I plotted temperature drift during O3GK(Two weeks) Very stable!

IXV : 23.6 deg.

IXC : 22.2 deg.

IYV : 22.6 deg.

IYC : 22.1 deg.

EXV 24.5 deg.

EXC1F : 21.6 deg.

EXC2F : 22.9 deg.

EYV : 21.9 deg.

EYC1F : 20.2 deg.

EYC2F : 21.1 deg.