Atmospheric System

Part of the life support systems that provides breathable air and comfortable temperature and humidity on a starship. Class-M atmosphere is the standard setting on Federation starships, implying 26°C temperature, 45% relative humidity and 101kPa air pressure with a composition of 78% nitrogen, 21% oxygen and 1% trace gases. Part of the starship volume can be switched to other environmental conditions. Oxygen is produced by photosynthetic processing of CO2.