High-resolution data sample
|
0 |
|
Concept
|
stable
|
Within 20 hPa of surface
|
1 |
|
Concept
|
stable
|
Pressure less than 10 hPa (i.e., 9, 8, 7, etc.) when no other reason applies
|
2 |
|
Concept
|
stable
|
Base pressure level for stability index
|
3 |
|
Concept
|
stable
|
Begin doubtful temperature, height data
|
4 |
|
Concept
|
stable
|
Begin missing data (all elements)
|
5 |
|
Concept
|
stable
|
Begin missing relative humidity data
|
6 |
|
Concept
|
stable
|
Begin missing temperature data
|
7 |
|
Concept
|
stable
|
Highest level reached before balloon descent because of icing or turbulence
|
8 |
|
Concept
|
stable
|
End doubtful temperature, height data
|
9 |
|
Concept
|
stable
|
End missing data (all elements)
|
10 |
|
Concept
|
stable
|
End missing relative humidity data
|
11 |
|
Concept
|
stable
|
End missing temperature data
|
12 |
|
Concept
|
stable
|
Zero degrees Celsius crossing(s) for RADAT
|
13 |
|
Concept
|
stable
|
Standard pressure level
|
14 |
|
Concept
|
stable
|
Operator-added level
|
15 |
|
Concept
|
stable
|
Operator-deleted level
|
16 |
|
Concept
|
stable
|
Balloon re-ascended beyond previous highest ascent level
|
17 |
|
Concept
|
stable
|
Significant relative humidity level
|
18 |
|
Concept
|
stable
|
Relative humidity level selection terminated
|
19 |
|
Concept
|
stable
|
Surface level
|
20 |
|
Concept
|
stable
|
Significant temperature level
|
21 |
|
Concept
|
stable
|
Mandatory temperature level
|
22 |
|
Concept
|
stable
|
Flight termination level
|
23 |
|
Concept
|
stable
|
Tropopause(s)
|
24 |
|
Concept
|
stable
|
Aircraft report
|
25 |
|
Concept
|
stable
|
Interpolated (generated) level
|
26 |
|
Concept
|
stable
|
Mandatory wind level
|
27 |
|
Concept
|
stable
|
Significant wind level
|
28 |
|
Concept
|
stable
|
Maximum wind level
|
29 |
|
Concept
|
stable
|
Incremental wind level (fixed regional)
|
30 |
|
Concept
|
stable
|
Incremental height level (generated)
|
31 |
|
Concept
|
stable
|
Wind termination level
|
32 |
|
Concept
|
stable
|
Pressure 100 to 110 hPa, when no other reason applies
|
33 |
|
Concept
|
stable
|
Freezing level base
|
34 |
|
Concept
|
stable
|
Freezing level top
|
35 |
|
Concept
|
stable
|
Flight level base
|
36 |
|
Concept
|
stable
|
Flight level top
|
37 |
|
Concept
|
stable
|
Significant thermodynamic level (inversion)
|
40 |
|
Concept
|
stable
|
Significant relative humidity level (according to NCDC criteria)
|
41 |
|
Concept
|
stable
|
Significant temperature level (according to NCDC)
|
42 |
|
Concept
|
stable
|
Begin missing wind data
|
43 |
|
Concept
|
stable
|
End missing wind data
|
44 |
|
Concept
|
stable
|
Level of 80-knot isotach above jet
|
60 |
|
Concept
|
stable
|
Level of 80-knot isotach below jet
|
61 |
|
Concept
|
stable
|
Other
|
62 |
|
Concept
|
stable
|
Missing value
|
63 |
|
Concept
|
stable
|