AWR/SKYRAD/S1 - Large negative values

Derived down short and downwelling shortwave hemispheric, large negative values.

Remove values before using data

• Quality check results on field: Shortwave direct normal irradiance,
  pyrheliometer, maxima(qc_short_direct_normal_max)
• Quality check results on field: Downwelling shortwave hemispheric irradiance(qc_down_short_hemisp)
• Shortwave direct normal irradiance, pyrheliometer, minima(short_direct_normal_min)
• Quality check results on field: Downwelling shortwave hemispheric irradiance,
  pyranometer, maxima(qc_down_short_hemisp_max)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Downwelling shortwave hemispheric irradiance, pyranometer, maxima(down_short_hemisp_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
  Deviation(down_short_hemisp_std)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
• Quality check results on field: Downwelling shortwave hemispheric irradiance,
  pyranometer, minima(qc_down_short_hemisp_min)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Minima(down_short_hemisp_min)
• Quality check results on field: Shortwave direct normal irradiance,
  pyrheliometer, minima(qc_short_direct_normal_min)
• Quality check results on field: Shortwave Direct Normal Irradiance,
  Pyrheliometer(qc_short_direct_normal)

• Instantaneous Downwelling Hemispheric Shortwave, Pyranometer Thermopile Voltage(inst_global)
• Instantaneous direct normal shortwave irradiance, pyrheliometer thermopile
  voltage(inst_direct_normal)