??Magnetised GMT??

[1210tech]

I've been tracking my GMT with Watch Tracker over the last few weeks and have been getting what I think are very erratic results, big troughs & peaks, so I've let it run down over the last few days and reset & rewound last night it to see if the gains & losses level out a bit.
I started a new watch tracker file last night after the reset and have done another check this morning and overnight I have gained 6 seconds. I will continue to keep a track of it this week and see if it does level out although I'm starting to think it might be magnetised?


Readings from the last few weeks



After reset & rewind last night