NSA/MWRRET/C1 - Sonde input processing issue

There was a data processing issue with the nsasondewnpnC1.b1 datastream during these 
periods.  As a result, the nsamwrret1liljclouC1.c1 files were sometimes processed without any 
sonde data available as an input to the VAP.  The physical retrievals, phys_lwp and 
phys_pwv, require sounding data and were not calculated for these files.  This also means that 
the be_lwp and be_pwv from these files only contain values from stat2_lwp and stat2_pwv.

null

• 1-sigma uncertainty in precipitable water vapor retrieved using a
  physical/iterative approach(phys_pwv_uncertainty)
• Number of iterations needed by the physical retrieval for convergence(phys_niter)
• Cloud liquid water path retrieved using a physical/iterative approach(phys_lwp)
• Root mean square difference between the computed and observed brightness
  temperatures for the last iteration(phys_rms)
• Convergence value for the physical retrieval(phys_converge)
• 1-sigma uncertainty in cloud liquid water path retrieved using a
  physical/iterative approach(phys_lwp_uncertainty)
• Precipitable water vapor retrieved using a physical/iterative approach(phys_pwv)