NSA/QCRAD/C1 - Incorrect value of solar zenith angle

A missing lat/lon value in the SKYRAD input file on 8/26/04 led to incorrect calculation 
of solar zenith angle in the 9/2/04 QCRAD file (QCRAD reads in a week of data at a time 
and uses lat/lon from the first file).  

The solar zenith angles in this file are all incorrect.  The radiation data are likely 
fine, but many of the tests on the shortwave fluxes use solar zenith angle and therefore the 
qc and aqc fields may be incorrect and may incorrectly flag the shortwave flux data.  

The longwave data should be unaffected.

• North Latitude(lat)
• Source for field: Best Estimate Global Downwelling Shortwave Hemispheric
  Irradiance(source_BestEstimate_down_short_hemisp)
• 25 meter Upwelling Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Quality check results on field: Best Estimate Global Downwelling Shortwave
  Hemispheric Irradiance(BestEstimate_down_short_hemisp)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• lon(lon)
• Solar ZenithAngle(zenith)

• SWup test(aqc_SWupTest)
• North Latitude(lat)
• DifSW/GSW test(aqc_DifSW2GSW)
• Quality check results on field: Best Estimate Global Downwelling Shortwave
  Hemispheric Irradiance(BestEstimate_down_short_hemisp)
• GSW/SumSW test(aqc_GSW2SumSW)
• Data Quality Check for down_short_hemisp(aqc_down_short_hemisp)
• Quality check results on field: Shortwave Direct Normal Irradiance(aqc_short_direct_normal)
• Source for field: Best Estimate Global Downwelling Shortwave Hemispheric
  Irradiance(source_BestEstimate_down_short_hemisp)
• Solar ZenithAngle(zenith)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
• Data Quality Check for down_short_diffuse_hemisp(aqc_down_short_diffuse_hemisp)
• lon(lon)
• 25 meter Upwelling Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)