Where is distance to HOME in Log?

ArduCopter Copter 3.4
1

I’m trying to measure my 3DR Radio Telemetry max distance, however, in LOG, I can not find data for “distance to HOME” Or “distance to GCS”. is it not existing, or is it another name?

2

This has been answered in https://github.com/ArduPilot/ardupilot/issues/6237