condition	mean	min	max
4 h after light	4.15037	4.07866	4.257569999999999
8 h after light	4.1569899999999995	4.0963199999999995	4.258830000000001
12 h after light	4.128043333333333	4.04129	4.20761
4 h after dark	4.17909	4.07751	4.36544
8 h after dark	4.102556666666667	3.99591	4.17481
12 h after dark	4.126083333333333	4.01783	4.26882