TWP/SONDE/C1 - Surface RH value incorrect

The surface RH value of 77% when the value should have been in the low 60's.  It appears 
the observers did not allow the sonde to equilibrate to ambient conditions before 
collecting the surface data.  This error also caused the dew point to be incorrect.

Replace the surface RH value with a value in the low 60's.  Viewing the raw
   PTU files for values around 1-minute prior to launch should give users an
   idea of the ambient conditions.

• Dewpoint Temperature(dp)
• Relative Humidity (hybrid-b grid)(rh)