Giant AwakeI can confirm.
Inside 25°
Window inside 26°
Window behind closed Rolladen and Rolladen inner side 40° (currently cloudy)
Rolladen outside 42,5°
Outside (shadow) 32°
thomasaull@giant_awake I think you need to leave the rolläden a bit open (like 10cm or so) so the window frame does not heat up too much and apparently it’s keeping the inside cooler also
@giant_awake a crap just saw that’s exactely what was mentioned in the linked post 😄