#Aranet4 data logger capabilities allows one to simply calculate air changes per hour (ACH) by taking CO₂ decay data and plugging it in to a typical decay rate function.

The local facility manager continues to say these meeting houses are safe, to code and highly energy efficient! I agree only with the latter, 'energy efficient!" 😉

HT: @j_g_allen of Harvard for the equation
#SAFEindoorAir #IAQ #decayrate #CovidCO2 #CO2Warrior