CO2 and VOC trend to be less problematic, though my sensor does pick up some 200 PPB VOC sometimes indoors in a relatively new building with adaptive energy sav

CO2 and VOC trend to be less problematic, though my sensor does pick up some 200 PPB VOC sometimes indoors in a relatively new building with adaptive energy saving ventilation system. Outdoors is below 40 PPB or better, near busy street some 120 PPB.