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About WMO Code Table 4300

Code Table 4300: Horizontal visibility

Code Figure Meaning
0 Less than 50 m
1 50 - 200 m
2 200 - 500 m
3 500 - 1000 m
4 1 - 2 km
5 2 - 4 km
6 4 - 10 km
7 10 - 20 km
8 20 - 50 km
9 50 km or more