May and August,twopeaks were at 8:00 am and 22:00 pm, two peaks were observed at 8 m and 20mhigh above the ground level.

• 在1昼夜内，2次数量高峰分别出现于上午8时及下午22时； 在距地面8m和20m高度观察到2次高峰。