SGP/MWR - MWR Scaled sondes too wet

As discussed in P000109.1, two of the MWR scaled radiosondes were 
scaled such that the relative humidity profiles greatly exceeded
100% RH for large fractions of the profile.  The two launches that
were affected were on 991203.0531 and 991204.0530.  In both cases,
the scale factor was on the order of 1.9.  Users should beware of
all MWR scaled radiosondes with scale factors outside the range of
0.8 - 1.2.

Users should individually analyze profiles with scale factors outside
the range of 0.8 - 1.2, before deciding to admit these profiles into
their analysis.

• Relative Humidity (hybrid-b grid)(rh)