I got the meter because I was getting headaches here and there. I haven't done a proper study, but anecdotally, if I make sure to open the windows and get some

I got the meter because I was getting headaches here and there. I haven't done a proper study, but anecdotally, if I make sure to open the windows and get some fresh air in the mornings before it gets too hot out, I'm usually ok (and the meter reflects that).