Software to reconstruct slant total electron content (TEC) value in the ionosphere using data derived from global navigation satellite systems such as GPS, GLONASS, etc.


For the moment tec-suite supports:

  • Navigation systems
    • GPS
    • Galileo
    • Compass/BeiDou
    • GEO
  • RINEX versions
    • v2 (2.0 - 2.11)
    • v3 (3.0 - 3.03)
  • File types
    • RINEX observation files
    • Hatanaka-compressed RINEX observation files
    • RINEX navigation files
    • compressed (.Z or .gz) files


You can find the documentation at


Just download and extract tec-suite archive wherever you want.




To decompress Hatanaka-compressed RINEX files, tec-suite uses crx2rnx.


To unarchive .z, .Z or .gz, files tec-suite uses gunzip. If your system is Linux or macOS you probably have it installed. You can find the Windows version at GnuWin site.


  • Edit tecs.cfg
  • Run tecs (or tecs.exe)

For further details see the docs.


Report any bugs via project’s issue tracker. Feel free to fork and play with the code. I will appreciate fixes and suggestions.


Copyright (c) 2018 Ilya Zhivetiev.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see