What does the Air Quality Indicator color mean on models with the VOC Sensor?

The Air Quality Indicator displays green for good air quality (low VOC levels), yellow for moderate air quality (moderate VOC levels), and red for poor air quality (elevated VOC levels). This feature is only available on the HPA5200, HPA5250, HPA5300, and HPA5350 Series, which are equipped with VOC Sensors. Upon startup, the indicator may pulse between colors for a few minutes while the unit calibrates before settling on a solid color. (Page 6)