Hi,
A while ago, someone posted some stats of using a CO2 monitor in a classroom and the increase in CO2 levels during the lesson/day.
I can't find the specific post - if it was yours, please can you remind me what they were.
Other data also welcome.
Thanks,
Might be this thread you are after? https://www.ukhillwalking.com/forums/off_belay/schools_going_back-731819?v=1#x...
Thank you - yes, it was Marsbar's post on there I was thinking of.
