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.

• zenith
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp)
• lon
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• source_BestEstimate_down_short_hemisp
• lat

• aqc_GSW2SumSW
• source_BestEstimate_down_short_hemisp
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• aqc_down_short_diffuse_hemisp
• aqc_short_direct_normal
• aqc_down_short_hemisp
• lon
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• aqc_DifSW2GSW
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• lat
• zenith
• aqc_SWupTest
• Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp)