Notation	Name	Description	Status
1	Fog		stable
2	Ice fog		stable
3	Steam fog		stable
7	Mist		stable
8	Haze		stable
9	Smoke		stable
10	Volcanic ash		stable
11	Dust		stable
12	Sand		stable
13	Snow		stable
14	Cloud		stable
15	Precipitation		stable
16	Impossible to determine whether snow is falling or not		stable