• Total Ozone error code⁽¹⁾ = 0-2
• ascending data only
• solar zenith angle < 84°

• Profile ozone error code⁽¹⁾= 0
• ascending data only
  
• solar zenith angle < 84°
• Data Quality Value⁽¹⁾ < 0.15
• N7: No data 15 Mar 1982 - 28 Feb 1983⁽²⁾
• N11: No data 12 Jun 1991 - 31 May 1992⁽³⁾
  

• N7: Minimum of 1080 measurements
• EP: Minimum of 721 measurements
  
• Average latitude of measurements less
  than 0.5° from central band latitude

• Minimum of 21 measurements
• N16: Minimum of 30 measurements in equatorial band (to avoid days when scanning exercises limited normal measurements)
• Average latitude of measurements less
  than 1° from central band latitude
• Average Data Quality Value < 0.12
  

• N7: Minimum of 180 measurements
• EP: No minimum measurements
  
• Corresponding zonal average exists

• No minimum number of measurements
• Corresponding zonal average exists
  

• 20 daily averages per month
• Average weighted by # of daily values
  
• Average time of daily measurements
  within 2.5 days of center of month
  (avoid partial-month sampling issues)

• 15 daily averages per month
• N7: require only 10 daily averages per month to account for on/off instrument cycling during first several years
• Average weighted by # of daily values
  
• Average time of daily measurements
  within 4 days of center of month
  (avoid partial-month sampling issues)

• N7: 20 daily averages per month
• EP: 10 daily averages per month
  
• Average weighted by # of daily values
  
• Corresponding zonal average exists

• No minimum number of daily averages
• Average weighted by # of daily values
  
• Corresponding zonal average exists

• Minimum of 18 (of 20) 5° zonal mean values present for each month. Otherwise monthly value set as missing.

• Minimum of 18 (of 20) 5° zonal mean values present for each month. Otherwise monthly value set as missing.

⁽¹⁾ Quality Control measures within the
      SBUV V8 Algorithm
⁽²⁾ Eruption of El Chichon
⁽³⁾ Eruption of Mount Pinatubo