A.
The situation that the water covers on the runway surface with a thickness equals or less than 3 mm (0.118 inches)
B.
The situation that the runway surface is covered by snow, wet snow, dry snow with the equivalent thickness equals or less than 3 mm (0.118 inches) deep
C.
The situation that the runway surface has debris, like sand leaves, etc.
D.
The situation that the runway surface is moisture but without water.