Assessment of Cascading Accidents of Frostbite, Fire, and Explosion Caused by Liquefied Natural Gas Leakage

Table 4

Classification of atmospheric stability.

Wind speed (m/s)	Daylight			Clouds at night	Clouds at night
	Strong	Medium	Weak	>50%	<50%
<2	A	A∼B	B	E	F
2∼3	A∼B	B	C	E	E
3∼4	B	B∼C	C	D	E
4∼6	C	C∼D	D	D	D
>6	C	D	D	D	D