Compass module XYZ analysis

Hi,
I'm programming a PIC 18L4620 with a compass module AK8963C using Oshonsoft (BASIC)

I have the PIC READing the module and outputting serial DATA. (see txt)

I have programs Magmaster and Magmaster viewer, which both use this DATA to give a calibration calculation and 3D rendering, which are valuable for visualising the DATA.
https://diydrones.com/profiles/blog...oft-iron-magnetometer-calibration-for-dummies

I think Magmaster uses 'twos compliment' DATA and...

Compass module XYZ analysis