SGP/SIRS - SIRS E16 April 1999  (SERI-QC Results)

Data quality for this site is very good this month. Just under 100%                        
                                                                           - of the 
daytime data are present.  Passing or low-level flags are assigned to 95.4% of the present 
daytime data. On the mornings of the 5th and 6th low-level flags indicate that the DS is 
too low or the DD or NIP too high by the three-component test. The DS and DD were forced 
below daytime empirical limits by heavily overcast skies on the afternoon of the 13th, and 
again on the 24th. The NIP also went below empirical limits for a few minutes shortly 
after noon on the 13th.The DD filed is filled with "-99999" missing data for 43 minutes on 
the morning of the 21st. At 537 GMT on the 18th the UIR increases to nearly twice normal 
nighttime levels and becomes quite noisy. The signal does not recover by the end of the 
month. No problems were observed in the DIR or US signals.

• base time in epoch(base_time)
• Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
  Deviation(down_long_hemisp_std)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(down_long_hemisp_max)
• Shortwave direct normal irradiance, pyrheliometer, minima(short_direct_normal_min)
• Upwelling Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Pyrgeometer, Minima(down_short_diffuse_hemisp_min)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer, Minima(down_long_hemisp_min)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Minima(down_short_hemisp_min)
• lon(lon)
• Downwelling longwave hemispheric irradiance, pyrgeometer(down_long_hemisp)
• Upwelling shortwave hemispheric irradiance, pyranometer, minima(up_short_hemisp_min)
• North Latitude(lat)
• 25 meter Upwelling Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
  Standard Deviation(up_short_hemisp_std)
• Downwelling shortwave hemispheric irradiance, pyranometer, maxima(down_short_hemisp_max)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
  Deviation(down_short_hemisp_std)
• Time offset from base_time(time_offset)
• 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
  Standard Deviation(up_long_hemisp_std)
• Upwelling longwave hemispheric irradiance, pyrgeometer, maxima(up_long_hemisp_max)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Pyranometer, Standard
  Deviation(down_short_diffuse_hemisp_std)
• -180.0 - +180.0(alt)
• Downwelling shortwave diffuse hemispheric irradiance, pyranometer, maxima(down_short_diffuse_hemisp_max)
• Battery voltage(vBatt)

• Shaded pyranometer voltage(short_diffuse)
• 25 meter Upwelling Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Downwelling longwave hemispheric irradiance, pyrgeometer(down_long_hemisp)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• Up-welling pyrgeometer case thermistor resistance(up_long_case_resist)
• Up-welling pyrgeometer dome thermistor resistance(up_long_dome_resist)
• base time in epoch(base_time)
• Direct-beam normal solar irradiance(nip)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• lon(lon)
• Time offset from base_time(time_offset)
• Down-welling pyrgeometer case thermistor resistance(down_long_case_resist)
• Down-welling pyrgeometer dome thermistor resistance(down_long_dome_resist)