If you get this message in TIKI, it means that the file WMM.COF for calculation of magnetic variation is outdated.

Magnetic variation for the whole world is calculated for 5-year periods. The latest version was released in 2014 - and is valid for the years 2015 to 2020.

Right-Click  WMM.COF  to download a new file and select "Save link as..." in the pop-up menu that appears.

The file can be saved temporarily anywhere on your computer, 
but you need to copy it to TIKI's program folder to replace the outdated WMM.COF file.

Click here if you want to know
more about the World Magnetic Model


.