Fabia 1,2 HTP 60hp(44KW) Y2008 alternator voltage range !?

I have noticed that alternator charging voltage goes from 13,7V to 14,4V depending on temperature under the hood.

Is this a feature or mailfunction?

I have researched and find out that alternators on newer cars have temperature compensation.That compensation helps to charge accu according to outside temperature and that feature prevents overcharging during hot days and give high charging voltage when its cold.

Is this it ????

That would answer many questions about charging voltages asked here on this forum.