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Excerpt taken from: WMO No. 386 Manual on the Global Telecommunication System
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| (1) | The designator specified in this table should be used to the greatest extent possible to indicate the level of the data contained within the text of the bulletin. |
| (2) | When data at more than one level are contained in the text, the designator for only one of the levels should be used. |
| (3) | When the table does not contain a suitable designator for the level, a designator which is not assigned in the table should be used. |
T1 |
Level Designator ii |
Depth (in meters) |
D, G, H, J, P, Q, X or Y |
99 |
1000 hPa |
D, G, H, J, P, Q, X or Y
|
98 |
Air priorities for the Earth's surface |
D, G, H, J, P, Q, X or Y |
97 |
Level of the tropopause |
D, G, H, J, P, Q, X or Y
|
96 |
Level of maximum wind |
D, G, H, J, P, Q, X or Y |
95 |
950 hPa |
D, G, H, J, P, Q, X or Y
|
94 |
Level of 0 Degrees C isotherm |
D, G, H, J, P, Q, X or Y |
93 |
975 hPa |
D, G, H, J, P, Q, X or Y
|
92 |
925 hPa |
D, G, H, J, P, Q, X or Y |
91 |
875 hPa |
D, G, H, J, P, Q, X or Y
|
90 |
900 hPa |
D, G, H, J, P, Q, X or Y |
89 |
Any parameter reduced to sea level (eg MSLP) |
D, G, H, J, P, Q, X or Y
|
88 |
Ground or water properties for the Earth's surface (ie snow cover, wave and swell) |
D, G, H, J, P, Q, X or Y |
87 |
1000-500 hPa thickness |
D, G, H, J, P, Q, X or Y
|
86 |
Boundary level |
D, G, H, J, P, Q, X or Y |
85 |
850 hPa |
D, G, H, J, P, Q, X or Y
|
84 |
840 hPa |
D, G, H, J, P, Q, X or Y |
83 |
830 hPa |
D, G, H, J, P, Q, X or Y
|
82 |
825 hPa |
D, G, H, J, P, Q, X or Y |
81 |
810 hPa |
D, G, H, J, P, Q, X or Y
|
80 |
800 hPa |
D, G, H, J, P, Q, X or Y |
79 |
790 hPa |
D, G, H, J, P, Q, X or Y
|
78 |
780 hPa |
D, G, H, J, P, Q, X or Y |
77 |
775 hPa |
D, G, H, J, P, Q, X or Y
|
76 |
760 hPa |
D, G, H, J, P, Q, X or Y |
75 |
750 hPa |
D, G, H, J, P, Q, X or Y
|
74 |
740 hPa |
D, G, H, J, P, Q, X or Y |
73 |
730 hPa |
D, G, H, J, P, Q, X or Y
|
72 |
725 hPa |
D, G, H, J, P, Q, X or Y |
71 |
710 hPa |
D, G, H, J, P, Q, X or Y
|
70 |
700 hPa |
D, G, H, J, P, Q, X or Y |
69 |
690 hPa |
D, G, H, J, P, Q, X or Y
|
68 |
680 hPa |
D, G, H, J, P, Q, X or Y
|
67 |
675 hPa |
D, G, H, J, P, Q, X or Y |
66 |
660 hPa |
D, G, H, J, P, Q, X or Y
|
65 |
650 hPa |
D, G, H, J, P, Q, X or Y |
64 |
640 hPa |
D, G, H, J, P, Q, X or Y
|
63 |
630 hPa |
D, G, H, J, P, Q, X or Y |
62 |
625 hPa |
D, G, H, J, P, Q, X or Y
|
61 |
610 hPa |
D, G, H, J, P, Q, X or Y |
60 |
600 hPa |
D, G, H, J, P, Q, X or Y
|
59 |
590 hPa |
D, G, H, J, P, Q, X or Y |
58 |
580 hPa |
D, G, H, J, P, Q, X or Y
|
57 |
570 hPa |
D, G, H, J, P, Q, X or Y |
56 |
560 hPa |
D, G, H, J, P, Q, X or Y
|
55 |
550 hPa |
D, G, H, J, P, Q, X or Y |
54 |
540 hPa |
D, G, H, J, P, Q, X or Y
|
53 |
530 hPa |
D, G, H, J, P, Q, X or Y |
52 |
520 hPa |
D, G, H, J, P, Q, X or Y
|
51 |
510 hPa |
D, G, H, J, P, Q, X or Y |
50 |
500 hPa |
D, G, H, J, P, Q, X or Y
|
49 |
490 hPa |
D, G, H, J, P, Q, X or Y |
48 |
480 hPa |
D, G, H, J, P, Q, X or Y
|
47 |
470 hPa |
D, G, H, J, P, Q, X or Y |
46 |
460 hPa |
D, G, H, J, P, Q, X or Y
|
45 |
450 hPa |
D, G, H, J, P, Q, X or Y |
44 |
440 hPa |
D, G, H, J, P, Q, X or Y
|
43 |
430 hPa |
D, G, H, J, P, Q, X or Y |
42 |
420 hPa |
D, G, H, J, P, Q, X or Y
|
41 |
410 hPa |
D, G, H, J, P, Q, X or Y |
40 |
400 hPa |
D, G, H, J, P, Q, X or Y
|
39 |
390 hPa |
D, G, H, J, P, Q, X or Y |
38 |
380 hPa |
D, G, H, J, P, Q, X or Y
|
37 |
370 hPa |
D, G, H, J, P, Q, X or Y |
36 |
360 hPa |
D, G, H, J, P, Q, X or Y
|
35 |
350 hPa |
D, G, H, J, P, Q, X or Y |
34 |
340 hPa |
D, G, H, J, P, Q, X or Y
|
33 |
330 hPa |
D, G, H, J, P, Q, X or Y |
32 |
320 hPa |
D, G, H, J, P, Q, X or Y
|
31 |
310 hPa |
D, G, H, J, P, Q, X or Y |
30 |
300 hPa |
D, G, H, J, P, Q, X or Y
|
29 |
290 hPa |
D, G, H, J, P, Q, X or Y |
28 |
280 hPa |
D, G, H, J, P, Q, X or Y
|
27 |
270 hPa |
D, G, H, J, P, Q, X or Y |
26 |
260 hPa |
D, G, H, J, P, Q, X or Y
|
25 |
250 hPa |
D, G, H, J, P, Q, X or Y |
24 |
240 hPa |
D, G, H, J, P, Q, X or Y
|
23 |
230 hPa |
D, G, H, J, P, Q, X or Y |
22 |
220 hPa |
D, G, H, J, P, Q, X or Y
|
21 |
210 hPa |
D, G, H, J, P, Q, X or Y |
20 |
200 hPa |
D, G, H, J, P, Q, X or Y
|
19 |
190 hPa |
D, G, H, J, P, Q, X or Y |
18 |
180 hPa |
D, G, H, J, P, Q, X or Y
|
17 |
170 hPa |
D, G, H, J, P, Q, X or Y |
16 |
160 hPa |
D, G, H, J, P, Q, X or Y
|
15 |
150 hPa |
D, G, H, J, P, Q, X or Y |
14 |
140 hPa |
D, G, H, J, P, Q, X or Y
|
13 |
130 hPa |
D, G, H, J, P, Q, X or Y |
12 |
120 hPa |
D, G, H, J, P, Q, X or Y |
11 |
110 hPa |
D, G, H, J, P, Q, X or Y
|
10 |
100 hPa |
D, G, H, J, P, Q, X or Y |
09 |
090 hPa |
D, G, H, J, P, Q, X or Y
|
08 |
080 hPa |
D, G, H, J, P, Q, X or Y |
07 |
070 hPa |
D, G, H, J, P, Q, X or Y |
06 |
060 hPa |
D, G, H, J, P, Q, X or Y
|
05 |
050 hPa |
D, G, H, J, P, Q, X or Y |
04 |
040 hPa |
D, G, H, J, P, Q, X or Y
|
03 |
030 hPa |
D, G, H, J, P, Q, X or Y |
02 |
020 hPa |
D, G, H, J, P, Q, X or Y
|
01 |
010 hPa |
D, G, H, J, P, Q, X or Y |
00 |
Entire atmosphere (eg precipitable water) |
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