IONOLAB ionospheric maps are also available in IONEX format. IONEX standard is used to represent the vertical TEC values over a regular grid in readable ASCII format and exchange ionospheric information among the Space Weather community.

More information on IONEX format can be found here: http://ftp.aiub.unibe.ch/ionex/draft/ionex11.pdf

The following table shows the recently generated IONEX files that the user can freely download.