0 0 No precipitation
1 1 Light rain (<0.5 mm/hr)
2 2 Moderate rain (0.5 to 4.0 mm/hr)
3 3 Heavy rain (>4.0 mm/hr)
4 4 Light snow (<0.5 cm/hr)
5 5 Moderate snow (0.5 to 4.0 cm/hr)
6 6 Heavy snow (>4.0 cm/hr)
7 7 Missing value
