Window Opening Behavior of Residential Buildings during the Transitional Season in China’s Xi’an

Table 3

Division of factors influencing window opening behavior.

Factor	L1	L2	L3	L4	L5
Indoor temperature (°C)	<15	15∼20	20∼25	25∼30	>30
Indoor relative humidity (%)	<40	40∼50	50∼60	60∼70	>70
Indoor CO2 concentration (ppm)	<400	400∼800	800∼1,000	1,000∼1,400	>1,400
Indoor noise (dB)	<40	40∼45	45∼50	50∼60	>60
Outdoor temperature (°C)	<15	15∼20	20∼25	25∼30	>30
Outdoor relative humidity (%)	<40	40∼50	50∼60	60∼70	>70