WMO CODE TABLE 4377

4377

VV	Horizontal visibility at surface
V_sV_s

Code figure	km
00	< 0.1
01	0.1
02	0.2
03	0.3
04	0.4
05	0.5
06	0.6
07	0.7
08	0.8
09	0.9
10	1
11	1.1
12	1.2
13	1.3
14	1.4
15	1.5
16	1.6
17	1.7
18	1.8
19	1.9
20	2
21	2.1
22	2.2
23	2.3
24	2.4
25	2.5
26	2.6
27	2.7
28	2.8
29	2.9
30	3
31	3.1
32	3.2
33	3.3
34	3.4
35	3.5
36	3.6
37	3.7
38	3.8
39	3.9
40	4
41	4.1
42	4.2
43	4.3
44	4.4
45	4.5
46	4.6
47	4.7
48	4.8
49	4.9
50	5
51	Not used
52
53
54
55
56	6
57	7
58	8
59	9
60	10
61	11
62	12
63	13
64	14
65	15
66	16
67	17
68	18
69	19
70	20
71	21
72	22
73	23
74	24
75	25
76	26
77	27
78	28
79	29
80	30
81	35
82	40
83	45
84	50
85	55
86	60
87	65
88	70
89	> 70
90	< 0.05
91	0.05
92	0.2
93	0.5
94	1
95	2
96	4
97	10
98	20
99	>= 50