MADIS NOAA Profiler Network (NPN) Variables with QC
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Code       Name                      Max     Level | Level 1: |         Level 2:          
                                   Possible        |          |                           
                                   QC Level        | Validity |   Internal    Time-Height 
                                                   |          | Consistency   Consistency 
------------------------------------------------------------------------------------------

Integrated Profile
------------------

DD        wind direction             2                  X            X             X
FF        wind speed                 2                  X            X             X
U         u wind component           2                  X            X             X
V         v wind component           2                  X            X             X

Low Mode Levels
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DDL       wind direction             2                  X            X             X
FFL       wind speed                 2                  X            X             X
UL        u wind component           2                  X            X             X
VL        v wind component           2                  X            X             X

High Mode Levels
----------------

DDH       wind direction             2                  X                          X
FFH       wind speed                 2                  X                          X
UH        u wind component           2                  X                          X
VH        v wind component           2                  X                          X


Internal Consistency Checks
---------------------------

  1   Bird contamination check

      (spectral width check on data below 5000 m MSL to locate the
       presence of migrating birds)