I can tell. I’m thinking there is a lot of individual variance for co2 tolerance. I can feel 800+ ppm and after i have had the sensor a while can tell what the

I can tell. I’m thinking there is a lot of individual variance for co2 tolerance. I can feel 800+ ppm and after i have had the sensor a while can tell what the concentration is within 25% or so without looking. I also feel the cognitive effects, and moreso the positive effects of opening a window. Different places I’ve loved have had significantly different characteristics for what co2 concentration defaults to. I’m guessing a not so small proportion of mental health issues and things like chronic fatigue are actually breathing issues and sensitivity to higher co2 concentrations. For me a big factor is I broke my nose long ago and don’t breathe as well as I should.