The central data base includes:

• MOZAIC observations from August 1994 to March 2009
  
• Recent MOZAIC observations (April 2009 - December 2011) are not yet validated
  
• IAGOS observations (since October 2011) are not yet validated.
  

MOZAIC observations include:

• geo-localisation (latitude, longitude, pressure),
  
• meteorological observations (temperature, wind speed and direction),
  
• ozone mixing ratio (ppbv)
  
• relative humidity (%)
  
• carbon monoxide mixing ratio (ppbv) from 2002
  
• total nitrogen oxides (NO_y, ppbv) on one aircraft from 2002 to 2005
  

IAGOS observations are the same as MOZAIC ones, except that:

• NO_y observations are replaced by nitrogen oxides (NO_x, ppbv) observations
  
• additionnal measurements come from the backscatter cloud probe (number and size of water droplets).