Indoor CO2 ppm level measurement in Ladybug Tools

Hi again @chris

I have added an IDF example of @TheodorosGalanos (here) to the additional strings but I am not sure if its the correct method or not to what I am looking for?
And how can I read the indoor CO2 ppm level?

Also, for natural ventilation, if I want the windows to be always open (any percentage), do I need to control it with min/max temperatures? Or Can I leave everything else blank but just input the fraction of window operable?
Can you please guide and correct me to do so? Thanks

I have attached my file

Hardi

Indoor CO2 measurement.gh (690.7 KB)