Our mission is to provide ground-based geomagnetic observations
and data products of the highest quality.

  The BCMT operates the French National Magnetic Observatory, located in 
  Chambon-la-Forêt (Loiret, France), a network of 18 overseas observatories 
  and a network of 11 repeat stations in metropolitan France.
  
  You will find on this site all the data collected (raw magnetic measurements 
  as well as various data products derived from these measurements).