Parameters of a Litz wire

Question

What do these numbers tell about the Litz wire parameters?

Answer 1

Litz wire is made up of multiple strands of wire. I assume they meant to use the diameter symbol '⌀' instead of the Greek letter Phi 'ф'. In this case it means that each strand in the conductor has a diameter of 0.1 (presumably in millimeters) and there are 80 of these strands making up the conductor.