condition	mean	min	max
4 h after light	22.294241	21.743634	22.844848
8 h after light	19.0679405	17.72699	20.408891
12 h after light	18.8688845	18.822315	18.915454
4 h after dark	18.2935645	17.131949	19.45518
8 h after dark	22.8024065	22.711994	22.892819
12 h after dark	21.893304	21.893304	21.893304