Hi,
I have dual Here3 GPS’s on my plane setup. Compasses of GPS show different values with each other. One works as if the other is 180 degrees opposite.
I’m sharing my last flight log, which I also encountred with “Compass variance” error.
https://drive.google.com/drive/folders/10RBjstVa3x_DijpNJHRP3FRu4CcjQQf3?usp=sharing